Subject: [PATCH v3] Add IS_INDEX macro to brin and gist index

From: Japin Li <[email-masked]>
Date: Wed, 14 Jan 2026 09:55:46 +0800

This commit also moves IS_INDEX macro to pageinspect.h

Suggested-by: Japin Li <[email-masked]>
Suggested-by: Andrey Borodin <[email-masked]>
Reviewed-by: Andreas Karlsson <[email-masked]>
Reviewed-by: Kirill Reshke <[email-masked]>

Discussion: https://postgr.es/m/[email-masked]
Discussion: https://postgr.es/m/[email-masked]
---
 contrib/pageinspect/brinfuncs.c   | 2 +-
 contrib/pageinspect/btreefuncs.c  | 7 +++----
 contrib/pageinspect/gistfuncs.c   | 2 +-
 contrib/pageinspect/hashfuncs.c   | 5 ++---
 contrib/pageinspect/pageinspect.h | 2 ++
 5 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/contrib/pageinspect/brinfuncs.c b/contrib/pageinspect/brinfuncs.c
index 26cf78252ed..a1cbd9fa040 100644
--- a/contrib/pageinspect/brinfuncs.c
+++ b/contrib/pageinspect/brinfuncs.c
@@ -28,7 +28,7 @@ PG_FUNCTION_INFO_V1(brin_page_items);
 PG_FUNCTION_INFO_V1(brin_metapage_info);
 PG_FUNCTION_INFO_V1(brin_revmap_data);
 
-#define IS_BRIN(r) ((r)->rd_rel->relam == BRIN_AM_OID)
+#define IS_BRIN(r) (IS_INDEX(r) && (r)->rd_rel->relam == BRIN_AM_OID)
 
 typedef struct brin_column_state
 {
diff --git a/contrib/pageinspect/btreefuncs.c b/contrib/pageinspect/btreefuncs.c
index 0585b7cee40..a49a9beee68 100644
--- a/contrib/pageinspect/btreefuncs.c
+++ b/contrib/pageinspect/btreefuncs.c
@@ -49,8 +49,7 @@ PG_FUNCTION_INFO_V1(bt_page_stats_1_9);
 PG_FUNCTION_INFO_V1(bt_page_stats);
 PG_FUNCTION_INFO_V1(bt_multi_page_stats);
 
-#define IS_INDEX(r) ((r)->rd_rel->relkind == RELKIND_INDEX)
-#define IS_BTREE(r) ((r)->rd_rel->relam == BTREE_AM_OID)
+#define IS_BTREE(r) (IS_INDEX(r) && (r)->rd_rel->relam == BTREE_AM_OID)
 
 /* ------------------------------------------------
  * structure for single btree page statistics
@@ -225,7 +224,7 @@ check_relation_block_range(Relation rel, int64 blkno)
 static void
 bt_index_block_validate(Relation rel, int64 blkno)
 {
-	if (!IS_INDEX(rel) || !IS_BTREE(rel))
+	if (!IS_BTREE(rel))
 		ereport(ERROR,
 				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 				 errmsg("\"%s\" is not a %s index",
@@ -858,7 +857,7 @@ bt_metap(PG_FUNCTION_ARGS)
 	relrv = makeRangeVarFromNameList(textToQualifiedNameList(relname));
 	rel = relation_openrv(relrv, AccessShareLock);
 
-	if (!IS_INDEX(rel) || !IS_BTREE(rel))
+	if (!IS_BTREE(rel))
 		ereport(ERROR,
 				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 				 errmsg("\"%s\" is not a %s index",
diff --git a/contrib/pageinspect/gistfuncs.c b/contrib/pageinspect/gistfuncs.c
index a205cb8a334..88776b04d5d 100644
--- a/contrib/pageinspect/gistfuncs.c
+++ b/contrib/pageinspect/gistfuncs.c
@@ -30,7 +30,7 @@ PG_FUNCTION_INFO_V1(gist_page_opaque_info);
 PG_FUNCTION_INFO_V1(gist_page_items);
 PG_FUNCTION_INFO_V1(gist_page_items_bytea);
 
-#define IS_GIST(r) ((r)->rd_rel->relam == GIST_AM_OID)
+#define IS_GIST(r) (IS_INDEX(r) && (r)->rd_rel->relam == GIST_AM_OID)

 static Page verify_gist_page(bytea *raw_page);
diff --git a/contrib/pageinspect/hashfuncs.c b/contrib/pageinspect/hashfuncs.c
index 7fc97d043ce..86e73b36b41 100644
--- a/contrib/pageinspect/hashfuncs.c
+++ b/contrib/pageinspect/hashfuncs.c
@@ -28,8 +28,7 @@ PG_FUNCTION_INFO_V1(hash_page_items);
 PG_FUNCTION_INFO_V1(hash_bitmap_info);
 PG_FUNCTION_INFO_V1(hash_metapage_info);
 
-#define IS_INDEX(r) ((r)->rd_rel->relkind == RELKIND_INDEX)
-#define IS_HASH(r) ((r)->rd_rel->relam == HASH_AM_OID)
+#define IS_HASH(r) (IS_INDEX(r) && (r)->rd_rel->relam == HASH_AM_OID)
 
 /* ------------------------------------------------
  * structure for single hash page statistics
@@ -421,7 +420,7 @@ hash_bitmap_info(PG_FUNCTION_ARGS)
 	 */
 	indexRel = relation_open(indexRelid, AccessShareLock);
 
-	if (!IS_INDEX(indexRel) || !IS_HASH(indexRel))
+	if (!IS_HASH(indexRel))
 		ereport(ERROR,
 				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 				 errmsg("\"%s\" is not a %s index",
diff --git a/contrib/pageinspect/pageinspect.h b/contrib/pageinspect/pageinspect.h
index b241fdc97b2..7d472dc784f 100644
--- a/contrib/pageinspect/pageinspect.h
+++ b/contrib/pageinspect/pageinspect.h
@@ -15,6 +15,8 @@
 
 #include "storage/bufpage.h"
 
+#define IS_INDEX(r) ((r)->rd_rel->relkind == RELKIND_INDEX)
+
 /*
  * Extension version number, for supporting older extension versions' objects
  */
-- 
2.43.0

--=-=-=--