7 files changed, 15 insertions, 13 deletions
diff --git a/src/include/access/gist.h b/src/include/access/gist.h
index db78e60eeab..b3f4e02cbfd 100644
--- a/src/include/access/gist.h
+++ b/src/include/access/gist.h
@@ -40,7 +40,7 @@
 #define GIST_FETCH_PROC					9
 #define GIST_OPTIONS_PROC				10
 #define GIST_SORTSUPPORT_PROC			11
-#define GIST_STRATNUM_PROC				12
+#define GIST_TRANSLATE_CMPTYPE_PROC		12
 #define GISTNProcs					12
 
 /*
diff --git a/src/include/access/nbtree.h b/src/include/access/nbtree.h
index ebca02588d3..e709d2e0afe 100644
--- a/src/include/access/nbtree.h
+++ b/src/include/access/nbtree.h
@@ -939,7 +939,7 @@ typedef BTVacuumPostingData *BTVacuumPosting;
  * processing.  This approach minimizes lock/unlock traffic.  We must always
  * drop the lock to make it okay for caller to process the returned items.
  * Whether or not we can also release the pin during this window will vary.
- * We drop the pin eagerly (when safe) to avoid blocking progress by VACUUM
+ * We drop the pin (when so->dropPin) to avoid blocking progress by VACUUM
  * (see nbtree/README section about making concurrent TID recycling safe).
  * We'll always release both the lock and the pin on the current page before
  * moving on to its sibling page.
@@ -967,7 +967,7 @@ typedef struct BTScanPosData
 	BlockNumber currPage;		/* page referenced by items array */
 	BlockNumber prevPage;		/* currPage's left link */
 	BlockNumber nextPage;		/* currPage's right link */
-	XLogRecPtr	lsn;			/* currPage's LSN */
+	XLogRecPtr	lsn;			/* currPage's LSN (when so->dropPin) */
 
 	/* scan direction for the saved position's call to _bt_readpage */
 	ScanDirection dir;
@@ -1070,6 +1070,7 @@ typedef struct BTScanOpaqueData
 	/* info about killed items if any (killedItems is NULL if never used) */
 	int		   *killedItems;	/* currPos.items indexes of killed items */
 	int			numKilled;		/* number of currently stored items */
+	bool		dropPin;		/* drop leaf pin before btgettuple returns? */
 
 	/*
 	 * If we are doing an index-only scan, these are the tuple storage
diff --git a/src/include/access/xact.h b/src/include/access/xact.h
index b2bc10ee041..7f11b919799 100644
--- a/src/include/access/xact.h
+++ b/src/include/access/xact.h
@@ -458,6 +458,7 @@ extern TimestampTz GetCurrentTransactionStopTimestamp(void);
 extern void SetCurrentStatementStartTimestamp(void);
 extern int	GetCurrentTransactionNestLevel(void);
 extern bool TransactionIdIsCurrentTransactionId(TransactionId xid);
+extern int	GetTopReadOnlyTransactionNestLevel(void);
 extern void CommandCounterIncrement(void);
 extern void ForceSyncCommit(void);
 extern void StartTransactionCommand(void);
diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h
index 82988d24433..f2971485d8f 100644
--- a/src/include/catalog/catversion.h
+++ b/src/include/catalog/catversion.h
@@ -57,6 +57,6 @@
  */
 
 /*							yyyymmddN */
-#define CATALOG_VERSION_NO	202505071
+#define CATALOG_VERSION_NO	202506021
 
 #endif
diff --git a/src/include/catalog/pg_amproc.dat b/src/include/catalog/pg_amproc.dat
index 92505148998..e3477500baa 100644
--- a/src/include/catalog/pg_amproc.dat
+++ b/src/include/catalog/pg_amproc.dat
@@ -533,7 +533,7 @@
   amprocrighttype => 'box', amprocnum => '8', amproc => 'gist_box_distance' },
 { amprocfamily => 'gist/box_ops', amproclefttype => 'any',
   amprocrighttype => 'any', amprocnum => '12',
-  amproc => 'gist_stratnum_common' },
+  amproc => 'gist_translate_cmptype_common' },
 { amprocfamily => 'gist/poly_ops', amproclefttype => 'polygon',
   amprocrighttype => 'polygon', amprocnum => '1',
   amproc => 'gist_poly_consistent' },
@@ -555,7 +555,7 @@
   amproc => 'gist_poly_distance' },
 { amprocfamily => 'gist/poly_ops', amproclefttype => 'any',
   amprocrighttype => 'any', amprocnum => '12',
-  amproc => 'gist_stratnum_common' },
+  amproc => 'gist_translate_cmptype_common' },
 { amprocfamily => 'gist/circle_ops', amproclefttype => 'circle',
   amprocrighttype => 'circle', amprocnum => '1',
   amproc => 'gist_circle_consistent' },
@@ -576,7 +576,7 @@
   amproc => 'gist_circle_distance' },
 { amprocfamily => 'gist/circle_ops', amproclefttype => 'any',
   amprocrighttype => 'any', amprocnum => '12',
-  amproc => 'gist_stratnum_common' },
+  amproc => 'gist_translate_cmptype_common' },
 { amprocfamily => 'gist/tsvector_ops', amproclefttype => 'tsvector',
   amprocrighttype => 'tsvector', amprocnum => '1',
   amproc => 'gtsvector_consistent(internal,tsvector,int2,oid,internal)' },
@@ -636,7 +636,7 @@
   amproc => 'range_sortsupport' },
 { amprocfamily => 'gist/range_ops', amproclefttype => 'any',
   amprocrighttype => 'any', amprocnum => '12',
-  amproc => 'gist_stratnum_common' },
+  amproc => 'gist_translate_cmptype_common' },
 { amprocfamily => 'gist/network_ops', amproclefttype => 'inet',
   amprocrighttype => 'inet', amprocnum => '1',
   amproc => 'inet_gist_consistent' },
@@ -655,7 +655,7 @@
   amprocrighttype => 'inet', amprocnum => '9', amproc => 'inet_gist_fetch' },
 { amprocfamily => 'gist/network_ops', amproclefttype => 'any',
   amprocrighttype => 'any', amprocnum => '12',
-  amproc => 'gist_stratnum_common' },
+  amproc => 'gist_translate_cmptype_common' },
 { amprocfamily => 'gist/multirange_ops', amproclefttype => 'anymultirange',
   amprocrighttype => 'anymultirange', amprocnum => '1',
   amproc => 'multirange_gist_consistent' },
@@ -676,7 +676,7 @@
   amproc => 'range_gist_same' },
 { amprocfamily => 'gist/multirange_ops', amproclefttype => 'any',
   amprocrighttype => 'any', amprocnum => '12',
-  amproc => 'gist_stratnum_common' },
+  amproc => 'gist_translate_cmptype_common' },
 
 # gin
 { amprocfamily => 'gin/array_ops', amproclefttype => 'anyarray',
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 37a484147a8..d3d28a263fa 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -12543,9 +12543,9 @@
 
 # GiST stratnum implementations
 { oid => '8047', descr => 'GiST support',
-  proname => 'gist_stratnum_common', prorettype => 'int2',
+  proname => 'gist_translate_cmptype_common', prorettype => 'int2',
   proargtypes => 'int4',
-  prosrc => 'gist_stratnum_common' },
+  prosrc => 'gist_translate_cmptype_common' },
 
 # AIO related functions
 { oid => '9200', descr => 'information about in-progress asynchronous IOs',
diff --git a/src/include/storage/lock.h b/src/include/storage/lock.h
index 6f2108a44e8..4862b80eec3 100644
--- a/src/include/storage/lock.h
+++ b/src/include/storage/lock.h
@@ -30,7 +30,7 @@ typedef struct PGPROC PGPROC;
 
 /* GUC variables */
 extern PGDLLIMPORT int max_locks_per_xact;
-extern PGDLLIMPORT bool log_lock_failure;
+extern PGDLLIMPORT bool log_lock_failures;
 
 #ifdef LOCK_DEBUG
 extern PGDLLIMPORT int Trace_lock_oidmin;