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commit    e26692248ada18417199b47bc2e4e1648d530953
Author:   Teodor Sigaev <teodor@sigaev.ru>
Date:     Mon Sep 07 14:16:29 2015 +0000
First released in: 9.6.0, 9.0.23, 9.1.19, 9.2.14, 9.3.10, 9.4.5, 9.5.0

    Make GIN's cleanup pending list process interruptable
    
    Cleanup process could be called by ordinary insert/update and could take a lot
    of time. Add vacuum_delay_point() to make this process interruptable. Under
    vacuum this call will also throttle a vacuum process to decrease system load,
    called from insert/update it will not throttle, and that reduces a latency.
    
    Backpatch for all supported branches.
    
    Jeff Janes <jeff.janes@gmail.com>


 src/backend/access/gin/ginfast.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/backend/access/gin/ginfast.c b/src/backend/access/gin/ginfast.c
index fa8d8a756eb..76bebad8e1f 100644
--- a/src/backend/access/gin/ginfast.c
+++ b/src/backend/access/gin/ginfast.c
@@ -810,8 +810,7 @@ ginInsertCleanup(GinState *ginstate,
 		 */
 		processPendingPage(&accum, &datums, page, FirstOffsetNumber);
 
-		if (vac_delay)
-			vacuum_delay_point();
+		vacuum_delay_point();
 
 		/*
 		 * Is it time to flush memory to disk?	Flush if we are at the end of
@@ -851,8 +850,7 @@ ginInsertCleanup(GinState *ginstate,
 			{
 				ginEntryInsert(ginstate, attnum, key, category,
 							   list, nlist, NULL);
-				if (vac_delay)
-					vacuum_delay_point();
+				vacuum_delay_point();
 			}
 
 			/*
@@ -937,7 +935,7 @@ ginInsertCleanup(GinState *ginstate,
 		/*
 		 * Read next page in pending list
 		 */
-		CHECK_FOR_INTERRUPTS();
+		vacuum_delay_point();
 		buffer = ReadBuffer(index, blkno);
 		LockBuffer(buffer, GIN_SHARE);
 		page = BufferGetPage(buffer);


[parent: e95680832854]