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[PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
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* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


--LQksG6bCIzRHxTLp
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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


--LQksG6bCIzRHxTLp
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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-12 01:02 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-12 01:02 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--LQksG6bCIzRHxTLp--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


--AhhlLboLdkugWU4S
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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


--AhhlLboLdkugWU4S
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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit
@ 2021-03-15 14:20 Bruce Momjian <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Bruce Momjian @ 2021-03-15 14:20 UTC (permalink / raw)

---
 src/backend/access/gist/README       | 10 ++++++++++
 src/backend/access/gist/gist.c       | 21 +++++++++++++++------
 src/backend/access/gist/gistbuild.c  |  9 ++++++---
 src/backend/access/gist/gistvacuum.c | 18 ++++++++++++------
 4 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/src/backend/access/gist/README b/src/backend/access/gist/README
index 25cab0047b..6b1f84634f 100644
--- a/src/backend/access/gist/README
+++ b/src/backend/access/gist/README
@@ -461,6 +461,16 @@ value. The page is not recycled, until that XID is no longer visible to
 anyone. That's much more conservative than necessary, but let's keep it
 simple.
 
+GiST and Encryption
+-------------------
+
+GiST uses LSNs and NSNs for concurrency.  This means that unlogged and
+temporary relations also need LSNs.  GiST has a mechanism to assign LSNs
+to such relations, but sometimes uses fixed LSNs and or calls
+gistGetFakeLSN(), which can cause duplicate LSNs to be used.  Therefore,
+when encryption is enabled and fake LSNs are needed, the GiST code calls
+LSNForEncryption().  See src/backend/crypto/README for more details.
+
 
 Authors:
 	Teodor Sigaev	<[email protected]>
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 0683f42c25..5ca5f17db3 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -501,13 +501,16 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 		 * we don't need to be able to detect concurrent splits yet.)
 		 */
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
 				recptr = gistXLogSplit(is_leaf,
 									   dist, oldrlink, oldnsn, leftchildbuf,
 									   markfollowright);
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -568,7 +571,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 			MarkBufferDirty(leftchildbuf);
 
 		if (is_build)
-			recptr = GistBuildLSN;
+			recptr = !FileEncryptionEnabled ? GistBuildLSN :
+						LSNForEncryption(RelationIsPermanent(rel));
 		else
 		{
 			if (RelationNeedsWAL(rel))
@@ -586,6 +590,8 @@ gistplacetopage(Relation rel, Size freespace, GISTSTATE *giststate,
 										deloffs, ndeloffs, itup, ntup,
 										leftchildbuf);
 			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
 				recptr = gistGetFakeLSN(rel);
 		}
@@ -1665,6 +1671,8 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 
 	if (ndeletable > 0)
 	{
+		XLogRecPtr	recptr;
+
 		TransactionId latestRemovedXid = InvalidTransactionId;
 
 		if (XLogStandbyInfoActive() && RelationNeedsWAL(rel))
@@ -1690,16 +1698,17 @@ gistprunepage(Relation rel, Page page, Buffer buffer, Relation heapRel)
 		/* XLOG stuff */
 		if (RelationNeedsWAL(rel))
 		{
-			XLogRecPtr	recptr;
-
 			recptr = gistXLogDelete(buffer,
 									deletable, ndeletable,
 									latestRemovedXid);
 
-			PageSetLSN(page, recptr);
 		}
+		else if (FileEncryptionEnabled)
+			recptr = LSNForEncryption(RelationIsPermanent(rel));
 		else
-			PageSetLSN(page, gistGetFakeLSN(rel));
+			recptr = gistGetFakeLSN(rel);
+
+		PageSetLSN(page, recptr);
 
 		END_CRIT_SECTION();
 	}
diff --git a/src/backend/access/gist/gistbuild.c b/src/backend/access/gist/gistbuild.c
index 1054f6f1f2..a8b82483e8 100644
--- a/src/backend/access/gist/gistbuild.c
+++ b/src/backend/access/gist/gistbuild.c
@@ -299,7 +299,8 @@ gistbuild(Relation heap, Relation index, IndexInfo *indexInfo)
 		GISTInitBuffer(buffer, F_LEAF);
 
 		MarkBufferDirty(buffer);
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(index)));
 
 		UnlockReleaseBuffer(buffer);
 
@@ -451,7 +452,8 @@ gist_indexsortbuild(GISTBuildState *state)
 
 	/* Write out the root */
 	RelationOpenSmgr(state->indexrel);
-	PageSetLSN(pagestate->page, GistBuildLSN);
+	PageSetLSN(pagestate->page, !FileEncryptionEnabled ? GistBuildLSN :
+			   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 	PageSetChecksumInplace(pagestate->page, GIST_ROOT_BLKNO);
 	smgrwrite(state->indexrel->rd_smgr, MAIN_FORKNUM, GIST_ROOT_BLKNO,
 			  pagestate->page, true);
@@ -573,7 +575,8 @@ gist_indexsortbuild_flush_ready_pages(GISTBuildState *state)
 		if (blkno != state->pages_written)
 			elog(ERROR, "unexpected block number to flush GiST sorting build");
 
-		PageSetLSN(page, GistBuildLSN);
+		PageSetLSN(page, !FileEncryptionEnabled ? GistBuildLSN :
+				   LSNForEncryption(RelationIsPermanent(state->indexrel)));
 		PageSetChecksumInplace(page, blkno);
 		smgrextend(state->indexrel->rd_smgr, MAIN_FORKNUM, blkno, page, true);
 
diff --git a/src/backend/access/gist/gistvacuum.c b/src/backend/access/gist/gistvacuum.c
index 0663193531..f783edd627 100644
--- a/src/backend/access/gist/gistvacuum.c
+++ b/src/backend/access/gist/gistvacuum.c
@@ -174,6 +174,8 @@ gistvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 	vstate.callback_state = callback_state;
 	if (RelationNeedsWAL(rel))
 		vstate.startNSN = GetInsertRecPtr();
+	else if (FileEncryptionEnabled)
+		vstate.startNSN = LSNForEncryption(RelationIsPermanent(rel));
 	else
 		vstate.startNSN = gistGetFakeLSN(rel);
 
@@ -353,6 +355,8 @@ restart:
 		 */
 		if (ntodelete > 0)
 		{
+			XLogRecPtr	recptr;
+
 			START_CRIT_SECTION();
 
 			MarkBufferDirty(buffer);
@@ -361,16 +365,15 @@ restart:
 			GistMarkTuplesDeleted(page);
 
 			if (RelationNeedsWAL(rel))
-			{
-				XLogRecPtr	recptr;
-
 				recptr = gistXLogUpdate(buffer,
 										todelete, ntodelete,
 										NULL, 0, InvalidBuffer);
-				PageSetLSN(page, recptr);
-			}
+			else if (FileEncryptionEnabled)
+				recptr = LSNForEncryption(RelationIsPermanent(rel));
 			else
-				PageSetLSN(page, gistGetFakeLSN(rel));
+				recptr = gistGetFakeLSN(rel);
+
+			PageSetLSN(page, recptr);
 
 			END_CRIT_SECTION();
 
@@ -657,8 +660,11 @@ gistdeletepage(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 
 	if (RelationNeedsWAL(info->index))
 		recptr = gistXLogPageDelete(leafBuffer, txid, parentBuffer, downlink);
+	else if (FileEncryptionEnabled)
+		recptr = LSNForEncryption(RelationIsPermanent(info->index));
 	else
 		recptr = gistGetFakeLSN(info->index);
+
 	PageSetLSN(parentPage, recptr);
 	PageSetLSN(leafPage, recptr);
 
-- 
2.20.1


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--AhhlLboLdkugWU4S--





^ permalink  raw  reply  [nested|flat] 49+ messages in thread

* Re: Stack-based tracking of per-node WAL/buffer usage
@ 2026-01-13 08:01 Lukas Fittl <[email protected]>
  0 siblings, 0 replies; 49+ messages in thread

From: Lukas Fittl @ 2026-01-13 08:01 UTC (permalink / raw)
  To: Andres Freund <[email protected]>; +Cc: PostgreSQL Hackers <[email protected]>

On Fri, Jan 9, 2026 at 11:38 AM Andres Freund <[email protected]> wrote:
> I pushed 0001. The only changes I made were to break a few long lines.

Thanks!

Attached v5, feedback addressed unless otherwise noted, with the patch
adding macros to access pgBufferUsage/pgWalUsage (was v4/0003) to the
front per your request.

Its also worth noting that 2defd0006255 just added a new
"instrument_node.h". We could consider moving the per-node
instrumentation structs and associated functions there (but probably
keep a single "instrument.c" unit file?). Thoughts?

> Hm. It looks to me that after moving trigger instrumentation to its own thing,
> there are no users of InstrAlloc() with n > 1. I think it may make sense to
> drop that?

Yep, makes sense, done like that. I also did a code search for any
extension use cases and couldn't find anything that'd need multiples
of the Instrumentation struct (either the new general purpose one, or
the per-node one).

> > +++ b/src/backend/executor/execParallel.c
> > ...
> > -     /* array of num_plan_nodes * num_workers Instrumentation objects follows */
> > +
> > +     /*
> > +      * array of num_plan_nodes * num_workers NodeInstrumentation objects
> > +      * follows
> > +      */
> >  };
>
> Spurious change, I think?

pgindent forces the line break here, because of the Instrumentation =>
NodeInstrumentation change.

Are you saying we shouldn't make that wording change? then I'd suggest
we lower case the "i" of "instrumentation", so it doesn't get confused
with the struct of that name.

> >  typedef struct WorkerInstrumentation
> >  {
> >       int                     num_workers;    /* # of structures that follow */
> > -     Instrumentation instrument[FLEXIBLE_ARRAY_MEMBER];
> > +     NodeInstrumentation instrument[FLEXIBLE_ARRAY_MEMBER];
> >  } WorkerInstrumentation;
>
> Hm. Shouldn't this be WorkerNodeInstrumentation now?

Yeah, the name feels a bit lengthy, but given that I found some of the
parallel query instrumentation logic confusing, erring on the side of
being more explicit is probably good here. Done that way.

> > Subject: [PATCH v4 4/7] Optimize measuring WAL/buffer usage through
> >  stack-based instrumentation
>
> I think it may be good to have some tests for edge cases. E.g. testing that a
> query that an explain analyze of a query that executes a plpgsql function
> which in turn does another explain analyze or just another query without
> explain analyze, does something reasonable.
>

Yeah, that makes sense - I ran out of time to add this now (and I feel
there are other things worth discussing in the meantime), but will
work on this.

> > @@ -1266,7 +1280,15 @@ InitResultRelInfo(ResultRelInfo *resultRelInfo,
> >               resultRelInfo->ri_TrigWhenExprs = (ExprState **)
> >                       palloc0(n * sizeof(ExprState *));
> >               if (instrument_options)
> > -                     resultRelInfo->ri_TrigInstrument = InstrAllocTrigger(n, instrument_options);
> > +             {
> > +                     /*
> > +                      * Triggers do not individually track buffer/WAL usage, even if
> > +                      * otherwise tracked
> > +                      */
>
> Why is that?

I originally special cased triggers (i.e. didn't permit trigger
instrumentation to track WAL/buffer usage) because the current code
does not need it, and it simplified the logic, because we always need
to add child stack information to the parent so that totals are
correct, e.g. for pg_stat_statements.

But, I see your point that this isn't great, and we may want to emit
WAL/buffer usage for triggers in EXPLAIN in the future. To handle this
I adjusted this so we now also finalize the per-trigger
instrumentation in ExecutorFinish, like we do it for per-node
instrumentation.

>
>
> > @@ -59,15 +125,31 @@ InstrStart(Instrumentation *instr)
> >               !INSTR_TIME_SET_CURRENT_LAZY(instr->starttime))
> >               elog(ERROR, "InstrStart called twice in a row");
> >
> > -     if (instr->need_bufusage)
> > -             instr->bufusage_start = pgBufferUsage;
> > +     if (instr->need_bufusage || instr->need_walusage)
> > +     {
> > +             Assert(CurrentResourceOwner != NULL);
> > +             instr->owner = CurrentResourceOwner;
> > +
> > +             /*
> > +              * Allocate the stack resource in a memory context that survives
> > +              * during an abort. This will be freed by InstrStop (regular
> > +              * execution) or ResOwnerReleaseInstrumentation (abort).
> > +              *
> > +              * We don't do this in InstrAlloc to avoid leaking when InstrStart +
> > +              * InstrStop isn't called.
> > +              */
> > +             if (instr->stack == NULL)
> > +                     instr->stack = MemoryContextAllocZero(CurTransactionContext, sizeof(InstrStack));
> >
> > -     if (instr->need_walusage)
> > -             instr->walusage_start = pgWalUsage;
> > +             ResourceOwnerEnlarge(instr->owner);
> > +             ResourceOwnerRememberInstrStack(instr->owner, instr->stack);
> > +
> > +             InstrPushStack(instr->stack);
> > +     }
> >  }
>
> I'm still worried that allocating something in CurTransactionContext will bite
> us eventually. It seems like it'd be pretty sane to want to have
> instrumentation around procedure execution, for example.

Hmm, I'll have to spend more time thinking through that future
procedure instrumentation case and how it interacts with resource
owners.

Just to state it, the main point of using CurTransactionContext
(instead of CurrentMemoryContext) here is that we handle an abort
situation that may propagate above the function that called
InstrStart. We need to make sure memory survives until the resource
owner gets cleaned up (either by aborting, or by InstrStop being
called with finalize = true), so we can add the stack to its parent.

I'm happy to adjust this to TopTransactionContext if that's what you
had in mind?

Or maybe I'm missing some other way to get a memory context that
relates to the current resource owner? (i.e. survives at least until
the resource owner gets released)

> >  void
> > -InstrStop(Instrumentation *instr)
> > +InstrStop(Instrumentation *instr, bool finalize)
> >  {
> >       instr_time      endtime;
> >
> > @@ -83,14 +165,28 @@ InstrStop(Instrumentation *instr)
> >               INSTR_TIME_SET_ZERO(instr->starttime);
> >       }
> >
> > -     /* Add delta of buffer usage since entry to node's totals */
> > -     if (instr->need_bufusage)
> > -             BufferUsageAccumDiff(&instr->bufusage,
> > -                                                      &pgBufferUsage, &instr->bufusage_start);
> > +     if (instr->need_bufusage || instr->need_walusage)
> > +     {
> > +             InstrPopStack(instr->stack, finalize);
> >
> > -     if (instr->need_walusage)
> > -             WalUsageAccumDiff(&instr->walusage,
> > -                                               &pgWalUsage, &instr->walusage_start);
> > +             Assert(instr->owner != NULL);
> > +             ResourceOwnerForgetInstrStack(instr->owner, instr->stack);
> > +             instr->owner = NULL;
> > +
> > +             if (finalize)
> > +             {
> > +                     /*
> > +                      * To avoid keeping memory allocated beyond when its needed, copy
> > +                      * the result to the current memory context, and free it in the
> > +                      * transaction context.
> > +                      */
> > +                     InstrStack *stack = palloc(sizeof(InstrStack));
> > +
> > +                     memcpy(stack, instr->stack, sizeof(InstrStack));
> > +                     pfree(instr->stack);
> > +                     instr->stack = stack;
> > +             }
> > +     }
> >  }
>
> Hm. I'm not entirely sure I understand the gain due to the palloc & copy &
> pfree. Won't that typically increase memory usage due to temporarily having
> two versions of the InstrStack?

This is mainly about making the caller to InstrStop take
responsibility for freeing the memory allocation when its current
context gets freed, which will potentially be before
CurTransactionContext (or whichever context we chose) gets freed. If
we kept it around and e.g. this was a long transaction with many
queries executed, we'd keep consuming more and more memory otherwise.

Or looking at it differently, the principle here is, if you've reached
InstrStop (with finalize=true), no aborts involving this stack can
occur anymore, and so all that's left is for the caller to utilize the
instrumentation data as it sees fit, e.g. emitting it to the logs,
etc.

> >  /* report usage after parallel executor shutdown */
> >  void
> > -InstrEndParallelQuery(BufferUsage *bufusage, WalUsage *walusage)
> > +InstrEndParallelQuery(Instrumentation *instr, BufferUsage *bufusage, WalUsage *walusage)
>
> Wonder if we should slap a pg_nodiscard on InstrStartParallelQuery() to make
> it easier for extensions to notice this? OTOH, InstrEndParallelQuery() will
> make that pretty clear...

Good point, why not, added pg_nodiscard - seems like cheap insurance
to help notice someone they're calling it incorrectly.

> > @@ -975,19 +976,17 @@ heap_vacuum_rel(Relation rel, const VacuumParams params,
> >                       int64           total_blks_hit;
> >                       int64           total_blks_read;
> >                       int64           total_blks_dirtied;
> > +                     BufferUsage bufusage = instr->stack->bufusage;
> > +                     WalUsage        walusage = instr->stack->walusage;
> > ...
> > -                     total_blks_dirtied = bufferusage.shared_blks_dirtied +
> > -                             bufferusage.local_blks_dirtied;
> > +
> > +                     total_blks_hit = bufusage.shared_blks_hit +
> ...
>
> Why rename and move the declaration of bufferusage here? That seems to make
> the diff unnecessarily noisy?
>
> Kinda going the other way: Why copy this on the stack, rather than use a
> pointer?

For now to keep the diff smaller, I went the way of not renaming the variable.

I don't think efficiency matters much in that code path (i.e. the copy
of ~150 bytes seems fine to me), but happy to adjust if you think a
pointer is better.

Thanks,
Lukas

--
Lukas Fittl


Attachments:

  [application/octet-stream] v5-0004-Use-Instrumentation-stack-for-parallel-query-aggr.patch (9.4K, ../../CAP53Pkw85U-aMRzkZ+kRKfCh0pA5vyo=_W16gPK4sirZxiJy=A@mail.gmail.com/2-v5-0004-Use-Instrumentation-stack-for-parallel-query-aggr.patch)
  download | inline diff:
From 1c26dd85a987b99c7fca71fadf90b8bccccd06ec Mon Sep 17 00:00:00 2001
From: Lukas Fittl <[email protected]>
Date: Tue, 9 Sep 2025 02:24:49 -0700
Subject: [PATCH v5 4/6] Use Instrumentation stack for parallel query
 aggregation in workers

---
 src/backend/access/brin/brin.c        |  6 ++++--
 src/backend/access/gin/gininsert.c    |  6 ++++--
 src/backend/access/nbtree/nbtsort.c   |  6 ++++--
 src/backend/commands/vacuumparallel.c |  6 ++++--
 src/backend/executor/execParallel.c   |  6 ++++--
 src/backend/executor/instrument.c     | 19 +++++++++----------
 src/include/executor/instrument.h     |  4 ++--
 7 files changed, 31 insertions(+), 22 deletions(-)

diff --git a/src/backend/access/brin/brin.c b/src/backend/access/brin/brin.c
index 6887e421442..c1c3d03b6ed 100644
--- a/src/backend/access/brin/brin.c
+++ b/src/backend/access/brin/brin.c
@@ -2885,6 +2885,7 @@ _brin_parallel_build_main(dsm_segment *seg, shm_toc *toc)
 	Relation	indexRel;
 	LOCKMODE	heapLockmode;
 	LOCKMODE	indexLockmode;
+	Instrumentation *instr;
 	WalUsage   *walusage;
 	BufferUsage *bufferusage;
 	int			sortmem;
@@ -2934,7 +2935,7 @@ _brin_parallel_build_main(dsm_segment *seg, shm_toc *toc)
 	tuplesort_attach_shared(sharedsort, seg);
 
 	/* Prepare to track buffer usage during parallel execution */
-	InstrStartParallelQuery();
+	instr = InstrStartParallelQuery();
 
 	/*
 	 * Might as well use reliable figure when doling out maintenance_work_mem
@@ -2949,7 +2950,8 @@ _brin_parallel_build_main(dsm_segment *seg, shm_toc *toc)
 	/* Report WAL/buffer usage during parallel execution */
 	bufferusage = shm_toc_lookup(toc, PARALLEL_KEY_BUFFER_USAGE, false);
 	walusage = shm_toc_lookup(toc, PARALLEL_KEY_WAL_USAGE, false);
-	InstrEndParallelQuery(&bufferusage[ParallelWorkerNumber],
+	InstrEndParallelQuery(instr,
+						  &bufferusage[ParallelWorkerNumber],
 						  &walusage[ParallelWorkerNumber]);
 
 	index_close(indexRel, indexLockmode);
diff --git a/src/backend/access/gin/gininsert.c b/src/backend/access/gin/gininsert.c
index 0d63fb4ba27..9149d735d59 100644
--- a/src/backend/access/gin/gininsert.c
+++ b/src/backend/access/gin/gininsert.c
@@ -2108,6 +2108,7 @@ _gin_parallel_build_main(dsm_segment *seg, shm_toc *toc)
 	Relation	indexRel;
 	LOCKMODE	heapLockmode;
 	LOCKMODE	indexLockmode;
+	Instrumentation *instr;
 	WalUsage   *walusage;
 	BufferUsage *bufferusage;
 	int			sortmem;
@@ -2176,7 +2177,7 @@ _gin_parallel_build_main(dsm_segment *seg, shm_toc *toc)
 	tuplesort_attach_shared(sharedsort, seg);
 
 	/* Prepare to track buffer usage during parallel execution */
-	InstrStartParallelQuery();
+	instr = InstrStartParallelQuery();
 
 	/*
 	 * Might as well use reliable figure when doling out maintenance_work_mem
@@ -2191,7 +2192,8 @@ _gin_parallel_build_main(dsm_segment *seg, shm_toc *toc)
 	/* Report WAL/buffer usage during parallel execution */
 	bufferusage = shm_toc_lookup(toc, PARALLEL_KEY_BUFFER_USAGE, false);
 	walusage = shm_toc_lookup(toc, PARALLEL_KEY_WAL_USAGE, false);
-	InstrEndParallelQuery(&bufferusage[ParallelWorkerNumber],
+	InstrEndParallelQuery(instr,
+						  &bufferusage[ParallelWorkerNumber],
 						  &walusage[ParallelWorkerNumber]);
 
 	index_close(indexRel, indexLockmode);
diff --git a/src/backend/access/nbtree/nbtsort.c b/src/backend/access/nbtree/nbtsort.c
index 90ab4e91b56..44d4bbf0b59 100644
--- a/src/backend/access/nbtree/nbtsort.c
+++ b/src/backend/access/nbtree/nbtsort.c
@@ -1750,6 +1750,7 @@ _bt_parallel_build_main(dsm_segment *seg, shm_toc *toc)
 	Relation	indexRel;
 	LOCKMODE	heapLockmode;
 	LOCKMODE	indexLockmode;
+	Instrumentation *instr;
 	WalUsage   *walusage;
 	BufferUsage *bufferusage;
 	int			sortmem;
@@ -1825,7 +1826,7 @@ _bt_parallel_build_main(dsm_segment *seg, shm_toc *toc)
 	}
 
 	/* Prepare to track buffer usage during parallel execution */
-	InstrStartParallelQuery();
+	instr = InstrStartParallelQuery();
 
 	/* Perform sorting of spool, and possibly a spool2 */
 	sortmem = maintenance_work_mem / btshared->scantuplesortstates;
@@ -1835,7 +1836,8 @@ _bt_parallel_build_main(dsm_segment *seg, shm_toc *toc)
 	/* Report WAL/buffer usage during parallel execution */
 	bufferusage = shm_toc_lookup(toc, PARALLEL_KEY_BUFFER_USAGE, false);
 	walusage = shm_toc_lookup(toc, PARALLEL_KEY_WAL_USAGE, false);
-	InstrEndParallelQuery(&bufferusage[ParallelWorkerNumber],
+	InstrEndParallelQuery(instr,
+						  &bufferusage[ParallelWorkerNumber],
 						  &walusage[ParallelWorkerNumber]);
 
 #ifdef BTREE_BUILD_STATS
diff --git a/src/backend/commands/vacuumparallel.c b/src/backend/commands/vacuumparallel.c
index c3b3c9ea21a..10ba717bb6b 100644
--- a/src/backend/commands/vacuumparallel.c
+++ b/src/backend/commands/vacuumparallel.c
@@ -994,6 +994,7 @@ parallel_vacuum_main(dsm_segment *seg, shm_toc *toc)
 	PVIndStats *indstats;
 	PVShared   *shared;
 	TidStore   *dead_items;
+	Instrumentation *instr;
 	BufferUsage *buffer_usage;
 	WalUsage   *wal_usage;
 	int			nindexes;
@@ -1083,7 +1084,7 @@ parallel_vacuum_main(dsm_segment *seg, shm_toc *toc)
 	error_context_stack = &errcallback;
 
 	/* Prepare to track buffer usage during parallel execution */
-	InstrStartParallelQuery();
+	instr = InstrStartParallelQuery();
 
 	/* Process indexes to perform vacuum/cleanup */
 	parallel_vacuum_process_safe_indexes(&pvs);
@@ -1091,7 +1092,8 @@ parallel_vacuum_main(dsm_segment *seg, shm_toc *toc)
 	/* Report buffer/WAL usage during parallel execution */
 	buffer_usage = shm_toc_lookup(toc, PARALLEL_VACUUM_KEY_BUFFER_USAGE, false);
 	wal_usage = shm_toc_lookup(toc, PARALLEL_VACUUM_KEY_WAL_USAGE, false);
-	InstrEndParallelQuery(&buffer_usage[ParallelWorkerNumber],
+	InstrEndParallelQuery(instr,
+						  &buffer_usage[ParallelWorkerNumber],
 						  &wal_usage[ParallelWorkerNumber]);
 
 	/* Report any remaining cost-based vacuum delay time */
diff --git a/src/backend/executor/execParallel.c b/src/backend/executor/execParallel.c
index 43286d27663..bc4baa07347 100644
--- a/src/backend/executor/execParallel.c
+++ b/src/backend/executor/execParallel.c
@@ -1455,6 +1455,7 @@ void
 ParallelQueryMain(dsm_segment *seg, shm_toc *toc)
 {
 	FixedParallelExecutorState *fpes;
+	Instrumentation *instr;
 	BufferUsage *buffer_usage;
 	WalUsage   *wal_usage;
 	DestReceiver *receiver;
@@ -1515,7 +1516,7 @@ ParallelQueryMain(dsm_segment *seg, shm_toc *toc)
 	 * leader, which also doesn't count buffer accesses and WAL activity that
 	 * occur during executor startup.
 	 */
-	InstrStartParallelQuery();
+	instr = InstrStartParallelQuery();
 
 	/*
 	 * Run the plan.  If we specified a tuple bound, be careful not to demand
@@ -1531,7 +1532,8 @@ ParallelQueryMain(dsm_segment *seg, shm_toc *toc)
 	/* Report buffer/WAL usage during parallel execution. */
 	buffer_usage = shm_toc_lookup(toc, PARALLEL_KEY_BUFFER_USAGE, false);
 	wal_usage = shm_toc_lookup(toc, PARALLEL_KEY_WAL_USAGE, false);
-	InstrEndParallelQuery(&buffer_usage[ParallelWorkerNumber],
+	InstrEndParallelQuery(instr,
+						  &buffer_usage[ParallelWorkerNumber],
 						  &wal_usage[ParallelWorkerNumber]);
 
 	/* Report instrumentation data if any instrumentation options are set. */
diff --git a/src/backend/executor/instrument.c b/src/backend/executor/instrument.c
index 8fca1ddbe64..9131b24f643 100644
--- a/src/backend/executor/instrument.c
+++ b/src/backend/executor/instrument.c
@@ -20,10 +20,8 @@
 #include "utils/resowner.h"
 
 BufferUsage pgBufferUsage;
-static BufferUsage save_pgBufferUsage;
 WalUsage	pgWalUsage;
 InstrStack *pgInstrStack = NULL;
-static WalUsage save_pgWalUsage;
 
 static void BufferUsageAdd(BufferUsage *dst, const BufferUsage *add);
 static void WalUsageAdd(WalUsage *dst, WalUsage *add);
@@ -380,21 +378,22 @@ InstrAggNode(NodeInstrumentation *dst, NodeInstrumentation *add)
 }
 
 /* start instrumentation during parallel executor startup */
-void
+Instrumentation *
 InstrStartParallelQuery(void)
 {
-	save_pgBufferUsage = pgBufferUsage;
-	save_pgWalUsage = pgWalUsage;
+	Instrumentation *instr = InstrAlloc(INSTRUMENT_BUFFERS | INSTRUMENT_WAL);
+
+	InstrStart(instr);
+	return instr;
 }
 
 /* report usage after parallel executor shutdown */
 void
-InstrEndParallelQuery(BufferUsage *bufusage, WalUsage *walusage)
+InstrEndParallelQuery(Instrumentation *instr, BufferUsage *bufusage, WalUsage *walusage)
 {
-	memset(bufusage, 0, sizeof(BufferUsage));
-	BufferUsageAccumDiff(bufusage, &pgBufferUsage, &save_pgBufferUsage);
-	memset(walusage, 0, sizeof(WalUsage));
-	WalUsageAccumDiff(walusage, &pgWalUsage, &save_pgWalUsage);
+	InstrStop(instr, true);
+	memcpy(bufusage, &instr->stack->bufusage, sizeof(BufferUsage));
+	memcpy(walusage, &instr->stack->walusage, sizeof(WalUsage));
 }
 
 /* accumulate work done by workers in leader's stats */
diff --git a/src/include/executor/instrument.h b/src/include/executor/instrument.h
index 0bf1ef548d6..998d151c56a 100644
--- a/src/include/executor/instrument.h
+++ b/src/include/executor/instrument.h
@@ -186,8 +186,8 @@ extern void InstrUpdateTupleCount(NodeInstrumentation *instr, double nTuples);
 extern void InstrEndLoop(NodeInstrumentation *instr);
 extern void InstrAggNode(NodeInstrumentation *dst, NodeInstrumentation *add);
 
-extern void InstrStartParallelQuery(void);
-extern void InstrEndParallelQuery(BufferUsage *bufusage, WalUsage *walusage);
+pg_nodiscard extern Instrumentation *InstrStartParallelQuery(void);
+extern void InstrEndParallelQuery(Instrumentation *instr, BufferUsage *bufusage, WalUsage *walusage);
 extern void InstrAccumParallelQuery(BufferUsage *bufusage, WalUsage *walusage);
 extern void BufferUsageAccumDiff(BufferUsage *dst,
 								 const BufferUsage *add, const BufferUsage *sub);
-- 
2.47.1



  [application/octet-stream] v5-0005-Convert-remaining-users-of-pgBufferUsage-to-use-I.patch (15.4K, ../../CAP53Pkw85U-aMRzkZ+kRKfCh0pA5vyo=_W16gPK4sirZxiJy=A@mail.gmail.com/3-v5-0005-Convert-remaining-users-of-pgBufferUsage-to-use-I.patch)
  download | inline diff:
From 80f064bcbae4d910a571335c4b163d736d9644c0 Mon Sep 17 00:00:00 2001
From: Lukas Fittl <[email protected]>
Date: Tue, 9 Sep 2025 02:26:56 -0700
Subject: [PATCH v5 5/6] Convert remaining users of pgBufferUsage to use
 InstrStart/InstrStop, drop the global

---
 src/backend/access/heap/vacuumlazy.c | 15 ++++++------
 src/backend/commands/analyze.c       | 31 ++++++++++++------------
 src/backend/commands/explain.c       | 26 +++++++--------------
 src/backend/commands/explain_dr.c    | 31 +++++++++++++-----------
 src/backend/commands/prepare.c       | 27 ++++++++-------------
 src/backend/executor/instrument.c    | 35 +---------------------------
 src/include/executor/instrument.h    |  8 +------
 7 files changed, 60 insertions(+), 113 deletions(-)

diff --git a/src/backend/access/heap/vacuumlazy.c b/src/backend/access/heap/vacuumlazy.c
index 2086a577199..7d978404e04 100644
--- a/src/backend/access/heap/vacuumlazy.c
+++ b/src/backend/access/heap/vacuumlazy.c
@@ -643,8 +643,7 @@ heap_vacuum_rel(Relation rel, const VacuumParams params,
 	TimestampTz starttime = 0;
 	PgStat_Counter startreadtime = 0,
 				startwritetime = 0;
-	WalUsage	startwalusage = pgWalUsage;
-	BufferUsage startbufferusage = pgBufferUsage;
+	Instrumentation *instr = NULL;
 	ErrorContextCallback errcallback;
 	char	  **indnames = NULL;
 	Size		dead_items_max_bytes = 0;
@@ -660,6 +659,8 @@ heap_vacuum_rel(Relation rel, const VacuumParams params,
 			startreadtime = pgStatBlockReadTime;
 			startwritetime = pgStatBlockWriteTime;
 		}
+		instr = InstrAlloc(INSTRUMENT_BUFFERS | INSTRUMENT_WAL);
+		InstrStart(instr);
 	}
 
 	/* Used for instrumentation and stats report */
@@ -985,14 +986,14 @@ heap_vacuum_rel(Relation rel, const VacuumParams params,
 	{
 		TimestampTz endtime = GetCurrentTimestamp();
 
+		InstrStop(instr, true);
+
 		if (verbose || params.log_vacuum_min_duration == 0 ||
 			TimestampDifferenceExceeds(starttime, endtime,
 									   params.log_vacuum_min_duration))
 		{
 			long		secs_dur;
 			int			usecs_dur;
-			WalUsage	walusage;
-			BufferUsage bufferusage;
 			StringInfoData buf;
 			char	   *msgfmt;
 			int32		diff;
@@ -1001,12 +1002,10 @@ heap_vacuum_rel(Relation rel, const VacuumParams params,
 			int64		total_blks_hit;
 			int64		total_blks_read;
 			int64		total_blks_dirtied;
+			BufferUsage bufferusage = instr->stack->bufusage;
+			WalUsage	walusage = instr->stack->walusage;
 
 			TimestampDifference(starttime, endtime, &secs_dur, &usecs_dur);
-			memset(&walusage, 0, sizeof(WalUsage));
-			WalUsageAccumDiff(&walusage, &pgWalUsage, &startwalusage);
-			memset(&bufferusage, 0, sizeof(BufferUsage));
-			BufferUsageAccumDiff(&bufferusage, &pgBufferUsage, &startbufferusage);
 
 			total_blks_hit = bufferusage.shared_blks_hit +
 				bufferusage.local_blks_hit;
diff --git a/src/backend/commands/analyze.c b/src/backend/commands/analyze.c
index a483424152c..47cac75bc20 100644
--- a/src/backend/commands/analyze.c
+++ b/src/backend/commands/analyze.c
@@ -308,9 +308,7 @@ do_analyze_rel(Relation onerel, const VacuumParams params,
 	Oid			save_userid;
 	int			save_sec_context;
 	int			save_nestlevel;
-	WalUsage	startwalusage = pgWalUsage;
-	BufferUsage startbufferusage = pgBufferUsage;
-	BufferUsage bufferusage;
+	Instrumentation *instr = NULL;
 	PgStat_Counter startreadtime = 0;
 	PgStat_Counter startwritetime = 0;
 
@@ -361,6 +359,9 @@ do_analyze_rel(Relation onerel, const VacuumParams params,
 		}
 
 		pg_rusage_init(&ru0);
+
+		instr = InstrAlloc(INSTRUMENT_BUFFERS | INSTRUMENT_WAL);
+		InstrStart(instr);
 	}
 
 	/* Used for instrumentation and stats report */
@@ -741,12 +742,13 @@ do_analyze_rel(Relation onerel, const VacuumParams params,
 	{
 		TimestampTz endtime = GetCurrentTimestamp();
 
+		InstrStop(instr, true);
+
 		if (verbose || params.log_analyze_min_duration == 0 ||
 			TimestampDifferenceExceeds(starttime, endtime,
 									   params.log_analyze_min_duration))
 		{
 			long		delay_in_ms;
-			WalUsage	walusage;
 			double		read_rate = 0;
 			double		write_rate = 0;
 			char	   *msgfmt;
@@ -754,18 +756,15 @@ do_analyze_rel(Relation onerel, const VacuumParams params,
 			int64		total_blks_hit;
 			int64		total_blks_read;
 			int64		total_blks_dirtied;
-
-			memset(&bufferusage, 0, sizeof(BufferUsage));
-			BufferUsageAccumDiff(&bufferusage, &pgBufferUsage, &startbufferusage);
-			memset(&walusage, 0, sizeof(WalUsage));
-			WalUsageAccumDiff(&walusage, &pgWalUsage, &startwalusage);
-
-			total_blks_hit = bufferusage.shared_blks_hit +
-				bufferusage.local_blks_hit;
-			total_blks_read = bufferusage.shared_blks_read +
-				bufferusage.local_blks_read;
-			total_blks_dirtied = bufferusage.shared_blks_dirtied +
-				bufferusage.local_blks_dirtied;
+			BufferUsage bufusage = instr->stack->bufusage;
+			WalUsage	walusage = instr->stack->walusage;
+
+			total_blks_hit = bufusage.shared_blks_hit +
+				bufusage.local_blks_hit;
+			total_blks_read = bufusage.shared_blks_read +
+				bufusage.local_blks_read;
+			total_blks_dirtied = bufusage.shared_blks_dirtied +
+				bufusage.local_blks_dirtied;
 
 			/*
 			 * We do not expect an analyze to take > 25 days and it simplifies
diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c
index 075000b80c8..dee5344e6d3 100644
--- a/src/backend/commands/explain.c
+++ b/src/backend/commands/explain.c
@@ -322,14 +322,16 @@ standard_ExplainOneQuery(Query *query, int cursorOptions,
 						 QueryEnvironment *queryEnv)
 {
 	PlannedStmt *plan;
-	instr_time	planstart,
-				planduration;
-	BufferUsage bufusage_start,
-				bufusage;
+	Instrumentation *instr = NULL;
 	MemoryContextCounters mem_counters;
 	MemoryContext planner_ctx = NULL;
 	MemoryContext saved_ctx = NULL;
 
+	if (es->buffers)
+		instr = InstrAlloc(INSTRUMENT_TIMER | INSTRUMENT_BUFFERS);
+	else
+		instr = InstrAlloc(INSTRUMENT_TIMER);
+
 	if (es->memory)
 	{
 		/*
@@ -346,15 +348,12 @@ standard_ExplainOneQuery(Query *query, int cursorOptions,
 		saved_ctx = MemoryContextSwitchTo(planner_ctx);
 	}
 
-	if (es->buffers)
-		bufusage_start = pgBufferUsage;
-	INSTR_TIME_SET_CURRENT(planstart);
+	InstrStart(instr);
 
 	/* plan the query */
 	plan = pg_plan_query(query, queryString, cursorOptions, params, es);
 
-	INSTR_TIME_SET_CURRENT(planduration);
-	INSTR_TIME_SUBTRACT(planduration, planstart);
+	InstrStop(instr, true);
 
 	if (es->memory)
 	{
@@ -362,16 +361,9 @@ standard_ExplainOneQuery(Query *query, int cursorOptions,
 		MemoryContextMemConsumed(planner_ctx, &mem_counters);
 	}
 
-	/* calc differences of buffer counters. */
-	if (es->buffers)
-	{
-		memset(&bufusage, 0, sizeof(BufferUsage));
-		BufferUsageAccumDiff(&bufusage, &pgBufferUsage, &bufusage_start);
-	}
-
 	/* run it (if needed) and produce output */
 	ExplainOnePlan(plan, into, es, queryString, params, queryEnv,
-				   &planduration, (es->buffers ? &bufusage : NULL),
+				   &instr->total, (es->buffers ? &instr->stack->bufusage : NULL),
 				   es->memory ? &mem_counters : NULL);
 }
 
diff --git a/src/backend/commands/explain_dr.c b/src/backend/commands/explain_dr.c
index 3c96061cf32..9e4cd8ad7d0 100644
--- a/src/backend/commands/explain_dr.c
+++ b/src/backend/commands/explain_dr.c
@@ -110,15 +110,20 @@ serializeAnalyzeReceive(TupleTableSlot *slot, DestReceiver *self)
 	MemoryContext oldcontext;
 	StringInfo	buf = &myState->buf;
 	int			natts = typeinfo->natts;
-	instr_time	start,
-				end;
-	BufferUsage instr_start;
+	Instrumentation *instr = NULL;
 
 	/* only measure time, buffers if requested */
-	if (myState->es->timing)
-		INSTR_TIME_SET_CURRENT(start);
-	if (myState->es->buffers)
-		instr_start = pgBufferUsage;
+	if (myState->es->timing || myState->es->buffers)
+	{
+		InstrumentOption instrument_options = 0;
+
+		if (myState->es->timing)
+			instrument_options |= INSTRUMENT_TIMER;
+		if (myState->es->buffers)
+			instrument_options |= INSTRUMENT_BUFFERS;
+		instr = InstrAlloc(instrument_options);
+		InstrStart(instr);
+	}
 
 	/* Set or update my derived attribute info, if needed */
 	if (myState->attrinfo != typeinfo || myState->nattrs != natts)
@@ -186,18 +191,16 @@ serializeAnalyzeReceive(TupleTableSlot *slot, DestReceiver *self)
 	MemoryContextSwitchTo(oldcontext);
 	MemoryContextReset(myState->tmpcontext);
 
+	if (myState->es->timing || myState->es->buffers)
+		InstrStop(instr, true);
+
 	/* Update timing data */
 	if (myState->es->timing)
-	{
-		INSTR_TIME_SET_CURRENT(end);
-		INSTR_TIME_ACCUM_DIFF(myState->metrics.timeSpent, end, start);
-	}
+		INSTR_TIME_ADD(myState->metrics.timeSpent, instr->total);
 
 	/* Update buffer metrics */
 	if (myState->es->buffers)
-		BufferUsageAccumDiff(&myState->metrics.bufferUsage,
-							 &pgBufferUsage,
-							 &instr_start);
+		BufferUsageAdd(&myState->metrics.bufferUsage, &instr->stack->bufusage);
 
 	return true;
 }
diff --git a/src/backend/commands/prepare.c b/src/backend/commands/prepare.c
index 5b86a727587..2a1a6d1cf2e 100644
--- a/src/backend/commands/prepare.c
+++ b/src/backend/commands/prepare.c
@@ -578,13 +578,16 @@ ExplainExecuteQuery(ExecuteStmt *execstmt, IntoClause *into, ExplainState *es,
 	ListCell   *p;
 	ParamListInfo paramLI = NULL;
 	EState	   *estate = NULL;
-	instr_time	planstart;
-	instr_time	planduration;
-	BufferUsage bufusage_start,
-				bufusage;
+	Instrumentation *instr = NULL;
 	MemoryContextCounters mem_counters;
 	MemoryContext planner_ctx = NULL;
 	MemoryContext saved_ctx = NULL;
+	int			instrument_options = INSTRUMENT_TIMER;
+
+	if (es->buffers)
+		instrument_options |= INSTRUMENT_BUFFERS;
+
+	instr = InstrAlloc(instrument_options);
 
 	if (es->memory)
 	{
@@ -596,9 +599,7 @@ ExplainExecuteQuery(ExecuteStmt *execstmt, IntoClause *into, ExplainState *es,
 		saved_ctx = MemoryContextSwitchTo(planner_ctx);
 	}
 
-	if (es->buffers)
-		bufusage_start = pgBufferUsage;
-	INSTR_TIME_SET_CURRENT(planstart);
+	InstrStart(instr);
 
 	/* Look it up in the hash table */
 	entry = FetchPreparedStatement(execstmt->name, true);
@@ -633,8 +634,7 @@ ExplainExecuteQuery(ExecuteStmt *execstmt, IntoClause *into, ExplainState *es,
 	cplan = GetCachedPlan(entry->plansource, paramLI,
 						  CurrentResourceOwner, pstate->p_queryEnv);
 
-	INSTR_TIME_SET_CURRENT(planduration);
-	INSTR_TIME_SUBTRACT(planduration, planstart);
+	InstrStop(instr, true);
 
 	if (es->memory)
 	{
@@ -642,13 +642,6 @@ ExplainExecuteQuery(ExecuteStmt *execstmt, IntoClause *into, ExplainState *es,
 		MemoryContextMemConsumed(planner_ctx, &mem_counters);
 	}
 
-	/* calc differences of buffer counters. */
-	if (es->buffers)
-	{
-		memset(&bufusage, 0, sizeof(BufferUsage));
-		BufferUsageAccumDiff(&bufusage, &pgBufferUsage, &bufusage_start);
-	}
-
 	plan_list = cplan->stmt_list;
 
 	/* Explain each query */
@@ -658,7 +651,7 @@ ExplainExecuteQuery(ExecuteStmt *execstmt, IntoClause *into, ExplainState *es,
 
 		if (pstmt->commandType != CMD_UTILITY)
 			ExplainOnePlan(pstmt, into, es, query_string, paramLI, pstate->p_queryEnv,
-						   &planduration, (es->buffers ? &bufusage : NULL),
+						   &instr->total, (es->buffers ? &instr->stack->bufusage : NULL),
 						   es->memory ? &mem_counters : NULL);
 		else
 			ExplainOneUtility(pstmt->utilityStmt, into, es, pstate, paramLI);
diff --git a/src/backend/executor/instrument.c b/src/backend/executor/instrument.c
index 9131b24f643..26e0ae7726c 100644
--- a/src/backend/executor/instrument.c
+++ b/src/backend/executor/instrument.c
@@ -19,11 +19,9 @@
 #include "utils/memutils.h"
 #include "utils/resowner.h"
 
-BufferUsage pgBufferUsage;
 WalUsage	pgWalUsage;
 InstrStack *pgInstrStack = NULL;
 
-static void BufferUsageAdd(BufferUsage *dst, const BufferUsage *add);
 static void WalUsageAdd(WalUsage *dst, WalUsage *add);
 
 /*
@@ -408,7 +406,6 @@ InstrAccumParallelQuery(BufferUsage *bufusage, WalUsage *walusage)
 		WalUsageAdd(&dst->walusage, walusage);
 	}
 
-	BufferUsageAdd(&pgBufferUsage, bufusage);
 	WalUsageAdd(&pgWalUsage, walusage);
 }
 
@@ -423,7 +420,7 @@ InstrStackAdd(InstrStack * dst, InstrStack * add)
 }
 
 /* dst += add */
-static void
+void
 BufferUsageAdd(BufferUsage *dst, const BufferUsage *add)
 {
 	dst->shared_blks_hit += add->shared_blks_hit;
@@ -444,36 +441,6 @@ BufferUsageAdd(BufferUsage *dst, const BufferUsage *add)
 	INSTR_TIME_ADD(dst->temp_blk_write_time, add->temp_blk_write_time);
 }
 
-/* dst += add - sub */
-void
-BufferUsageAccumDiff(BufferUsage *dst,
-					 const BufferUsage *add,
-					 const BufferUsage *sub)
-{
-	dst->shared_blks_hit += add->shared_blks_hit - sub->shared_blks_hit;
-	dst->shared_blks_read += add->shared_blks_read - sub->shared_blks_read;
-	dst->shared_blks_dirtied += add->shared_blks_dirtied - sub->shared_blks_dirtied;
-	dst->shared_blks_written += add->shared_blks_written - sub->shared_blks_written;
-	dst->local_blks_hit += add->local_blks_hit - sub->local_blks_hit;
-	dst->local_blks_read += add->local_blks_read - sub->local_blks_read;
-	dst->local_blks_dirtied += add->local_blks_dirtied - sub->local_blks_dirtied;
-	dst->local_blks_written += add->local_blks_written - sub->local_blks_written;
-	dst->temp_blks_read += add->temp_blks_read - sub->temp_blks_read;
-	dst->temp_blks_written += add->temp_blks_written - sub->temp_blks_written;
-	INSTR_TIME_ACCUM_DIFF(dst->shared_blk_read_time,
-						  add->shared_blk_read_time, sub->shared_blk_read_time);
-	INSTR_TIME_ACCUM_DIFF(dst->shared_blk_write_time,
-						  add->shared_blk_write_time, sub->shared_blk_write_time);
-	INSTR_TIME_ACCUM_DIFF(dst->local_blk_read_time,
-						  add->local_blk_read_time, sub->local_blk_read_time);
-	INSTR_TIME_ACCUM_DIFF(dst->local_blk_write_time,
-						  add->local_blk_write_time, sub->local_blk_write_time);
-	INSTR_TIME_ACCUM_DIFF(dst->temp_blk_read_time,
-						  add->temp_blk_read_time, sub->temp_blk_read_time);
-	INSTR_TIME_ACCUM_DIFF(dst->temp_blk_write_time,
-						  add->temp_blk_write_time, sub->temp_blk_write_time);
-}
-
 /* helper functions for WAL usage accumulation */
 static void
 WalUsageAdd(WalUsage *dst, WalUsage *add)
diff --git a/src/include/executor/instrument.h b/src/include/executor/instrument.h
index 998d151c56a..145217b0df8 100644
--- a/src/include/executor/instrument.h
+++ b/src/include/executor/instrument.h
@@ -145,7 +145,6 @@ typedef struct WorkerNodeInstrumentation
 	NodeInstrumentation instrument[FLEXIBLE_ARRAY_MEMBER];
 } WorkerNodeInstrumentation;
 
-extern PGDLLIMPORT BufferUsage pgBufferUsage;
 extern PGDLLIMPORT WalUsage pgWalUsage;
 extern PGDLLIMPORT InstrStack * pgInstrStack;
 
@@ -189,28 +188,23 @@ extern void InstrAggNode(NodeInstrumentation *dst, NodeInstrumentation *add);
 pg_nodiscard extern Instrumentation *InstrStartParallelQuery(void);
 extern void InstrEndParallelQuery(Instrumentation *instr, BufferUsage *bufusage, WalUsage *walusage);
 extern void InstrAccumParallelQuery(BufferUsage *bufusage, WalUsage *walusage);
-extern void BufferUsageAccumDiff(BufferUsage *dst,
-								 const BufferUsage *add, const BufferUsage *sub);
+extern void BufferUsageAdd(BufferUsage *dst, const BufferUsage *add);
 extern void WalUsageAccumDiff(WalUsage *dst, const WalUsage *add,
 							  const WalUsage *sub);
 
 #define INSTR_BUFUSAGE_INCR(fld) do { \
-		pgBufferUsage.fld++; \
 		if (pgInstrStack) \
 			pgInstrStack->bufusage.fld++; \
 	} while(0)
 #define INSTR_BUFUSAGE_ADD(fld,val) do { \
-		pgBufferUsage.fld += val; \
 		if (pgInstrStack) \
 			pgInstrStack->bufusage.fld += val; \
 	} while(0)
 #define INSTR_BUFUSAGE_TIME_ADD(fld,val) do { \
-	INSTR_TIME_ADD(pgBufferUsage.fld, val); \
 	if (pgInstrStack) \
 		INSTR_TIME_ADD(pgInstrStack->bufusage.fld, val); \
 	} while (0)
 #define INSTR_BUFUSAGE_TIME_ACCUM_DIFF(fld,endval,startval) do { \
-	INSTR_TIME_ACCUM_DIFF(pgBufferUsage.fld, endval, startval); \
 	if (pgInstrStack) \
 		INSTR_TIME_ACCUM_DIFF(pgInstrStack->bufusage.fld, endval, startval); \
 	} while (0)
-- 
2.47.1



  [application/octet-stream] v5-0003-Optimize-measuring-WAL-buffer-usage-through-stack.patch (29.5K, ../../CAP53Pkw85U-aMRzkZ+kRKfCh0pA5vyo=_W16gPK4sirZxiJy=A@mail.gmail.com/4-v5-0003-Optimize-measuring-WAL-buffer-usage-through-stack.patch)
  download | inline diff:
From 03e191d3c8df4a4d8c5b7d2c7b5efb15e57c0ac7 Mon Sep 17 00:00:00 2001
From: Lukas Fittl <[email protected]>
Date: Tue, 9 Sep 2025 02:16:59 -0700
Subject: [PATCH v5 3/6] Optimize measuring WAL/buffer usage through
 stack-based instrumentation

Previously, in order to determine the buffer/WAL usage of a given code
section, we utilized continuously incrementing global counters that get
updated when the actual activity (e.g. shared block read) occurred, and
then calculated a diff when the code section ended. This resulted in a
bottleneck for executor node instrumentation specifically, with the
function BufferUsageAccumDiff showing up in profiles and in some cases
adding up to 10% overhead to an EXPLAIN (ANALYZE, BUFFERS) run.

Instead, introduce a stack-based mechanism, where the actual activity
writes into the current stack entry. In the case of executor nodes, this
means that each node gets its own stack entry that is pushed at
InstrStartNode, and popped at InstrEndNode. Stack entries are zero
initialized (avoiding the diff mechanism) and get added to their parent
entry when they are finalized, i.e. no more modifications can occur.

To correctly handle abort situations, any use of instrumentation stacks
must involve either a top-level Instrumentation struct, and its associated
InstrStart/InstrStop helpers (which use resource owners to handle aborts),
or dedicated PG_TRY/PG_FINALLY calls that ensure the stack is in a
consistent state after an abort.
---
 .../pg_stat_statements/pg_stat_statements.c   | 107 +++++-----
 src/backend/commands/explain.c                |   8 +-
 src/backend/executor/execMain.c               |  41 +++-
 src/backend/executor/execProcnode.c           |  33 +++
 src/backend/executor/instrument.c             | 188 +++++++++++++++---
 src/include/executor/executor.h               |   1 +
 src/include/executor/instrument.h             |  64 +++++-
 src/include/utils/resowner.h                  |   1 +
 8 files changed, 337 insertions(+), 106 deletions(-)

diff --git a/contrib/pg_stat_statements/pg_stat_statements.c b/contrib/pg_stat_statements/pg_stat_statements.c
index 35381765684..2b0db83c69b 100644
--- a/contrib/pg_stat_statements/pg_stat_statements.c
+++ b/contrib/pg_stat_statements/pg_stat_statements.c
@@ -911,21 +911,13 @@ pgss_planner(Query *parse,
 	{
 		instr_time	start;
 		instr_time	duration;
-		BufferUsage bufusage_start,
-					bufusage;
-		WalUsage	walusage_start,
-					walusage;
+		InstrStack	stack = {0};
 
-		/* We need to track buffer usage as the planner can access them. */
-		bufusage_start = pgBufferUsage;
-
-		/*
-		 * Similarly the planner could write some WAL records in some cases
-		 * (e.g. setting a hint bit with those being WAL-logged)
-		 */
-		walusage_start = pgWalUsage;
 		INSTR_TIME_SET_CURRENT(start);
 
+		/* We need to track buffer/WAL usage as the planner can access them. */
+		InstrPushStack(&stack);
+
 		nesting_level++;
 		PG_TRY();
 		{
@@ -938,6 +930,7 @@ pgss_planner(Query *parse,
 		}
 		PG_FINALLY();
 		{
+			InstrPopStack(&stack, true);
 			nesting_level--;
 		}
 		PG_END_TRY();
@@ -945,14 +938,6 @@ pgss_planner(Query *parse,
 		INSTR_TIME_SET_CURRENT(duration);
 		INSTR_TIME_SUBTRACT(duration, start);
 
-		/* calc differences of buffer counters. */
-		memset(&bufusage, 0, sizeof(BufferUsage));
-		BufferUsageAccumDiff(&bufusage, &pgBufferUsage, &bufusage_start);
-
-		/* calc differences of WAL counters. */
-		memset(&walusage, 0, sizeof(WalUsage));
-		WalUsageAccumDiff(&walusage, &pgWalUsage, &walusage_start);
-
 		pgss_store(query_string,
 				   parse->queryId,
 				   parse->stmt_location,
@@ -960,8 +945,8 @@ pgss_planner(Query *parse,
 				   PGSS_PLAN,
 				   INSTR_TIME_GET_MILLISEC(duration),
 				   0,
-				   &bufusage,
-				   &walusage,
+				   &stack.bufusage,
+				   &stack.walusage,
 				   NULL,
 				   NULL,
 				   0,
@@ -1082,6 +1067,13 @@ pgss_ExecutorEnd(QueryDesc *queryDesc)
 	if (queryId != INT64CONST(0) && queryDesc->totaltime &&
 		pgss_enabled(nesting_level))
 	{
+		/*
+		 * Check if stack is initialized - it is not when ExecutorRun wasn't
+		 * called
+		 */
+		const BufferUsage *bufusage = queryDesc->totaltime->stack ? &queryDesc->totaltime->stack->bufusage : NULL;
+		const WalUsage *walusage = queryDesc->totaltime->stack ? &queryDesc->totaltime->stack->walusage : NULL;
+
 		pgss_store(queryDesc->sourceText,
 				   queryId,
 				   queryDesc->plannedstmt->stmt_location,
@@ -1089,8 +1081,8 @@ pgss_ExecutorEnd(QueryDesc *queryDesc)
 				   PGSS_EXEC,
 				   INSTR_TIME_GET_MILLISEC(queryDesc->totaltime->total),
 				   queryDesc->estate->es_total_processed,
-				   &queryDesc->totaltime->bufusage,
-				   &queryDesc->totaltime->walusage,
+				   bufusage,
+				   walusage,
 				   queryDesc->estate->es_jit ? &queryDesc->estate->es_jit->instr : NULL,
 				   NULL,
 				   queryDesc->estate->es_parallel_workers_to_launch,
@@ -1157,14 +1149,10 @@ pgss_ProcessUtility(PlannedStmt *pstmt, const char *queryString,
 		instr_time	start;
 		instr_time	duration;
 		uint64		rows;
-		BufferUsage bufusage_start,
-					bufusage;
-		WalUsage	walusage_start,
-					walusage;
+		InstrStack	stack = {0};
 
-		bufusage_start = pgBufferUsage;
-		walusage_start = pgWalUsage;
 		INSTR_TIME_SET_CURRENT(start);
+		InstrPushStack(&stack);
 
 		nesting_level++;
 		PG_TRY();
@@ -1180,6 +1168,7 @@ pgss_ProcessUtility(PlannedStmt *pstmt, const char *queryString,
 		}
 		PG_FINALLY();
 		{
+			InstrPopStack(&stack, true);
 			nesting_level--;
 		}
 		PG_END_TRY();
@@ -1208,14 +1197,6 @@ pgss_ProcessUtility(PlannedStmt *pstmt, const char *queryString,
 					   qc->commandTag == CMDTAG_REFRESH_MATERIALIZED_VIEW)) ?
 			qc->nprocessed : 0;
 
-		/* calc differences of buffer counters. */
-		memset(&bufusage, 0, sizeof(BufferUsage));
-		BufferUsageAccumDiff(&bufusage, &pgBufferUsage, &bufusage_start);
-
-		/* calc differences of WAL counters. */
-		memset(&walusage, 0, sizeof(WalUsage));
-		WalUsageAccumDiff(&walusage, &pgWalUsage, &walusage_start);
-
 		pgss_store(queryString,
 				   saved_queryId,
 				   saved_stmt_location,
@@ -1223,8 +1204,8 @@ pgss_ProcessUtility(PlannedStmt *pstmt, const char *queryString,
 				   PGSS_EXEC,
 				   INSTR_TIME_GET_MILLISEC(duration),
 				   rows,
-				   &bufusage,
-				   &walusage,
+				   &stack.bufusage,
+				   &stack.walusage,
 				   NULL,
 				   NULL,
 				   0,
@@ -1454,27 +1435,33 @@ pgss_store(const char *query, int64 queryId,
 			}
 		}
 		entry->counters.rows += rows;
-		entry->counters.shared_blks_hit += bufusage->shared_blks_hit;
-		entry->counters.shared_blks_read += bufusage->shared_blks_read;
-		entry->counters.shared_blks_dirtied += bufusage->shared_blks_dirtied;
-		entry->counters.shared_blks_written += bufusage->shared_blks_written;
-		entry->counters.local_blks_hit += bufusage->local_blks_hit;
-		entry->counters.local_blks_read += bufusage->local_blks_read;
-		entry->counters.local_blks_dirtied += bufusage->local_blks_dirtied;
-		entry->counters.local_blks_written += bufusage->local_blks_written;
-		entry->counters.temp_blks_read += bufusage->temp_blks_read;
-		entry->counters.temp_blks_written += bufusage->temp_blks_written;
-		entry->counters.shared_blk_read_time += INSTR_TIME_GET_MILLISEC(bufusage->shared_blk_read_time);
-		entry->counters.shared_blk_write_time += INSTR_TIME_GET_MILLISEC(bufusage->shared_blk_write_time);
-		entry->counters.local_blk_read_time += INSTR_TIME_GET_MILLISEC(bufusage->local_blk_read_time);
-		entry->counters.local_blk_write_time += INSTR_TIME_GET_MILLISEC(bufusage->local_blk_write_time);
-		entry->counters.temp_blk_read_time += INSTR_TIME_GET_MILLISEC(bufusage->temp_blk_read_time);
-		entry->counters.temp_blk_write_time += INSTR_TIME_GET_MILLISEC(bufusage->temp_blk_write_time);
+		if (bufusage)
+		{
+			entry->counters.shared_blks_hit += bufusage->shared_blks_hit;
+			entry->counters.shared_blks_read += bufusage->shared_blks_read;
+			entry->counters.shared_blks_dirtied += bufusage->shared_blks_dirtied;
+			entry->counters.shared_blks_written += bufusage->shared_blks_written;
+			entry->counters.local_blks_hit += bufusage->local_blks_hit;
+			entry->counters.local_blks_read += bufusage->local_blks_read;
+			entry->counters.local_blks_dirtied += bufusage->local_blks_dirtied;
+			entry->counters.local_blks_written += bufusage->local_blks_written;
+			entry->counters.temp_blks_read += bufusage->temp_blks_read;
+			entry->counters.temp_blks_written += bufusage->temp_blks_written;
+			entry->counters.shared_blk_read_time += INSTR_TIME_GET_MILLISEC(bufusage->shared_blk_read_time);
+			entry->counters.shared_blk_write_time += INSTR_TIME_GET_MILLISEC(bufusage->shared_blk_write_time);
+			entry->counters.local_blk_read_time += INSTR_TIME_GET_MILLISEC(bufusage->local_blk_read_time);
+			entry->counters.local_blk_write_time += INSTR_TIME_GET_MILLISEC(bufusage->local_blk_write_time);
+			entry->counters.temp_blk_read_time += INSTR_TIME_GET_MILLISEC(bufusage->temp_blk_read_time);
+			entry->counters.temp_blk_write_time += INSTR_TIME_GET_MILLISEC(bufusage->temp_blk_write_time);
+		}
 		entry->counters.usage += USAGE_EXEC(total_time);
-		entry->counters.wal_records += walusage->wal_records;
-		entry->counters.wal_fpi += walusage->wal_fpi;
-		entry->counters.wal_bytes += walusage->wal_bytes;
-		entry->counters.wal_buffers_full += walusage->wal_buffers_full;
+		if (walusage)
+		{
+			entry->counters.wal_records += walusage->wal_records;
+			entry->counters.wal_fpi += walusage->wal_fpi;
+			entry->counters.wal_bytes += walusage->wal_bytes;
+			entry->counters.wal_buffers_full += walusage->wal_buffers_full;
+		}
 		if (jitusage)
 		{
 			entry->counters.jit_functions += jitusage->created_functions;
diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c
index 1c8d99ea6a8..075000b80c8 100644
--- a/src/backend/commands/explain.c
+++ b/src/backend/commands/explain.c
@@ -2288,9 +2288,9 @@ ExplainNode(PlanState *planstate, List *ancestors,
 
 	/* Show buffer/WAL usage */
 	if (es->buffers && planstate->instrument)
-		show_buffer_usage(es, &planstate->instrument->bufusage);
+		show_buffer_usage(es, &planstate->instrument->stack.bufusage);
 	if (es->wal && planstate->instrument)
-		show_wal_usage(es, &planstate->instrument->walusage);
+		show_wal_usage(es, &planstate->instrument->stack.walusage);
 
 	/* Prepare per-worker buffer/WAL usage */
 	if (es->workers_state && (es->buffers || es->wal) && es->verbose)
@@ -2307,9 +2307,9 @@ ExplainNode(PlanState *planstate, List *ancestors,
 
 			ExplainOpenWorker(n, es);
 			if (es->buffers)
-				show_buffer_usage(es, &instrument->bufusage);
+				show_buffer_usage(es, &instrument->stack.bufusage);
 			if (es->wal)
-				show_wal_usage(es, &instrument->walusage);
+				show_wal_usage(es, &instrument->stack.walusage);
 			ExplainCloseWorker(n, es);
 		}
 	}
diff --git a/src/backend/executor/execMain.c b/src/backend/executor/execMain.c
index 07e2d8e8e26..f2e3762ae68 100644
--- a/src/backend/executor/execMain.c
+++ b/src/backend/executor/execMain.c
@@ -76,6 +76,7 @@ ExecutorCheckPerms_hook_type ExecutorCheckPerms_hook = NULL;
 /* decls for local routines only used within this module */
 static void InitPlan(QueryDesc *queryDesc, int eflags);
 static void CheckValidRowMarkRel(Relation rel, RowMarkType markType);
+static void ExecAccumTriggerInstrumentation(EState *estate);
 static void ExecPostprocessPlan(EState *estate);
 static void ExecEndPlan(PlanState *planstate, EState *estate);
 static void ExecutePlan(QueryDesc *queryDesc,
@@ -329,6 +330,13 @@ standard_ExecutorRun(QueryDesc *queryDesc,
 	 */
 	oldcontext = MemoryContextSwitchTo(estate->es_query_cxt);
 
+	/*
+	 * Start up required top-level instrumentation stack for WAL/buffer
+	 * tracking
+	 */
+	if (!queryDesc->totaltime && (estate->es_instrument & (INSTRUMENT_BUFFERS | INSTRUMENT_WAL)))
+		queryDesc->totaltime = InstrAlloc(estate->es_instrument);
+
 	/* Allow instrumentation of Executor overall runtime */
 	if (queryDesc->totaltime)
 		InstrStart(queryDesc->totaltime);
@@ -383,7 +391,7 @@ standard_ExecutorRun(QueryDesc *queryDesc,
 		dest->rShutdown(dest);
 
 	if (queryDesc->totaltime)
-		InstrStop(queryDesc->totaltime);
+		InstrStop(queryDesc->totaltime, false);
 
 	MemoryContextSwitchTo(oldcontext);
 }
@@ -442,8 +450,19 @@ standard_ExecutorFinish(QueryDesc *queryDesc)
 	if (!(estate->es_top_eflags & EXEC_FLAG_SKIP_TRIGGERS))
 		AfterTriggerEndQuery(estate);
 
+	/*
+	 * Accumulate per node and trigger statistics, and then shut down
+	 * instrumentation stack
+	 */
+	if (queryDesc->totaltime && estate->es_instrument)
+	{
+		ExecAccumNodeInstrumentation(queryDesc->planstate);
+
+		ExecAccumTriggerInstrumentation(estate);
+	}
+
 	if (queryDesc->totaltime)
-		InstrStop(queryDesc->totaltime);
+		InstrStop(queryDesc->totaltime, true);
 
 	MemoryContextSwitchTo(oldcontext);
 
@@ -1480,6 +1499,24 @@ ExecGetAncestorResultRels(EState *estate, ResultRelInfo *resultRelInfo)
 	return resultRelInfo->ri_ancestorResultRels;
 }
 
+static void
+ExecAccumTriggerInstrumentation(EState *estate)
+{
+	List	   *rels = NIL;
+
+	rels = list_concat(rels, estate->es_tuple_routing_result_relations);
+	rels = list_concat(rels, estate->es_opened_result_relations);
+	rels = list_concat(rels, estate->es_trig_target_relations);
+
+	foreach_node(ResultRelInfo, rInfo, rels)
+	{
+		TriggerInstrumentation *ti = rInfo->ri_TrigInstrument;
+
+		if (ti && ti->instr.stack)
+			InstrStackAdd(ti->instr.stack->previous, ti->instr.stack);
+	}
+}
+
 /* ----------------------------------------------------------------
  *		ExecPostprocessPlan
  *
diff --git a/src/backend/executor/execProcnode.c b/src/backend/executor/execProcnode.c
index 1846661b503..a5afe83237d 100644
--- a/src/backend/executor/execProcnode.c
+++ b/src/backend/executor/execProcnode.c
@@ -122,6 +122,7 @@
 static TupleTableSlot *ExecProcNodeFirst(PlanState *node);
 static TupleTableSlot *ExecProcNodeInstr(PlanState *node);
 static bool ExecShutdownNode_walker(PlanState *node, void *context);
+static bool ExecAccumNodeInstrumentation_walker(PlanState *node, void *context);
 
 
 /* ------------------------------------------------------------------------
@@ -828,6 +829,38 @@ ExecShutdownNode_walker(PlanState *node, void *context)
 	return false;
 }
 
+/*
+ * ExecAccumNodeInstrumentation
+ *
+ * Accumulate instrumentation stats from all execution nodes to their respective
+ * parents (or the original parent instrumentation stack).
+ *
+ * This must run after the cleanup done by ExecShutdownNode, and not rely on any
+ * resources cleaned up by it. We also expect shutdown actions to have occurred,
+ * e.g. parallel worker instrumentation to have been added to the leader.
+ */
+void
+ExecAccumNodeInstrumentation(PlanState *node)
+{
+	(void) ExecAccumNodeInstrumentation_walker(node, NULL);
+}
+
+static bool
+ExecAccumNodeInstrumentation_walker(PlanState *node, void *context)
+{
+	if (node == NULL)
+		return false;
+
+	planstate_tree_walker(node, ExecAccumNodeInstrumentation_walker, context);
+
+	if (!node->instrument || !node->instrument->stack.previous)
+		return false;
+
+	InstrStackAdd(node->instrument->stack.previous, &node->instrument->stack);
+
+	return false;
+}
+
 /*
  * ExecSetTupleBound
  *
diff --git a/src/backend/executor/instrument.c b/src/backend/executor/instrument.c
index 39da92739d9..8fca1ddbe64 100644
--- a/src/backend/executor/instrument.c
+++ b/src/backend/executor/instrument.c
@@ -16,15 +16,87 @@
 #include <unistd.h>
 
 #include "executor/instrument.h"
+#include "utils/memutils.h"
+#include "utils/resowner.h"
 
 BufferUsage pgBufferUsage;
 static BufferUsage save_pgBufferUsage;
 WalUsage	pgWalUsage;
+InstrStack *pgInstrStack = NULL;
 static WalUsage save_pgWalUsage;
 
 static void BufferUsageAdd(BufferUsage *dst, const BufferUsage *add);
 static void WalUsageAdd(WalUsage *dst, WalUsage *add);
 
+/*
+ * Use ResourceOwner mechanism to correctly reset pgInstrStack on abort.
+ */
+static void ResOwnerReleaseInstrumentation(Datum res);
+static const ResourceOwnerDesc instrumentation_resowner_desc =
+{
+	.name = "instrumentation",
+	.release_phase = RESOURCE_RELEASE_AFTER_LOCKS,
+	.release_priority = RELEASE_PRIO_INSTRUMENTATION,
+	.ReleaseResource = ResOwnerReleaseInstrumentation,
+	.DebugPrint = NULL,			/* default message is fine */
+};
+
+static inline void
+ResourceOwnerRememberInstrStack(ResourceOwner owner, InstrStack * stack)
+{
+	ResourceOwnerRemember(owner, PointerGetDatum(stack), &instrumentation_resowner_desc);
+}
+
+static inline void
+ResourceOwnerForgetInstrStack(ResourceOwner owner, InstrStack * stack)
+{
+	ResourceOwnerForget(owner, PointerGetDatum(stack), &instrumentation_resowner_desc);
+}
+
+static bool
+StackIsParent(InstrStack * stack, InstrStack * entry)
+{
+	if (entry->previous == NULL)
+		return false;
+
+	if (entry->previous == stack)
+		return true;
+
+	return StackIsParent(stack, entry->previous);
+}
+
+static void
+ResOwnerReleaseInstrumentation(Datum res)
+{
+	InstrStack *stack = (InstrStack *) DatumGetPointer(res);
+
+	if (pgInstrStack)
+	{
+		/*
+		 * Because registered resources are *not* cleaned up in a guaranteed
+		 * order, we may get a child context after we've processed the parent.
+		 * Thus, we only change the stack if its not already a parent of the
+		 * stack being released.
+		 *
+		 * If we already walked up the stack with an earlier resource, simply
+		 * accumulate all collected stats before the abort to the current
+		 * stack.
+		 *
+		 * Note that StackIsParent will recurse as needed, so it is
+		 * inadvisible to use deeply nested stacks.
+		 */
+		if (!StackIsParent(pgInstrStack, stack))
+			InstrPopStack(stack, true);
+		else
+			InstrStackAdd(pgInstrStack, stack);
+	}
+
+	/*
+	 * Ensure long-lived memory is freed now, as we don't expect InstrStop to
+	 * be called
+	 */
+	pfree(stack);
+}
 
 /* General purpose instrumentation handling */
 Instrumentation *
@@ -51,15 +123,31 @@ InstrStart(Instrumentation *instr)
 		!INSTR_TIME_SET_CURRENT_LAZY(instr->starttime))
 		elog(ERROR, "InstrStart called twice in a row");
 
-	if (instr->need_bufusage)
-		instr->bufusage_start = pgBufferUsage;
+	if (instr->need_bufusage || instr->need_walusage)
+	{
+		Assert(CurrentResourceOwner != NULL);
+		instr->owner = CurrentResourceOwner;
+
+		/*
+		 * Allocate the stack resource in a memory context that survives
+		 * during an abort. This will be freed by InstrStop (regular
+		 * execution) or ResOwnerReleaseInstrumentation (abort).
+		 *
+		 * We don't do this in InstrAlloc to avoid leaking when InstrStart +
+		 * InstrStop isn't called.
+		 */
+		if (instr->stack == NULL)
+			instr->stack = MemoryContextAllocZero(CurTransactionContext, sizeof(InstrStack));
+
+		ResourceOwnerEnlarge(instr->owner);
+		ResourceOwnerRememberInstrStack(instr->owner, instr->stack);
 
-	if (instr->need_walusage)
-		instr->walusage_start = pgWalUsage;
+		InstrPushStack(instr->stack);
+	}
 }
 
 void
-InstrStop(Instrumentation *instr)
+InstrStop(Instrumentation *instr, bool finalize)
 {
 	instr_time	endtime;
 
@@ -75,14 +163,28 @@ InstrStop(Instrumentation *instr)
 		INSTR_TIME_SET_ZERO(instr->starttime);
 	}
 
-	/* Add delta of buffer usage since entry to node's totals */
-	if (instr->need_bufusage)
-		BufferUsageAccumDiff(&instr->bufusage,
-							 &pgBufferUsage, &instr->bufusage_start);
-
-	if (instr->need_walusage)
-		WalUsageAccumDiff(&instr->walusage,
-						  &pgWalUsage, &instr->walusage_start);
+	if (instr->need_bufusage || instr->need_walusage)
+	{
+		InstrPopStack(instr->stack, finalize);
+
+		Assert(instr->owner != NULL);
+		ResourceOwnerForgetInstrStack(instr->owner, instr->stack);
+		instr->owner = NULL;
+
+		if (finalize)
+		{
+			/*
+			 * To avoid keeping memory allocated beyond when its needed, copy
+			 * the result to the current memory context, and free it in the
+			 * transaction context.
+			 */
+			InstrStack *stack = palloc(sizeof(InstrStack));
+
+			memcpy(stack, instr->stack, sizeof(InstrStack));
+			pfree(instr->stack);
+			instr->stack = stack;
+		}
+	}
 }
 
 /* Trigger instrumentation handling */
@@ -90,16 +192,16 @@ TriggerInstrumentation *
 InstrAllocTrigger(int n, int instrument_options)
 {
 	TriggerInstrumentation *tginstr = palloc0(n * sizeof(TriggerInstrumentation));
+	bool		need_timer = (instrument_options & INSTRUMENT_TIMER) != 0;
 	bool		need_buffers = (instrument_options & INSTRUMENT_BUFFERS) != 0;
 	bool		need_wal = (instrument_options & INSTRUMENT_WAL) != 0;
-	bool		need_timer = (instrument_options & INSTRUMENT_TIMER) != 0;
 	int			i;
 
 	for (i = 0; i < n; i++)
 	{
+		tginstr[i].instr.need_timer = need_timer;
 		tginstr[i].instr.need_bufusage = need_buffers;
 		tginstr[i].instr.need_walusage = need_wal;
-		tginstr[i].instr.need_timer = need_timer;
 	}
 
 	return tginstr;
@@ -114,7 +216,12 @@ InstrStartTrigger(TriggerInstrumentation *tginstr)
 void
 InstrStopTrigger(TriggerInstrumentation *tginstr, int firings)
 {
-	InstrStop(&tginstr->instr);
+	/*
+	 * This trigger may be called again, so we don't finalize instrumentation
+	 * here. Accumulation to the parent happens at ExecutorFinish through
+	 * ExecAccumTriggerInstrumentation.
+	 */
+	InstrStop(&tginstr->instr, false);
 	tginstr->firings += firings;
 }
 
@@ -150,12 +257,13 @@ InstrStartNode(NodeInstrumentation *instr)
 		!INSTR_TIME_SET_CURRENT_LAZY(instr->starttime))
 		elog(ERROR, "InstrStartNode called twice in a row");
 
-	/* save buffer usage totals at node entry, if needed */
-	if (instr->need_bufusage)
-		instr->bufusage_start = pgBufferUsage;
+	if (instr->need_bufusage || instr->need_walusage)
+	{
+		/* Ensure that we always have a parent, even at the top most node */
+		Assert(pgInstrStack != NULL);
 
-	if (instr->need_walusage)
-		instr->walusage_start = pgWalUsage;
+		InstrPushStack(&instr->stack);
+	}
 }
 
 /* Exit from a plan node */
@@ -180,14 +288,14 @@ InstrStopNode(NodeInstrumentation *instr, double nTuples)
 		INSTR_TIME_SET_ZERO(instr->starttime);
 	}
 
-	/* Add delta of buffer usage since entry to node's totals */
-	if (instr->need_bufusage)
-		BufferUsageAccumDiff(&instr->bufusage,
-							 &pgBufferUsage, &instr->bufusage_start);
+	if (instr->need_bufusage || instr->need_walusage)
+	{
+		/* Ensure that we always have a parent, even at the top most node */
+		Assert(instr->stack.previous != NULL);
 
-	if (instr->need_walusage)
-		WalUsageAccumDiff(&instr->walusage,
-						  &pgWalUsage, &instr->walusage_start);
+		/* Adding to parent is handled by ExecAccumNodeInstrumentation */
+		InstrPopStack(&instr->stack, false);
+	}
 
 	/* Is this the first tuple of this cycle? */
 	if (!instr->running)
@@ -265,13 +373,13 @@ InstrAggNode(NodeInstrumentation *dst, NodeInstrumentation *add)
 
 	/* Add delta of buffer usage since entry to node's totals */
 	if (dst->need_bufusage)
-		BufferUsageAdd(&dst->bufusage, &add->bufusage);
+		BufferUsageAdd(&dst->stack.bufusage, &add->stack.bufusage);
 
 	if (dst->need_walusage)
-		WalUsageAdd(&dst->walusage, &add->walusage);
+		WalUsageAdd(&dst->stack.walusage, &add->stack.walusage);
 }
 
-/* note current values during parallel executor startup */
+/* start instrumentation during parallel executor startup */
 void
 InstrStartParallelQuery(void)
 {
@@ -293,10 +401,28 @@ InstrEndParallelQuery(BufferUsage *bufusage, WalUsage *walusage)
 void
 InstrAccumParallelQuery(BufferUsage *bufusage, WalUsage *walusage)
 {
+	if (pgInstrStack != NULL)
+	{
+		InstrStack *dst = pgInstrStack;
+
+		BufferUsageAdd(&dst->bufusage, bufusage);
+		WalUsageAdd(&dst->walusage, walusage);
+	}
+
 	BufferUsageAdd(&pgBufferUsage, bufusage);
 	WalUsageAdd(&pgWalUsage, walusage);
 }
 
+void
+InstrStackAdd(InstrStack * dst, InstrStack * add)
+{
+	Assert(dst != NULL);
+	Assert(add != NULL);
+
+	BufferUsageAdd(&dst->bufusage, &add->bufusage);
+	WalUsageAdd(&dst->walusage, &add->walusage);
+}
+
 /* dst += add */
 static void
 BufferUsageAdd(BufferUsage *dst, const BufferUsage *add)
diff --git a/src/include/executor/executor.h b/src/include/executor/executor.h
index 5929aabc353..dc956388f7d 100644
--- a/src/include/executor/executor.h
+++ b/src/include/executor/executor.h
@@ -300,6 +300,7 @@ extern void ExecSetExecProcNode(PlanState *node, ExecProcNodeMtd function);
 extern Node *MultiExecProcNode(PlanState *node);
 extern void ExecEndNode(PlanState *node);
 extern void ExecShutdownNode(PlanState *node);
+extern void ExecAccumNodeInstrumentation(PlanState *node);
 extern void ExecSetTupleBound(int64 tuples_needed, PlanState *child_node);
 
 
diff --git a/src/include/executor/instrument.h b/src/include/executor/instrument.h
index 16688b5fdb4..0bf1ef548d6 100644
--- a/src/include/executor/instrument.h
+++ b/src/include/executor/instrument.h
@@ -67,12 +67,25 @@ typedef enum InstrumentOption
 	INSTRUMENT_ALL = PG_INT32_MAX
 } InstrumentOption;
 
+/* Stack of WAL/buffer usage used for per-node instrumentation */
+typedef struct InstrStack
+{
+	struct InstrStack *previous;
+	BufferUsage bufusage;
+	WalUsage	walusage;
+}			InstrStack;
+
 /*
  * General purpose instrumentation that can capture time and WAL/buffer usage
  *
  * Initialized through InstrAlloc, followed by one or more calls to a pair of
  * InstrStart/InstrStop (activity is measured inbetween).
+ *
+ * Uses resource owner mechanism for handling aborts, as such, the caller *must* not exit out of
+ * top level transaction between InstrStart/InstrStop calls in regular execution. If this is needed,
+ * directly use InstrPushStack/InstrPopStack in a PG_TRY/PG_FINALLY block instead.
  */
+struct ResourceOwnerData;
 typedef struct Instrumentation
 {
 	/* Parameters set at creation: */
@@ -81,12 +94,10 @@ typedef struct Instrumentation
 	bool		need_walusage;	/* true if we need WAL usage data */
 	/* Internal state keeping: */
 	instr_time	starttime;		/* start time of last InstrStart */
-	BufferUsage bufusage_start; /* buffer usage at start */
-	WalUsage	walusage_start; /* WAL usage at start */
 	/* Accumulated statistics: */
 	instr_time	total;			/* total runtime */
-	BufferUsage bufusage;		/* total buffer usage */
-	WalUsage	walusage;		/* total WAL usage */
+	InstrStack *stack;			/* stack tracking buffer/WAL usage */
+	struct ResourceOwnerData *owner;
 } Instrumentation;
 
 /* Trigger instrumentation */
@@ -99,6 +110,10 @@ typedef struct TriggerInstrumentation
 
 /*
  * Specialized instrumentation for per-node execution statistics
+ *
+ * Requires use of an outer InstrStart/InstrStop to handle the stack used for WAL/buffer
+ * usage statistics, and relies on it for managing aborts. Solely intended for
+ * the executor and anyone reporting about its activities (e.g. EXPLAIN ANALYZE).
  */
 typedef struct NodeInstrumentation
 {
@@ -113,8 +128,6 @@ typedef struct NodeInstrumentation
 	instr_time	counter;		/* accumulated runtime for this node */
 	instr_time	firsttuple;		/* time for first tuple of this cycle */
 	double		tuplecount;		/* # of tuples emitted so far this cycle */
-	BufferUsage bufusage_start; /* buffer usage at start */
-	WalUsage	walusage_start; /* WAL usage at start */
 	/* Accumulated statistics across all completed cycles: */
 	instr_time	startup;		/* total startup time */
 	instr_time	total;			/* total time */
@@ -123,8 +136,7 @@ typedef struct NodeInstrumentation
 	double		nloops;			/* # of run cycles for this node */
 	double		nfiltered1;		/* # of tuples removed by scanqual or joinqual */
 	double		nfiltered2;		/* # of tuples removed by "other" quals */
-	BufferUsage bufusage;		/* total buffer usage */
-	WalUsage	walusage;		/* total WAL usage */
+	InstrStack	stack;			/* stack tracking buffer/WAL usage */
 } NodeInstrumentation;
 
 typedef struct WorkerNodeInstrumentation
@@ -135,10 +147,31 @@ typedef struct WorkerNodeInstrumentation
 
 extern PGDLLIMPORT BufferUsage pgBufferUsage;
 extern PGDLLIMPORT WalUsage pgWalUsage;
+extern PGDLLIMPORT InstrStack * pgInstrStack;
+
+extern void InstrStackAdd(InstrStack * dst, InstrStack * add);
+
+static inline void
+InstrPushStack(InstrStack * stack)
+{
+	stack->previous = pgInstrStack;
+	pgInstrStack = stack;
+}
+
+static inline void
+InstrPopStack(InstrStack * stack, bool add_to_parent)
+{
+	Assert(stack != NULL);
+
+	pgInstrStack = stack->previous;
+
+	if (pgInstrStack && add_to_parent)
+		InstrStackAdd(pgInstrStack, stack);
+}
 
 extern Instrumentation *InstrAlloc(int instrument_options);
 extern void InstrStart(Instrumentation *instr);
-extern void InstrStop(Instrumentation *instr);
+extern void InstrStop(Instrumentation *instr, bool finalize);
 
 extern TriggerInstrumentation *InstrAllocTrigger(int n, int instrument_options);
 extern void InstrStartTrigger(TriggerInstrumentation *tginstr);
@@ -163,21 +196,34 @@ extern void WalUsageAccumDiff(WalUsage *dst, const WalUsage *add,
 
 #define INSTR_BUFUSAGE_INCR(fld) do { \
 		pgBufferUsage.fld++; \
+		if (pgInstrStack) \
+			pgInstrStack->bufusage.fld++; \
 	} while(0)
 #define INSTR_BUFUSAGE_ADD(fld,val) do { \
 		pgBufferUsage.fld += val; \
+		if (pgInstrStack) \
+			pgInstrStack->bufusage.fld += val; \
 	} while(0)
 #define INSTR_BUFUSAGE_TIME_ADD(fld,val) do { \
 	INSTR_TIME_ADD(pgBufferUsage.fld, val); \
+	if (pgInstrStack) \
+		INSTR_TIME_ADD(pgInstrStack->bufusage.fld, val); \
 	} while (0)
 #define INSTR_BUFUSAGE_TIME_ACCUM_DIFF(fld,endval,startval) do { \
 	INSTR_TIME_ACCUM_DIFF(pgBufferUsage.fld, endval, startval); \
+	if (pgInstrStack) \
+		INSTR_TIME_ACCUM_DIFF(pgInstrStack->bufusage.fld, endval, startval); \
 	} while (0)
+
 #define INSTR_WALUSAGE_INCR(fld) do { \
 		pgWalUsage.fld++; \
+		if (pgInstrStack) \
+			pgInstrStack->walusage.fld++; \
 	} while(0)
 #define INSTR_WALUSAGE_ADD(fld,val) do { \
 		pgWalUsage.fld += val; \
+		if (pgInstrStack) \
+			pgInstrStack->walusage.fld += val; \
 	} while(0)
 
 #endif							/* INSTRUMENT_H */
diff --git a/src/include/utils/resowner.h b/src/include/utils/resowner.h
index eb6033b4fdb..5463bc921f0 100644
--- a/src/include/utils/resowner.h
+++ b/src/include/utils/resowner.h
@@ -75,6 +75,7 @@ typedef uint32 ResourceReleasePriority;
 #define RELEASE_PRIO_SNAPSHOT_REFS			500
 #define RELEASE_PRIO_FILES					600
 #define RELEASE_PRIO_WAITEVENTSETS			700
+#define RELEASE_PRIO_INSTRUMENTATION		800
 
 /* 0 is considered invalid */
 #define RELEASE_PRIO_FIRST					1
-- 
2.47.1



  [application/octet-stream] v5-0001-Replace-direct-changes-of-pgBufferUsage-pgWalUsag.patch (9.1K, ../../CAP53Pkw85U-aMRzkZ+kRKfCh0pA5vyo=_W16gPK4sirZxiJy=A@mail.gmail.com/5-v5-0001-Replace-direct-changes-of-pgBufferUsage-pgWalUsag.patch)
  download | inline diff:
From 66fbd508206de4b010d9cefb159ab20a93923bd6 Mon Sep 17 00:00:00 2001
From: Lukas Fittl <[email protected]>
Date: Sun, 31 Aug 2025 16:34:42 -0700
Subject: [PATCH v5 1/6] Replace direct changes of pgBufferUsage/pgWalUsage
 with INSTR_* macros

This encapsulates the ownership of these globals better, and will allow
a subsequent refactoring.
---
 src/backend/access/transam/xlog.c      | 10 +++++-----
 src/backend/storage/buffer/bufmgr.c    | 24 ++++++++++++------------
 src/backend/storage/buffer/localbuf.c  |  6 +++---
 src/backend/storage/file/buffile.c     |  8 ++++----
 src/backend/utils/activity/pgstat_io.c |  8 ++++----
 src/include/executor/instrument.h      | 19 +++++++++++++++++++
 6 files changed, 47 insertions(+), 28 deletions(-)

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 81dc86847c0..ac0cac15948 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -1081,10 +1081,10 @@ XLogInsertRecord(XLogRecData *rdata,
 	/* Report WAL traffic to the instrumentation. */
 	if (inserted)
 	{
-		pgWalUsage.wal_bytes += rechdr->xl_tot_len;
-		pgWalUsage.wal_records++;
-		pgWalUsage.wal_fpi += num_fpi;
-		pgWalUsage.wal_fpi_bytes += fpi_bytes;
+		INSTR_WALUSAGE_ADD(wal_bytes, rechdr->xl_tot_len);
+		INSTR_WALUSAGE_INCR(wal_records);
+		INSTR_WALUSAGE_ADD(wal_fpi, num_fpi);
+		INSTR_WALUSAGE_ADD(wal_fpi_bytes, fpi_bytes);
 
 		/* Required for the flush of pending stats WAL data */
 		pgstat_report_fixed = true;
@@ -2064,7 +2064,7 @@ AdvanceXLInsertBuffer(XLogRecPtr upto, TimeLineID tli, bool opportunistic)
 					WriteRqst.Flush = 0;
 					XLogWrite(WriteRqst, tli, false);
 					LWLockRelease(WALWriteLock);
-					pgWalUsage.wal_buffers_full++;
+					INSTR_WALUSAGE_INCR(wal_buffers_full);
 					TRACE_POSTGRESQL_WAL_BUFFER_WRITE_DIRTY_DONE();
 
 					/*
diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c
index a036c2aa275..0b863ee6eaf 100644
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -800,7 +800,7 @@ ReadRecentBuffer(RelFileLocator rlocator, ForkNumber forkNum, BlockNumber blockN
 		{
 			PinLocalBuffer(bufHdr, true);
 
-			pgBufferUsage.local_blks_hit++;
+			INSTR_BUFUSAGE_INCR(local_blks_hit);
 
 			return true;
 		}
@@ -821,7 +821,7 @@ ReadRecentBuffer(RelFileLocator rlocator, ForkNumber forkNum, BlockNumber blockN
 		{
 			if (BufferTagsEqual(&tag, &bufHdr->tag))
 			{
-				pgBufferUsage.shared_blks_hit++;
+				INSTR_BUFUSAGE_INCR(shared_blks_hit);
 				return true;
 			}
 			UnpinBuffer(bufHdr);
@@ -1222,14 +1222,14 @@ PinBufferForBlock(Relation rel,
 	{
 		bufHdr = LocalBufferAlloc(smgr, forkNum, blockNum, foundPtr);
 		if (*foundPtr)
-			pgBufferUsage.local_blks_hit++;
+			INSTR_BUFUSAGE_INCR(local_blks_hit);
 	}
 	else
 	{
 		bufHdr = BufferAlloc(smgr, persistence, forkNum, blockNum,
 							 strategy, foundPtr, io_context);
 		if (*foundPtr)
-			pgBufferUsage.shared_blks_hit++;
+			INSTR_BUFUSAGE_INCR(shared_blks_hit);
 	}
 	if (rel)
 	{
@@ -1963,9 +1963,9 @@ AsyncReadBuffers(ReadBuffersOperation *operation, int *nblocks_progress)
 										  true);
 
 		if (persistence == RELPERSISTENCE_TEMP)
-			pgBufferUsage.local_blks_hit += 1;
+			INSTR_BUFUSAGE_INCR(local_blks_hit);
 		else
-			pgBufferUsage.shared_blks_hit += 1;
+			INSTR_BUFUSAGE_INCR(shared_blks_hit);
 
 		if (operation->rel)
 			pgstat_count_buffer_hit(operation->rel);
@@ -2033,9 +2033,9 @@ AsyncReadBuffers(ReadBuffersOperation *operation, int *nblocks_progress)
 								io_start, 1, io_buffers_len * BLCKSZ);
 
 		if (persistence == RELPERSISTENCE_TEMP)
-			pgBufferUsage.local_blks_read += io_buffers_len;
+			INSTR_BUFUSAGE_ADD(local_blks_read, io_buffers_len);
 		else
-			pgBufferUsage.shared_blks_read += io_buffers_len;
+			INSTR_BUFUSAGE_ADD(shared_blks_read, io_buffers_len);
 
 		/*
 		 * Track vacuum cost when issuing IO, not after waiting for it.
@@ -2919,7 +2919,7 @@ ExtendBufferedRelShared(BufferManagerRelation bmr,
 		TerminateBufferIO(buf_hdr, false, BM_VALID, true, false);
 	}
 
-	pgBufferUsage.shared_blks_written += extend_by;
+	INSTR_BUFUSAGE_ADD(shared_blks_written, extend_by);
 
 	*extended_by = extend_by;
 
@@ -3079,7 +3079,7 @@ MarkBufferDirty(Buffer buffer)
 	 */
 	if (!(old_buf_state & BM_DIRTY))
 	{
-		pgBufferUsage.shared_blks_dirtied++;
+		INSTR_BUFUSAGE_INCR(shared_blks_dirtied);
 		if (VacuumCostActive)
 			VacuumCostBalance += VacuumCostPageDirty;
 	}
@@ -4489,7 +4489,7 @@ FlushBuffer(BufferDesc *buf, SMgrRelation reln, IOObject io_object,
 	pgstat_count_io_op_time(IOOBJECT_RELATION, io_context,
 							IOOP_WRITE, io_start, 1, BLCKSZ);
 
-	pgBufferUsage.shared_blks_written++;
+	INSTR_BUFUSAGE_INCR(shared_blks_written);
 
 	/*
 	 * Mark the buffer as clean (unless BM_JUST_DIRTIED has become set) and
@@ -5648,7 +5648,7 @@ MarkBufferDirtyHint(Buffer buffer, bool buffer_std)
 
 		if (dirtied)
 		{
-			pgBufferUsage.shared_blks_dirtied++;
+			INSTR_BUFUSAGE_INCR(shared_blks_dirtied);
 			if (VacuumCostActive)
 				VacuumCostBalance += VacuumCostPageDirty;
 		}
diff --git a/src/backend/storage/buffer/localbuf.c b/src/backend/storage/buffer/localbuf.c
index f6e2b1aa288..775726f4c9d 100644
--- a/src/backend/storage/buffer/localbuf.c
+++ b/src/backend/storage/buffer/localbuf.c
@@ -217,7 +217,7 @@ FlushLocalBuffer(BufferDesc *bufHdr, SMgrRelation reln)
 	/* Mark not-dirty */
 	TerminateLocalBufferIO(bufHdr, true, 0, false);
 
-	pgBufferUsage.local_blks_written++;
+	INSTR_BUFUSAGE_INCR(local_blks_written);
 }
 
 static Buffer
@@ -478,7 +478,7 @@ ExtendBufferedRelLocal(BufferManagerRelation bmr,
 
 	*extended_by = extend_by;
 
-	pgBufferUsage.local_blks_written += extend_by;
+	INSTR_BUFUSAGE_ADD(local_blks_written, extend_by);
 
 	return first_block;
 }
@@ -509,7 +509,7 @@ MarkLocalBufferDirty(Buffer buffer)
 	buf_state = pg_atomic_read_u32(&bufHdr->state);
 
 	if (!(buf_state & BM_DIRTY))
-		pgBufferUsage.local_blks_dirtied++;
+		INSTR_BUFUSAGE_INCR(local_blks_dirtied);
 
 	buf_state |= BM_DIRTY;
 
diff --git a/src/backend/storage/file/buffile.c b/src/backend/storage/file/buffile.c
index ddf3a410d6f..1726b3a3b33 100644
--- a/src/backend/storage/file/buffile.c
+++ b/src/backend/storage/file/buffile.c
@@ -474,13 +474,13 @@ BufFileLoadBuffer(BufFile *file)
 	if (track_io_timing)
 	{
 		INSTR_TIME_SET_CURRENT(io_time);
-		INSTR_TIME_ACCUM_DIFF(pgBufferUsage.temp_blk_read_time, io_time, io_start);
+		INSTR_BUFUSAGE_TIME_ACCUM_DIFF(temp_blk_read_time, io_time, io_start);
 	}
 
 	/* we choose not to advance curOffset here */
 
 	if (file->nbytes > 0)
-		pgBufferUsage.temp_blks_read++;
+		INSTR_BUFUSAGE_INCR(temp_blks_read);
 }
 
 /*
@@ -548,13 +548,13 @@ BufFileDumpBuffer(BufFile *file)
 		if (track_io_timing)
 		{
 			INSTR_TIME_SET_CURRENT(io_time);
-			INSTR_TIME_ACCUM_DIFF(pgBufferUsage.temp_blk_write_time, io_time, io_start);
+			INSTR_BUFUSAGE_TIME_ACCUM_DIFF(temp_blk_write_time, io_time, io_start);
 		}
 
 		file->curOffset += bytestowrite;
 		wpos += bytestowrite;
 
-		pgBufferUsage.temp_blks_written++;
+		INSTR_BUFUSAGE_INCR(temp_blks_written);
 	}
 	file->dirty = false;
 
diff --git a/src/backend/utils/activity/pgstat_io.c b/src/backend/utils/activity/pgstat_io.c
index 28de24538dc..9e7a88ec0d0 100644
--- a/src/backend/utils/activity/pgstat_io.c
+++ b/src/backend/utils/activity/pgstat_io.c
@@ -135,17 +135,17 @@ pgstat_count_io_op_time(IOObject io_object, IOContext io_context, IOOp io_op,
 			{
 				pgstat_count_buffer_write_time(INSTR_TIME_GET_MICROSEC(io_time));
 				if (io_object == IOOBJECT_RELATION)
-					INSTR_TIME_ADD(pgBufferUsage.shared_blk_write_time, io_time);
+					INSTR_BUFUSAGE_TIME_ADD(shared_blk_write_time, io_time);
 				else if (io_object == IOOBJECT_TEMP_RELATION)
-					INSTR_TIME_ADD(pgBufferUsage.local_blk_write_time, io_time);
+					INSTR_BUFUSAGE_TIME_ADD(local_blk_write_time, io_time);
 			}
 			else if (io_op == IOOP_READ)
 			{
 				pgstat_count_buffer_read_time(INSTR_TIME_GET_MICROSEC(io_time));
 				if (io_object == IOOBJECT_RELATION)
-					INSTR_TIME_ADD(pgBufferUsage.shared_blk_read_time, io_time);
+					INSTR_BUFUSAGE_TIME_ADD(shared_blk_read_time, io_time);
 				else if (io_object == IOOBJECT_TEMP_RELATION)
-					INSTR_TIME_ADD(pgBufferUsage.local_blk_read_time, io_time);
+					INSTR_BUFUSAGE_TIME_ADD(local_blk_read_time, io_time);
 			}
 		}
 
diff --git a/src/include/executor/instrument.h b/src/include/executor/instrument.h
index 9759f3ea5d8..64e91373b5d 100644
--- a/src/include/executor/instrument.h
+++ b/src/include/executor/instrument.h
@@ -119,4 +119,23 @@ extern void BufferUsageAccumDiff(BufferUsage *dst,
 extern void WalUsageAccumDiff(WalUsage *dst, const WalUsage *add,
 							  const WalUsage *sub);
 
+#define INSTR_BUFUSAGE_INCR(fld) do { \
+		pgBufferUsage.fld++; \
+	} while(0)
+#define INSTR_BUFUSAGE_ADD(fld,val) do { \
+		pgBufferUsage.fld += val; \
+	} while(0)
+#define INSTR_BUFUSAGE_TIME_ADD(fld,val) do { \
+	INSTR_TIME_ADD(pgBufferUsage.fld, val); \
+	} while (0)
+#define INSTR_BUFUSAGE_TIME_ACCUM_DIFF(fld,endval,startval) do { \
+	INSTR_TIME_ACCUM_DIFF(pgBufferUsage.fld, endval, startval); \
+	} while (0)
+#define INSTR_WALUSAGE_INCR(fld) do { \
+		pgWalUsage.fld++; \
+	} while(0)
+#define INSTR_WALUSAGE_ADD(fld,val) do { \
+		pgWalUsage.fld += val; \
+	} while(0)
+
 #endif							/* INSTRUMENT_H */
-- 
2.47.1



  [application/octet-stream] v5-0002-Instrumentation-Separate-per-node-and-trigger-log.patch (27.5K, ../../CAP53Pkw85U-aMRzkZ+kRKfCh0pA5vyo=_W16gPK4sirZxiJy=A@mail.gmail.com/6-v5-0002-Instrumentation-Separate-per-node-and-trigger-log.patch)
  download | inline diff:
From 8f905c051340d00e2b0545763ee6a3fd2ac137ff Mon Sep 17 00:00:00 2001
From: Lukas Fittl <[email protected]>
Date: Sat, 1 Mar 2025 19:31:30 -0800
Subject: [PATCH v5 2/6] Instrumentation: Separate per-node and trigger logic
 from other uses

Previously different places (e.g. query "total time") were repurposing
the Instrumentation struct initially introduced for capturing per-node
statistics during execution. This overuse of the same struct is confusing,
e.g. by cluttering calls of InstrStartNode/InstrStopNode in unrelated
code paths, and prevents future refactorings.

Instead, simplify the Instrumentation struct to only track time and
WAL/buffer usage. Similarly, drop the use of InstrEndLoop outside of
per-node instrumentation - these calls were added without any apparent
benefit since the relevant fields were never read.

Introduce the NodeInstrumentation struct to carry forward the per-node
instrumentation information, and introduce TriggerInstrumentation to
capture trigger timing and firings (previously counted in "ntuples").
WorkerInstrumentation is renamed to WorkerNodeInstrumentation for clarity.

In passing, drop the "n" argument to InstrAlloc, as all remaining callers
need exactly one Instrumentation struct.
---
 contrib/auto_explain/auto_explain.c           |   8 +-
 .../pg_stat_statements/pg_stat_statements.c   |   8 +-
 contrib/postgres_fdw/postgres_fdw.c           |   2 +-
 src/backend/commands/explain.c                |  27 ++--
 src/backend/commands/trigger.c                |  22 ++--
 src/backend/executor/execMain.c               |  10 +-
 src/backend/executor/execParallel.c           |  24 ++--
 src/backend/executor/execProcnode.c           |   4 +-
 src/backend/executor/instrument.c             | 123 ++++++++++++++----
 src/include/executor/instrument.h             |  66 ++++++++--
 src/include/nodes/execnodes.h                 |   8 +-
 src/tools/pgindent/typedefs.list              |   4 +-
 12 files changed, 210 insertions(+), 96 deletions(-)

diff --git a/contrib/auto_explain/auto_explain.c b/contrib/auto_explain/auto_explain.c
index e856cd35a6f..39bf2543b70 100644
--- a/contrib/auto_explain/auto_explain.c
+++ b/contrib/auto_explain/auto_explain.c
@@ -315,7 +315,7 @@ explain_ExecutorStart(QueryDesc *queryDesc, int eflags)
 			MemoryContext oldcxt;
 
 			oldcxt = MemoryContextSwitchTo(queryDesc->estate->es_query_cxt);
-			queryDesc->totaltime = InstrAlloc(1, INSTRUMENT_ALL, false);
+			queryDesc->totaltime = InstrAlloc(INSTRUMENT_ALL);
 			MemoryContextSwitchTo(oldcxt);
 		}
 	}
@@ -381,12 +381,6 @@ explain_ExecutorEnd(QueryDesc *queryDesc)
 		 */
 		oldcxt = MemoryContextSwitchTo(queryDesc->estate->es_query_cxt);
 
-		/*
-		 * Make sure stats accumulation is done.  (Note: it's okay if several
-		 * levels of hook all do this.)
-		 */
-		InstrEndLoop(queryDesc->totaltime);
-
 		/* Log plan if duration is exceeded. */
 		msec = INSTR_TIME_GET_MILLISEC(queryDesc->totaltime->total);
 		if (msec >= auto_explain_log_min_duration)
diff --git a/contrib/pg_stat_statements/pg_stat_statements.c b/contrib/pg_stat_statements/pg_stat_statements.c
index adc493e9850..35381765684 100644
--- a/contrib/pg_stat_statements/pg_stat_statements.c
+++ b/contrib/pg_stat_statements/pg_stat_statements.c
@@ -1023,7 +1023,7 @@ pgss_ExecutorStart(QueryDesc *queryDesc, int eflags)
 			MemoryContext oldcxt;
 
 			oldcxt = MemoryContextSwitchTo(queryDesc->estate->es_query_cxt);
-			queryDesc->totaltime = InstrAlloc(1, INSTRUMENT_ALL, false);
+			queryDesc->totaltime = InstrAlloc(INSTRUMENT_ALL);
 			MemoryContextSwitchTo(oldcxt);
 		}
 	}
@@ -1082,12 +1082,6 @@ pgss_ExecutorEnd(QueryDesc *queryDesc)
 	if (queryId != INT64CONST(0) && queryDesc->totaltime &&
 		pgss_enabled(nesting_level))
 	{
-		/*
-		 * Make sure stats accumulation is done.  (Note: it's okay if several
-		 * levels of hook all do this.)
-		 */
-		InstrEndLoop(queryDesc->totaltime);
-
 		pgss_store(queryDesc->sourceText,
 				   queryId,
 				   queryDesc->plannedstmt->stmt_location,
diff --git a/contrib/postgres_fdw/postgres_fdw.c b/contrib/postgres_fdw/postgres_fdw.c
index 3572689e33b..8032976ade3 100644
--- a/contrib/postgres_fdw/postgres_fdw.c
+++ b/contrib/postgres_fdw/postgres_fdw.c
@@ -2778,7 +2778,7 @@ postgresIterateDirectModify(ForeignScanState *node)
 	if (!resultRelInfo->ri_projectReturning)
 	{
 		TupleTableSlot *slot = node->ss.ss_ScanTupleSlot;
-		Instrumentation *instr = node->ss.ps.instrument;
+		NodeInstrumentation *instr = node->ss.ps.instrument;
 
 		Assert(!dmstate->has_returning);
 
diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c
index b7bb111688c..1c8d99ea6a8 100644
--- a/src/backend/commands/explain.c
+++ b/src/backend/commands/explain.c
@@ -1099,18 +1099,15 @@ report_triggers(ResultRelInfo *rInfo, bool show_relname, ExplainState *es)
 	for (nt = 0; nt < rInfo->ri_TrigDesc->numtriggers; nt++)
 	{
 		Trigger    *trig = rInfo->ri_TrigDesc->triggers + nt;
-		Instrumentation *instr = rInfo->ri_TrigInstrument + nt;
+		TriggerInstrumentation *tginstr = rInfo->ri_TrigInstrument + nt;
 		char	   *relname;
 		char	   *conname = NULL;
 
-		/* Must clean up instrumentation state */
-		InstrEndLoop(instr);
-
 		/*
 		 * We ignore triggers that were never invoked; they likely aren't
 		 * relevant to the current query type.
 		 */
-		if (instr->ntuples == 0)
+		if (tginstr->firings == 0)
 			continue;
 
 		ExplainOpenGroup("Trigger", NULL, true, es);
@@ -1135,11 +1132,11 @@ report_triggers(ResultRelInfo *rInfo, bool show_relname, ExplainState *es)
 			if (show_relname)
 				appendStringInfo(es->str, " on %s", relname);
 			if (es->timing)
-				appendStringInfo(es->str, ": time=%.3f calls=%.0f\n",
-								 INSTR_TIME_GET_MILLISEC(instr->total),
-								 instr->ntuples);
+				appendStringInfo(es->str, ": time=%.3f calls=%d\n",
+								 INSTR_TIME_GET_MILLISEC(tginstr->instr.total),
+								 tginstr->firings);
 			else
-				appendStringInfo(es->str, ": calls=%.0f\n", instr->ntuples);
+				appendStringInfo(es->str, ": calls=%d\n", tginstr->firings);
 		}
 		else
 		{
@@ -1149,9 +1146,9 @@ report_triggers(ResultRelInfo *rInfo, bool show_relname, ExplainState *es)
 			ExplainPropertyText("Relation", relname, es);
 			if (es->timing)
 				ExplainPropertyFloat("Time", "ms",
-									 INSTR_TIME_GET_MILLISEC(instr->total), 3,
+									 INSTR_TIME_GET_MILLISEC(tginstr->instr.total), 3,
 									 es);
-			ExplainPropertyFloat("Calls", NULL, instr->ntuples, 0, es);
+			ExplainPropertyInteger("Calls", NULL, tginstr->firings, es);
 		}
 
 		if (conname)
@@ -1891,11 +1888,11 @@ ExplainNode(PlanState *planstate, List *ancestors,
 	/* prepare per-worker general execution details */
 	if (es->workers_state && es->verbose)
 	{
-		WorkerInstrumentation *w = planstate->worker_instrument;
+		WorkerNodeInstrumentation *w = planstate->worker_instrument;
 
 		for (int n = 0; n < w->num_workers; n++)
 		{
-			Instrumentation *instrument = &w->instrument[n];
+			NodeInstrumentation *instrument = &w->instrument[n];
 			double		nloops = instrument->nloops;
 			double		startup_ms;
 			double		total_ms;
@@ -2298,11 +2295,11 @@ ExplainNode(PlanState *planstate, List *ancestors,
 	/* Prepare per-worker buffer/WAL usage */
 	if (es->workers_state && (es->buffers || es->wal) && es->verbose)
 	{
-		WorkerInstrumentation *w = planstate->worker_instrument;
+		WorkerNodeInstrumentation *w = planstate->worker_instrument;
 
 		for (int n = 0; n < w->num_workers; n++)
 		{
-			Instrumentation *instrument = &w->instrument[n];
+			NodeInstrumentation *instrument = &w->instrument[n];
 			double		nloops = instrument->nloops;
 
 			if (nloops <= 0)
diff --git a/src/backend/commands/trigger.c b/src/backend/commands/trigger.c
index d30fda660eb..47dfd77fb94 100644
--- a/src/backend/commands/trigger.c
+++ b/src/backend/commands/trigger.c
@@ -90,7 +90,7 @@ static bool TriggerEnabled(EState *estate, ResultRelInfo *relinfo,
 static HeapTuple ExecCallTriggerFunc(TriggerData *trigdata,
 									 int tgindx,
 									 FmgrInfo *finfo,
-									 Instrumentation *instr,
+									 TriggerInstrumentation *instr,
 									 MemoryContext per_tuple_context);
 static void AfterTriggerSaveEvent(EState *estate, ResultRelInfo *relinfo,
 								  ResultRelInfo *src_partinfo,
@@ -2309,7 +2309,7 @@ static HeapTuple
 ExecCallTriggerFunc(TriggerData *trigdata,
 					int tgindx,
 					FmgrInfo *finfo,
-					Instrumentation *instr,
+					TriggerInstrumentation *instr,
 					MemoryContext per_tuple_context)
 {
 	LOCAL_FCINFO(fcinfo, 0);
@@ -2344,7 +2344,7 @@ ExecCallTriggerFunc(TriggerData *trigdata,
 	 * If doing EXPLAIN ANALYZE, start charging time to this trigger.
 	 */
 	if (instr)
-		InstrStartNode(instr + tgindx);
+		InstrStartTrigger(instr + tgindx);
 
 	/*
 	 * Do the function evaluation in the per-tuple memory context, so that
@@ -2389,10 +2389,10 @@ ExecCallTriggerFunc(TriggerData *trigdata,
 
 	/*
 	 * If doing EXPLAIN ANALYZE, stop charging time to this trigger, and count
-	 * one "tuple returned" (really the number of firings).
+	 * the firing of the trigger.
 	 */
 	if (instr)
-		InstrStopNode(instr + tgindx, 1);
+		InstrStopTrigger(instr + tgindx, 1);
 
 	return (HeapTuple) DatumGetPointer(result);
 }
@@ -3947,7 +3947,7 @@ static void AfterTriggerExecute(EState *estate,
 								ResultRelInfo *dst_relInfo,
 								TriggerDesc *trigdesc,
 								FmgrInfo *finfo,
-								Instrumentation *instr,
+								TriggerInstrumentation *instr,
 								MemoryContext per_tuple_context,
 								TupleTableSlot *trig_tuple_slot1,
 								TupleTableSlot *trig_tuple_slot2);
@@ -4340,7 +4340,7 @@ AfterTriggerExecute(EState *estate,
 					ResultRelInfo *src_relInfo,
 					ResultRelInfo *dst_relInfo,
 					TriggerDesc *trigdesc,
-					FmgrInfo *finfo, Instrumentation *instr,
+					FmgrInfo *finfo, TriggerInstrumentation *instr,
 					MemoryContext per_tuple_context,
 					TupleTableSlot *trig_tuple_slot1,
 					TupleTableSlot *trig_tuple_slot2)
@@ -4381,7 +4381,7 @@ AfterTriggerExecute(EState *estate,
 	 * to include time spent re-fetching tuples in the trigger cost.
 	 */
 	if (instr)
-		InstrStartNode(instr + tgindx);
+		InstrStartTrigger(instr + tgindx);
 
 	/*
 	 * Fetch the required tuple(s).
@@ -4604,10 +4604,10 @@ AfterTriggerExecute(EState *estate,
 
 	/*
 	 * If doing EXPLAIN ANALYZE, stop charging time to this trigger, and count
-	 * one "tuple returned" (really the number of firings).
+	 * the firing of the trigger.
 	 */
 	if (instr)
-		InstrStopNode(instr + tgindx, 1);
+		InstrStopTrigger(instr + tgindx, 1);
 }
 
 
@@ -4723,7 +4723,7 @@ afterTriggerInvokeEvents(AfterTriggerEventList *events,
 	Relation	rel = NULL;
 	TriggerDesc *trigdesc = NULL;
 	FmgrInfo   *finfo = NULL;
-	Instrumentation *instr = NULL;
+	TriggerInstrumentation *instr = NULL;
 	TupleTableSlot *slot1 = NULL,
 			   *slot2 = NULL;
 
diff --git a/src/backend/executor/execMain.c b/src/backend/executor/execMain.c
index ca14cdabdd0..07e2d8e8e26 100644
--- a/src/backend/executor/execMain.c
+++ b/src/backend/executor/execMain.c
@@ -331,7 +331,7 @@ standard_ExecutorRun(QueryDesc *queryDesc,
 
 	/* Allow instrumentation of Executor overall runtime */
 	if (queryDesc->totaltime)
-		InstrStartNode(queryDesc->totaltime);
+		InstrStart(queryDesc->totaltime);
 
 	/*
 	 * extract information from the query descriptor and the query feature.
@@ -383,7 +383,7 @@ standard_ExecutorRun(QueryDesc *queryDesc,
 		dest->rShutdown(dest);
 
 	if (queryDesc->totaltime)
-		InstrStopNode(queryDesc->totaltime, estate->es_processed);
+		InstrStop(queryDesc->totaltime);
 
 	MemoryContextSwitchTo(oldcontext);
 }
@@ -433,7 +433,7 @@ standard_ExecutorFinish(QueryDesc *queryDesc)
 
 	/* Allow instrumentation of Executor overall runtime */
 	if (queryDesc->totaltime)
-		InstrStartNode(queryDesc->totaltime);
+		InstrStart(queryDesc->totaltime);
 
 	/* Run ModifyTable nodes to completion */
 	ExecPostprocessPlan(estate);
@@ -443,7 +443,7 @@ standard_ExecutorFinish(QueryDesc *queryDesc)
 		AfterTriggerEndQuery(estate);
 
 	if (queryDesc->totaltime)
-		InstrStopNode(queryDesc->totaltime, 0);
+		InstrStop(queryDesc->totaltime);
 
 	MemoryContextSwitchTo(oldcontext);
 
@@ -1266,7 +1266,7 @@ InitResultRelInfo(ResultRelInfo *resultRelInfo,
 		resultRelInfo->ri_TrigWhenExprs = (ExprState **)
 			palloc0_array(ExprState *, n);
 		if (instrument_options)
-			resultRelInfo->ri_TrigInstrument = InstrAlloc(n, instrument_options, false);
+			resultRelInfo->ri_TrigInstrument = InstrAllocTrigger(n, instrument_options);
 	}
 	else
 	{
diff --git a/src/backend/executor/execParallel.c b/src/backend/executor/execParallel.c
index 772e81f3154..43286d27663 100644
--- a/src/backend/executor/execParallel.c
+++ b/src/backend/executor/execParallel.c
@@ -86,7 +86,7 @@ typedef struct FixedParallelExecutorState
  * instrument_options: Same meaning here as in instrument.c.
  *
  * instrument_offset: Offset, relative to the start of this structure,
- * of the first Instrumentation object.  This will depend on the length of
+ * of the first NodeInstrumentation object.  This will depend on the length of
  * the plan_node_id array.
  *
  * num_workers: Number of workers.
@@ -103,11 +103,15 @@ struct SharedExecutorInstrumentation
 	int			num_workers;
 	int			num_plan_nodes;
 	int			plan_node_id[FLEXIBLE_ARRAY_MEMBER];
-	/* array of num_plan_nodes * num_workers Instrumentation objects follows */
+
+	/*
+	 * array of num_plan_nodes * num_workers NodeInstrumentation objects
+	 * follows
+	 */
 };
 #define GetInstrumentationArray(sei) \
 	(AssertVariableIsOfTypeMacro(sei, SharedExecutorInstrumentation *), \
-	 (Instrumentation *) (((char *) sei) + sei->instrument_offset))
+	 (NodeInstrumentation *) (((char *) sei) + sei->instrument_offset))
 
 /* Context object for ExecParallelEstimate. */
 typedef struct ExecParallelEstimateContext
@@ -724,7 +728,7 @@ ExecInitParallelPlan(PlanState *planstate, EState *estate,
 		instrumentation_len = MAXALIGN(instrumentation_len);
 		instrument_offset = instrumentation_len;
 		instrumentation_len +=
-			mul_size(sizeof(Instrumentation),
+			mul_size(sizeof(NodeInstrumentation),
 					 mul_size(e.nnodes, nworkers));
 		shm_toc_estimate_chunk(&pcxt->estimator, instrumentation_len);
 		shm_toc_estimate_keys(&pcxt->estimator, 1);
@@ -810,7 +814,7 @@ ExecInitParallelPlan(PlanState *planstate, EState *estate,
 	 */
 	if (estate->es_instrument)
 	{
-		Instrumentation *instrument;
+		NodeInstrumentation *instrument;
 		int			i;
 
 		instrumentation = shm_toc_allocate(pcxt->toc, instrumentation_len);
@@ -820,7 +824,7 @@ ExecInitParallelPlan(PlanState *planstate, EState *estate,
 		instrumentation->num_plan_nodes = e.nnodes;
 		instrument = GetInstrumentationArray(instrumentation);
 		for (i = 0; i < nworkers * e.nnodes; ++i)
-			InstrInit(&instrument[i], estate->es_instrument);
+			InstrInitNode(&instrument[i], estate->es_instrument);
 		shm_toc_insert(pcxt->toc, PARALLEL_KEY_INSTRUMENTATION,
 					   instrumentation);
 		pei->instrumentation = instrumentation;
@@ -1052,7 +1056,7 @@ static bool
 ExecParallelRetrieveInstrumentation(PlanState *planstate,
 									SharedExecutorInstrumentation *instrumentation)
 {
-	Instrumentation *instrument;
+	NodeInstrumentation *instrument;
 	int			i;
 	int			n;
 	int			ibytes;
@@ -1080,9 +1084,9 @@ ExecParallelRetrieveInstrumentation(PlanState *planstate,
 	 * Switch into per-query memory context.
 	 */
 	oldcontext = MemoryContextSwitchTo(planstate->state->es_query_cxt);
-	ibytes = mul_size(instrumentation->num_workers, sizeof(Instrumentation));
+	ibytes = mul_size(instrumentation->num_workers, sizeof(NodeInstrumentation));
 	planstate->worker_instrument =
-		palloc(ibytes + offsetof(WorkerInstrumentation, instrument));
+		palloc(ibytes + offsetof(WorkerNodeInstrumentation, instrument));
 	MemoryContextSwitchTo(oldcontext);
 
 	planstate->worker_instrument->num_workers = instrumentation->num_workers;
@@ -1312,7 +1316,7 @@ ExecParallelReportInstrumentation(PlanState *planstate,
 {
 	int			i;
 	int			plan_node_id = planstate->plan->plan_node_id;
-	Instrumentation *instrument;
+	NodeInstrumentation *instrument;
 
 	InstrEndLoop(planstate->instrument);
 
diff --git a/src/backend/executor/execProcnode.c b/src/backend/executor/execProcnode.c
index 7e40b852517..1846661b503 100644
--- a/src/backend/executor/execProcnode.c
+++ b/src/backend/executor/execProcnode.c
@@ -413,8 +413,8 @@ ExecInitNode(Plan *node, EState *estate, int eflags)
 
 	/* Set up instrumentation for this node if requested */
 	if (estate->es_instrument)
-		result->instrument = InstrAlloc(1, estate->es_instrument,
-										result->async_capable);
+		result->instrument = InstrAllocNode(estate->es_instrument,
+											result->async_capable);
 
 	return result;
 }
diff --git a/src/backend/executor/instrument.c b/src/backend/executor/instrument.c
index edab92a0ebe..39da92739d9 100644
--- a/src/backend/executor/instrument.c
+++ b/src/backend/executor/instrument.c
@@ -26,38 +26,117 @@ static void BufferUsageAdd(BufferUsage *dst, const BufferUsage *add);
 static void WalUsageAdd(WalUsage *dst, WalUsage *add);
 
 
-/* Allocate new instrumentation structure(s) */
+/* General purpose instrumentation handling */
 Instrumentation *
-InstrAlloc(int n, int instrument_options, bool async_mode)
+InstrAlloc(int instrument_options)
 {
 	Instrumentation *instr;
 
 	/* initialize all fields to zeroes, then modify as needed */
-	instr = palloc0(n * sizeof(Instrumentation));
+	instr = palloc0(sizeof(Instrumentation));
 	if (instrument_options & (INSTRUMENT_BUFFERS | INSTRUMENT_TIMER | INSTRUMENT_WAL))
 	{
-		bool		need_buffers = (instrument_options & INSTRUMENT_BUFFERS) != 0;
-		bool		need_wal = (instrument_options & INSTRUMENT_WAL) != 0;
-		bool		need_timer = (instrument_options & INSTRUMENT_TIMER) != 0;
-		int			i;
-
-		for (i = 0; i < n; i++)
-		{
-			instr[i].need_bufusage = need_buffers;
-			instr[i].need_walusage = need_wal;
-			instr[i].need_timer = need_timer;
-			instr[i].async_mode = async_mode;
-		}
+		instr->need_bufusage = (instrument_options & INSTRUMENT_BUFFERS) != 0;
+		instr->need_walusage = (instrument_options & INSTRUMENT_WAL) != 0;
+		instr->need_timer = (instrument_options & INSTRUMENT_TIMER) != 0;
 	}
 
 	return instr;
 }
 
+void
+InstrStart(Instrumentation *instr)
+{
+	if (instr->need_timer &&
+		!INSTR_TIME_SET_CURRENT_LAZY(instr->starttime))
+		elog(ERROR, "InstrStart called twice in a row");
+
+	if (instr->need_bufusage)
+		instr->bufusage_start = pgBufferUsage;
+
+	if (instr->need_walusage)
+		instr->walusage_start = pgWalUsage;
+}
+
+void
+InstrStop(Instrumentation *instr)
+{
+	instr_time	endtime;
+
+	/* let's update the time only if the timer was requested */
+	if (instr->need_timer)
+	{
+		if (INSTR_TIME_IS_ZERO(instr->starttime))
+			elog(ERROR, "InstrStop called without start");
+
+		INSTR_TIME_SET_CURRENT(endtime);
+		INSTR_TIME_ACCUM_DIFF(instr->total, endtime, instr->starttime);
+
+		INSTR_TIME_SET_ZERO(instr->starttime);
+	}
+
+	/* Add delta of buffer usage since entry to node's totals */
+	if (instr->need_bufusage)
+		BufferUsageAccumDiff(&instr->bufusage,
+							 &pgBufferUsage, &instr->bufusage_start);
+
+	if (instr->need_walusage)
+		WalUsageAccumDiff(&instr->walusage,
+						  &pgWalUsage, &instr->walusage_start);
+}
+
+/* Trigger instrumentation handling */
+TriggerInstrumentation *
+InstrAllocTrigger(int n, int instrument_options)
+{
+	TriggerInstrumentation *tginstr = palloc0(n * sizeof(TriggerInstrumentation));
+	bool		need_buffers = (instrument_options & INSTRUMENT_BUFFERS) != 0;
+	bool		need_wal = (instrument_options & INSTRUMENT_WAL) != 0;
+	bool		need_timer = (instrument_options & INSTRUMENT_TIMER) != 0;
+	int			i;
+
+	for (i = 0; i < n; i++)
+	{
+		tginstr[i].instr.need_bufusage = need_buffers;
+		tginstr[i].instr.need_walusage = need_wal;
+		tginstr[i].instr.need_timer = need_timer;
+	}
+
+	return tginstr;
+}
+
+void
+InstrStartTrigger(TriggerInstrumentation *tginstr)
+{
+	InstrStart(&tginstr->instr);
+}
+
+void
+InstrStopTrigger(TriggerInstrumentation *tginstr, int firings)
+{
+	InstrStop(&tginstr->instr);
+	tginstr->firings += firings;
+}
+
+/* Node instrumentation handling */
+
+/* Allocate new node instrumentation structure */
+NodeInstrumentation *
+InstrAllocNode(int instrument_options, bool async_mode)
+{
+	NodeInstrumentation *instr = palloc(sizeof(NodeInstrumentation));
+
+	InstrInitNode(instr, instrument_options);
+	instr->async_mode = async_mode;
+
+	return instr;
+}
+
 /* Initialize a pre-allocated instrumentation structure. */
 void
-InstrInit(Instrumentation *instr, int instrument_options)
+InstrInitNode(NodeInstrumentation *instr, int instrument_options)
 {
-	memset(instr, 0, sizeof(Instrumentation));
+	memset(instr, 0, sizeof(NodeInstrumentation));
 	instr->need_bufusage = (instrument_options & INSTRUMENT_BUFFERS) != 0;
 	instr->need_walusage = (instrument_options & INSTRUMENT_WAL) != 0;
 	instr->need_timer = (instrument_options & INSTRUMENT_TIMER) != 0;
@@ -65,7 +144,7 @@ InstrInit(Instrumentation *instr, int instrument_options)
 
 /* Entry to a plan node */
 void
-InstrStartNode(Instrumentation *instr)
+InstrStartNode(NodeInstrumentation *instr)
 {
 	if (instr->need_timer &&
 		!INSTR_TIME_SET_CURRENT_LAZY(instr->starttime))
@@ -81,7 +160,7 @@ InstrStartNode(Instrumentation *instr)
 
 /* Exit from a plan node */
 void
-InstrStopNode(Instrumentation *instr, double nTuples)
+InstrStopNode(NodeInstrumentation *instr, double nTuples)
 {
 	double		save_tuplecount = instr->tuplecount;
 	instr_time	endtime;
@@ -129,7 +208,7 @@ InstrStopNode(Instrumentation *instr, double nTuples)
 
 /* Update tuple count */
 void
-InstrUpdateTupleCount(Instrumentation *instr, double nTuples)
+InstrUpdateTupleCount(NodeInstrumentation *instr, double nTuples)
 {
 	/* count the returned tuples */
 	instr->tuplecount += nTuples;
@@ -137,7 +216,7 @@ InstrUpdateTupleCount(Instrumentation *instr, double nTuples)
 
 /* Finish a run cycle for a plan node */
 void
-InstrEndLoop(Instrumentation *instr)
+InstrEndLoop(NodeInstrumentation *instr)
 {
 	/* Skip if nothing has happened, or already shut down */
 	if (!instr->running)
@@ -162,7 +241,7 @@ InstrEndLoop(Instrumentation *instr)
 
 /* aggregate instrumentation information */
 void
-InstrAggNode(Instrumentation *dst, Instrumentation *add)
+InstrAggNode(NodeInstrumentation *dst, NodeInstrumentation *add)
 {
 	if (!dst->running && add->running)
 	{
diff --git a/src/include/executor/instrument.h b/src/include/executor/instrument.h
index 64e91373b5d..16688b5fdb4 100644
--- a/src/include/executor/instrument.h
+++ b/src/include/executor/instrument.h
@@ -67,7 +67,40 @@ typedef enum InstrumentOption
 	INSTRUMENT_ALL = PG_INT32_MAX
 } InstrumentOption;
 
+/*
+ * General purpose instrumentation that can capture time and WAL/buffer usage
+ *
+ * Initialized through InstrAlloc, followed by one or more calls to a pair of
+ * InstrStart/InstrStop (activity is measured inbetween).
+ */
 typedef struct Instrumentation
+{
+	/* Parameters set at creation: */
+	bool		need_timer;		/* true if we need timer data */
+	bool		need_bufusage;	/* true if we need buffer usage data */
+	bool		need_walusage;	/* true if we need WAL usage data */
+	/* Internal state keeping: */
+	instr_time	starttime;		/* start time of last InstrStart */
+	BufferUsage bufusage_start; /* buffer usage at start */
+	WalUsage	walusage_start; /* WAL usage at start */
+	/* Accumulated statistics: */
+	instr_time	total;			/* total runtime */
+	BufferUsage bufusage;		/* total buffer usage */
+	WalUsage	walusage;		/* total WAL usage */
+} Instrumentation;
+
+/* Trigger instrumentation */
+typedef struct TriggerInstrumentation
+{
+	Instrumentation instr;
+	int			firings;		/* number of times the instrumented trigger
+								 * was fired */
+} TriggerInstrumentation;
+
+/*
+ * Specialized instrumentation for per-node execution statistics
+ */
+typedef struct NodeInstrumentation
 {
 	/* Parameters set at node creation: */
 	bool		need_timer;		/* true if we need timer data */
@@ -92,25 +125,34 @@ typedef struct Instrumentation
 	double		nfiltered2;		/* # of tuples removed by "other" quals */
 	BufferUsage bufusage;		/* total buffer usage */
 	WalUsage	walusage;		/* total WAL usage */
-} Instrumentation;
+} NodeInstrumentation;
 
-typedef struct WorkerInstrumentation
+typedef struct WorkerNodeInstrumentation
 {
 	int			num_workers;	/* # of structures that follow */
-	Instrumentation instrument[FLEXIBLE_ARRAY_MEMBER];
-} WorkerInstrumentation;
+	NodeInstrumentation instrument[FLEXIBLE_ARRAY_MEMBER];
+} WorkerNodeInstrumentation;
 
 extern PGDLLIMPORT BufferUsage pgBufferUsage;
 extern PGDLLIMPORT WalUsage pgWalUsage;
 
-extern Instrumentation *InstrAlloc(int n, int instrument_options,
-								   bool async_mode);
-extern void InstrInit(Instrumentation *instr, int instrument_options);
-extern void InstrStartNode(Instrumentation *instr);
-extern void InstrStopNode(Instrumentation *instr, double nTuples);
-extern void InstrUpdateTupleCount(Instrumentation *instr, double nTuples);
-extern void InstrEndLoop(Instrumentation *instr);
-extern void InstrAggNode(Instrumentation *dst, Instrumentation *add);
+extern Instrumentation *InstrAlloc(int instrument_options);
+extern void InstrStart(Instrumentation *instr);
+extern void InstrStop(Instrumentation *instr);
+
+extern TriggerInstrumentation *InstrAllocTrigger(int n, int instrument_options);
+extern void InstrStartTrigger(TriggerInstrumentation *tginstr);
+extern void InstrStopTrigger(TriggerInstrumentation *tginstr, int firings);
+
+extern NodeInstrumentation *InstrAllocNode(int instrument_options,
+										   bool async_mode);
+extern void InstrInitNode(NodeInstrumentation *instr, int instrument_options);
+extern void InstrStartNode(NodeInstrumentation *instr);
+extern void InstrStopNode(NodeInstrumentation *instr, double nTuples);
+extern void InstrUpdateTupleCount(NodeInstrumentation *instr, double nTuples);
+extern void InstrEndLoop(NodeInstrumentation *instr);
+extern void InstrAggNode(NodeInstrumentation *dst, NodeInstrumentation *add);
+
 extern void InstrStartParallelQuery(void);
 extern void InstrEndParallelQuery(BufferUsage *bufusage, WalUsage *walusage);
 extern void InstrAccumParallelQuery(BufferUsage *bufusage, WalUsage *walusage);
diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h
index f8053d9e572..fb1607b5bdd 100644
--- a/src/include/nodes/execnodes.h
+++ b/src/include/nodes/execnodes.h
@@ -523,7 +523,7 @@ typedef struct ResultRelInfo
 	ExprState **ri_TrigWhenExprs;
 
 	/* optional runtime measurements for triggers */
-	Instrumentation *ri_TrigInstrument;
+	TriggerInstrumentation *ri_TrigInstrument;
 
 	/* On-demand created slots for triggers / returning processing */
 	TupleTableSlot *ri_ReturningSlot;	/* for trigger output tuples */
@@ -1174,8 +1174,10 @@ typedef struct PlanState
 	ExecProcNodeMtd ExecProcNodeReal;	/* actual function, if above is a
 										 * wrapper */
 
-	Instrumentation *instrument;	/* Optional runtime stats for this node */
-	WorkerInstrumentation *worker_instrument;	/* per-worker instrumentation */
+	NodeInstrumentation *instrument;	/* Optional runtime stats for this
+										 * node */
+	WorkerNodeInstrumentation *worker_instrument;	/* per-worker
+													 * instrumentation */
 
 	/* Per-worker JIT instrumentation */
 	struct SharedJitInstrumentation *worker_jit_instrument;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index 14dec2d49c1..718ac07e777 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -1777,6 +1777,7 @@ NextSampleBlock_function
 NextSampleTuple_function
 NextValueExpr
 Node
+NodeInstrumentation
 NodeTag
 NonEmptyRange
 NoneCompressorState
@@ -3141,6 +3142,7 @@ TriggerDesc
 TriggerEvent
 TriggerFlags
 TriggerInfo
+TriggerInstrumentation
 TriggerTransition
 TruncateStmt
 TsmRoutine
@@ -3361,9 +3363,9 @@ WorkTableScan
 WorkTableScanState
 WorkerInfo
 WorkerInfoData
-WorkerInstrumentation
 WorkerJobDumpPtrType
 WorkerJobRestorePtrType
+WorkerNodeInstrumentation
 Working_State
 WriteBufPtrType
 WriteBytePtrType
-- 
2.47.1



  [application/octet-stream] v5-0006-Index-scans-Split-heap-and-index-buffer-access-re.patch (12.2K, ../../CAP53Pkw85U-aMRzkZ+kRKfCh0pA5vyo=_W16gPK4sirZxiJy=A@mail.gmail.com/7-v5-0006-Index-scans-Split-heap-and-index-buffer-access-re.patch)
  download | inline diff:
From e5ac9b5b15157dc22fa0fe430c4a2426b6582d8a Mon Sep 17 00:00:00 2001
From: Lukas Fittl <[email protected]>
Date: Mon, 12 Jan 2026 18:23:03 -0800
Subject: [PATCH v5 6/6] Index scans: Split heap and index buffer access
 reporting in EXPLAIN

This makes it clear whether activity was on the index directly, or
on the table based on heap fetches.
---
 src/backend/commands/explain.c         | 56 +++++++++++++++-----------
 src/backend/executor/execProcnode.c    | 11 +++++
 src/backend/executor/instrument.c      | 25 ++++++++++++
 src/backend/executor/nodeIndexscan.c   | 15 ++++++-
 src/include/executor/instrument.h      |  3 ++
 src/include/executor/instrument_node.h |  4 ++
 6 files changed, 90 insertions(+), 24 deletions(-)

diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c
index dee5344e6d3..21568fbd534 100644
--- a/src/backend/commands/explain.c
+++ b/src/backend/commands/explain.c
@@ -143,7 +143,7 @@ static void show_instrumentation_count(const char *qlabel, int which,
 static void show_foreignscan_info(ForeignScanState *fsstate, ExplainState *es);
 static const char *explain_get_index_name(Oid indexId);
 static bool peek_buffer_usage(ExplainState *es, const BufferUsage *usage);
-static void show_buffer_usage(ExplainState *es, const BufferUsage *usage);
+static void show_buffer_usage(ExplainState *es, const BufferUsage *usage, const char *title);
 static void show_wal_usage(ExplainState *es, const WalUsage *usage);
 static void show_memory_counters(ExplainState *es,
 								 const MemoryContextCounters *mem_counters);
@@ -603,7 +603,7 @@ ExplainOnePlan(PlannedStmt *plannedstmt, IntoClause *into, ExplainState *es,
 		}
 
 		if (bufusage)
-			show_buffer_usage(es, bufusage);
+			show_buffer_usage(es, bufusage, NULL);
 
 		if (mem_counters)
 			show_memory_counters(es, mem_counters);
@@ -1020,7 +1020,7 @@ ExplainPrintSerialize(ExplainState *es, SerializeMetrics *metrics)
 		if (es->buffers && peek_buffer_usage(es, &metrics->bufferUsage))
 		{
 			es->indent++;
-			show_buffer_usage(es, &metrics->bufferUsage);
+			show_buffer_usage(es, &metrics->bufferUsage, NULL);
 			es->indent--;
 		}
 	}
@@ -1034,7 +1034,7 @@ ExplainPrintSerialize(ExplainState *es, SerializeMetrics *metrics)
 								BYTES_TO_KILOBYTES(metrics->bytesSent), es);
 		ExplainPropertyText("Format", format, es);
 		if (es->buffers)
-			show_buffer_usage(es, &metrics->bufferUsage);
+			show_buffer_usage(es, &metrics->bufferUsage, NULL);
 	}
 
 	ExplainCloseGroup("Serialization", "Serialization", true, es);
@@ -1962,6 +1962,9 @@ ExplainNode(PlanState *planstate, List *ancestors,
 				show_instrumentation_count("Rows Removed by Filter", 1,
 										   planstate, es);
 			show_indexsearches_info(planstate, es);
+
+			if (es->buffers && planstate->instrument)
+				show_buffer_usage(es, &((IndexScanState *) planstate)->iss_Instrument.table_stack.bufusage, "Table");
 			break;
 		case T_IndexOnlyScan:
 			show_scan_qual(((IndexOnlyScan *) plan)->indexqual,
@@ -2280,7 +2283,8 @@ ExplainNode(PlanState *planstate, List *ancestors,
 
 	/* Show buffer/WAL usage */
 	if (es->buffers && planstate->instrument)
-		show_buffer_usage(es, &planstate->instrument->stack.bufusage);
+		show_buffer_usage(es, &planstate->instrument->stack.bufusage,
+						  IsA(plan, IndexScan) ? "Index" : NULL);
 	if (es->wal && planstate->instrument)
 		show_wal_usage(es, &planstate->instrument->stack.walusage);
 
@@ -2299,7 +2303,7 @@ ExplainNode(PlanState *planstate, List *ancestors,
 
 			ExplainOpenWorker(n, es);
 			if (es->buffers)
-				show_buffer_usage(es, &instrument->stack.bufusage);
+				show_buffer_usage(es, &instrument->stack.bufusage, NULL);
 			if (es->wal)
 				show_wal_usage(es, &instrument->stack.walusage);
 			ExplainCloseWorker(n, es);
@@ -4099,7 +4103,7 @@ peek_buffer_usage(ExplainState *es, const BufferUsage *usage)
  * Show buffer usage details.  This better be sync with peek_buffer_usage.
  */
 static void
-show_buffer_usage(ExplainState *es, const BufferUsage *usage)
+show_buffer_usage(ExplainState *es, const BufferUsage *usage, const char *title)
 {
 	if (es->format == EXPLAIN_FORMAT_TEXT)
 	{
@@ -4124,6 +4128,8 @@ show_buffer_usage(ExplainState *es, const BufferUsage *usage)
 		if (has_shared || has_local || has_temp)
 		{
 			ExplainIndentText(es);
+			if (title)
+				appendStringInfo(es->str, "%s ", title);
 			appendStringInfoString(es->str, "Buffers:");
 
 			if (has_shared)
@@ -4179,6 +4185,8 @@ show_buffer_usage(ExplainState *es, const BufferUsage *usage)
 		if (has_shared_timing || has_local_timing || has_temp_timing)
 		{
 			ExplainIndentText(es);
+			if (title)
+				appendStringInfo(es->str, "%s ", title);
 			appendStringInfoString(es->str, "I/O Timings:");
 
 			if (has_shared_timing)
@@ -4220,44 +4228,46 @@ show_buffer_usage(ExplainState *es, const BufferUsage *usage)
 	}
 	else
 	{
-		ExplainPropertyInteger("Shared Hit Blocks", NULL,
+		char	   *prefix = title ? psprintf("%s ", title) : pstrdup("");
+
+		ExplainPropertyInteger(psprintf("%sShared Hit Blocks", prefix), NULL,
 							   usage->shared_blks_hit, es);
-		ExplainPropertyInteger("Shared Read Blocks", NULL,
+		ExplainPropertyInteger(psprintf("%sShared Read Blocks", prefix), NULL,
 							   usage->shared_blks_read, es);
-		ExplainPropertyInteger("Shared Dirtied Blocks", NULL,
+		ExplainPropertyInteger(psprintf("%sShared Dirtied Blocks", prefix), NULL,
 							   usage->shared_blks_dirtied, es);
-		ExplainPropertyInteger("Shared Written Blocks", NULL,
+		ExplainPropertyInteger(psprintf("%sShared Written Blocks", prefix), NULL,
 							   usage->shared_blks_written, es);
-		ExplainPropertyInteger("Local Hit Blocks", NULL,
+		ExplainPropertyInteger(psprintf("%sLocal Hit Blocks", prefix), NULL,
 							   usage->local_blks_hit, es);
-		ExplainPropertyInteger("Local Read Blocks", NULL,
+		ExplainPropertyInteger(psprintf("%sLocal Read Blocks", prefix), NULL,
 							   usage->local_blks_read, es);
-		ExplainPropertyInteger("Local Dirtied Blocks", NULL,
+		ExplainPropertyInteger(psprintf("%sLocal Dirtied Blocks", prefix), NULL,
 							   usage->local_blks_dirtied, es);
-		ExplainPropertyInteger("Local Written Blocks", NULL,
+		ExplainPropertyInteger(psprintf("%sLocal Written Blocks", prefix), NULL,
 							   usage->local_blks_written, es);
-		ExplainPropertyInteger("Temp Read Blocks", NULL,
+		ExplainPropertyInteger(psprintf("%sTemp Read Blocks", prefix), NULL,
 							   usage->temp_blks_read, es);
-		ExplainPropertyInteger("Temp Written Blocks", NULL,
+		ExplainPropertyInteger(psprintf("%sTemp Written Blocks", prefix), NULL,
 							   usage->temp_blks_written, es);
 		if (track_io_timing)
 		{
-			ExplainPropertyFloat("Shared I/O Read Time", "ms",
+			ExplainPropertyFloat(psprintf("%sShared I/O Read Time", prefix), "ms",
 								 INSTR_TIME_GET_MILLISEC(usage->shared_blk_read_time),
 								 3, es);
-			ExplainPropertyFloat("Shared I/O Write Time", "ms",
+			ExplainPropertyFloat(psprintf("%sShared I/O Write Time", prefix), "ms",
 								 INSTR_TIME_GET_MILLISEC(usage->shared_blk_write_time),
 								 3, es);
-			ExplainPropertyFloat("Local I/O Read Time", "ms",
+			ExplainPropertyFloat(psprintf("%sLocal I/O Read Time", prefix), "ms",
 								 INSTR_TIME_GET_MILLISEC(usage->local_blk_read_time),
 								 3, es);
-			ExplainPropertyFloat("Local I/O Write Time", "ms",
+			ExplainPropertyFloat(psprintf("%sLocal I/O Write Time", prefix), "ms",
 								 INSTR_TIME_GET_MILLISEC(usage->local_blk_write_time),
 								 3, es);
-			ExplainPropertyFloat("Temp I/O Read Time", "ms",
+			ExplainPropertyFloat(psprintf("%sTemp I/O Read Time", prefix), "ms",
 								 INSTR_TIME_GET_MILLISEC(usage->temp_blk_read_time),
 								 3, es);
-			ExplainPropertyFloat("Temp I/O Write Time", "ms",
+			ExplainPropertyFloat(psprintf("%sTemp I/O Write Time", prefix), "ms",
 								 INSTR_TIME_GET_MILLISEC(usage->temp_blk_write_time),
 								 3, es);
 		}
diff --git a/src/backend/executor/execProcnode.c b/src/backend/executor/execProcnode.c
index a5afe83237d..c727b7f2454 100644
--- a/src/backend/executor/execProcnode.c
+++ b/src/backend/executor/execProcnode.c
@@ -856,6 +856,17 @@ ExecAccumNodeInstrumentation_walker(PlanState *node, void *context)
 	if (!node->instrument || !node->instrument->stack.previous)
 		return false;
 
+	/*
+	 * Index Scan nodes account for table buffer usage separately, so we need
+	 * to explitly add it here.
+	 */
+	if (IsA(node, IndexScanState))
+	{
+		IndexScanState *iss = castNode(IndexScanState, node);
+
+		InstrStackAdd(node->instrument->stack.previous, &iss->iss_Instrument.table_stack);
+	}
+
 	InstrStackAdd(node->instrument->stack.previous, &node->instrument->stack);
 
 	return false;
diff --git a/src/backend/executor/instrument.c b/src/backend/executor/instrument.c
index 26e0ae7726c..2f145d67dff 100644
--- a/src/backend/executor/instrument.c
+++ b/src/backend/executor/instrument.c
@@ -375,6 +375,31 @@ InstrAggNode(NodeInstrumentation *dst, NodeInstrumentation *add)
 		WalUsageAdd(&dst->stack.walusage, &add->stack.walusage);
 }
 
+void
+InstrStartNodeStack(NodeInstrumentation *instr, InstrStack * stack)
+{
+	if (instr->need_bufusage || instr->need_walusage)
+	{
+		/* Ensure that we always have a parent, even at the top most node */
+		Assert(pgInstrStack != NULL);
+
+		InstrPushStack(stack);
+	}
+}
+
+void
+InstrStopNodeStack(NodeInstrumentation *instr, InstrStack * stack)
+{
+	if (instr->need_bufusage || instr->need_walusage)
+	{
+		/* Ensure that we always have a parent, even at the top most node */
+		Assert(stack->previous != NULL);
+
+		/* Adding to parent is handled by ExecAccumNodeInstrumentation */
+		InstrPopStack(stack, false);
+	}
+}
+
 /* start instrumentation during parallel executor startup */
 Instrumentation *
 InstrStartParallelQuery(void)
diff --git a/src/backend/executor/nodeIndexscan.c b/src/backend/executor/nodeIndexscan.c
index 84823f0b615..0fc197f87da 100644
--- a/src/backend/executor/nodeIndexscan.c
+++ b/src/backend/executor/nodeIndexscan.c
@@ -83,6 +83,7 @@ IndexNext(IndexScanState *node)
 	ExprContext *econtext;
 	ScanDirection direction;
 	IndexScanDesc scandesc;
+	ItemPointer tid;
 	TupleTableSlot *slot;
 
 	/*
@@ -128,8 +129,20 @@ IndexNext(IndexScanState *node)
 	/*
 	 * ok, now that we have what we need, fetch the next tuple.
 	 */
-	while (index_getnext_slot(scandesc, direction, slot))
+	while ((tid = index_getnext_tid(scandesc, direction)) != NULL)
 	{
+		if (node->ss.ps.instrument)
+			InstrStartNodeStack(node->ss.ps.instrument, &node->iss_Instrument.table_stack);
+
+		if (unlikely(!index_fetch_heap(scandesc, slot)))
+			continue;
+
+		if (node->ss.ps.instrument)
+			InstrStopNodeStack(node->ss.ps.instrument, &node->iss_Instrument.table_stack);
+
+		if (scandesc->xs_heap_continue)
+			elog(ERROR, "non-MVCC snapshots are not supported in index-only scans");
+
 		CHECK_FOR_INTERRUPTS();
 
 		/*
diff --git a/src/include/executor/instrument.h b/src/include/executor/instrument.h
index 145217b0df8..d1be3db9749 100644
--- a/src/include/executor/instrument.h
+++ b/src/include/executor/instrument.h
@@ -185,6 +185,9 @@ extern void InstrUpdateTupleCount(NodeInstrumentation *instr, double nTuples);
 extern void InstrEndLoop(NodeInstrumentation *instr);
 extern void InstrAggNode(NodeInstrumentation *dst, NodeInstrumentation *add);
 
+extern void InstrStartNodeStack(NodeInstrumentation *dst, InstrStack * stack);
+extern void InstrStopNodeStack(NodeInstrumentation *dst, InstrStack * stack);
+
 pg_nodiscard extern Instrumentation *InstrStartParallelQuery(void);
 extern void InstrEndParallelQuery(Instrumentation *instr, BufferUsage *bufusage, WalUsage *walusage);
 extern void InstrAccumParallelQuery(BufferUsage *bufusage, WalUsage *walusage);
diff --git a/src/include/executor/instrument_node.h b/src/include/executor/instrument_node.h
index 8847d7f94fa..25554c43942 100644
--- a/src/include/executor/instrument_node.h
+++ b/src/include/executor/instrument_node.h
@@ -18,6 +18,8 @@
 #ifndef INSTRUMENT_NODE_H
 #define INSTRUMENT_NODE_H
 
+#include "executor/instrument.h"
+
 
 /* ---------------------
  *	Instrumentation information for aggregate function execution
@@ -48,6 +50,8 @@ typedef struct IndexScanInstrumentation
 {
 	/* Index search count (incremented with pgstat_count_index_scan call) */
 	uint64		nsearches;
+	/* Buffer usage of heap access during index scans */
+	InstrStack	table_stack;
 } IndexScanInstrumentation;
 
 /*
-- 
2.47.1



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2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-12 01:02 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
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2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2021-03-15 14:20 [PATCH] cfe-12-gist_over_cfe-11-persistent squash commit Bruce Momjian <[email protected]>
2026-01-13 08:01 Re: Stack-based tracking of per-node WAL/buffer usage Lukas Fittl <[email protected]>

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