Repair possible failure to update hint bits back to disk, per

http://archives.postgresql.org/pgsql-hackers/2004-10/msg00464.php.
I plan a more permanent fix in HEAD, but for the back branches it seems
best to just touch the places that actually have a problem.

contrib/pgstattuple/pgstattuple.c

@@ -1,5 +1,5 @@
 /*
- * $Header: /cvsroot/pgsql/contrib/pgstattuple/pgstattuple.c,v 1.9 2002/09/04 20:31:08 momjian Exp $
+ * $Header: /cvsroot/pgsql/contrib/pgstattuple/pgstattuple.c,v 1.9.2.1 2004/10/13 22:22:20 tgl Exp $
  *
  * Copyright (c) 2001,2002	Tatsuo Ishii
  *
@@ -103,6 +103,9 @@ pgstattuple(PG_FUNCTION_ARGS)
 	/* scan the relation */
 	while ((tuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
 	{
+		uint16		sv_infomask;
+
+		sv_infomask = tuple->t_data->t_infomask;
 		if (HeapTupleSatisfiesNow(tuple->t_data))
 		{
 			tuple_len += tuple->t_len;
@@ -113,6 +116,8 @@ pgstattuple(PG_FUNCTION_ARGS)
 			dead_tuple_len += tuple->t_len;
 			dead_tuple_count++;
 		}
+		if (sv_infomask != tuple->t_data->t_infomask)
+			SetBufferCommitInfoNeedsSave(scan->rs_cbuf);
 
 		/*
 		 * To avoid physically reading the table twice, try to do the

src/backend/access/heap/heapam.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.149 2002/09/26 22:46:29 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.149.2.1 2004/10/13 22:22:21 tgl Exp $
  *
  *
  * INTERFACE ROUTINES
@@ -1271,6 +1271,7 @@ heap_delete(Relation relation, ItemPointer tid,
 	PageHeader	dp;
 	Buffer		buffer;
 	int			result;
+	uint16		sv_infomask;
 
 	/* increment access statistics */
 	IncrHeapAccessStat(local_delete);
@@ -1294,7 +1295,10 @@ heap_delete(Relation relation, ItemPointer tid,
 	tp.t_tableOid = relation->rd_id;
 
 l1:
+	sv_infomask = tp.t_data->t_infomask;
 	result = HeapTupleSatisfiesUpdate(&tp, cid);
+	if (sv_infomask != tp.t_data->t_infomask)
+		SetBufferCommitInfoNeedsSave(buffer);
 
 	if (result == HeapTupleInvisible)
 	{
@@ -1311,7 +1315,7 @@ l1:
 		XactLockTableWait(xwait);
 
 		LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);
-		if (TransactionIdDidAbort(xwait))
+		if (!TransactionIdDidCommit(xwait))
 			goto l1;
 
 		/*
@@ -1470,6 +1474,7 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
 	Size		newtupsize,
 				pagefree;
 	int			result;
+	uint16		sv_infomask;
 
 	/* increment access statistics */
 	IncrHeapAccessStat(local_replace);
@@ -1498,7 +1503,10 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
 	 */
 
 l2:
+	sv_infomask = oldtup.t_data->t_infomask;
 	result = HeapTupleSatisfiesUpdate(&oldtup, cid);
+	if (sv_infomask != oldtup.t_data->t_infomask)
+		SetBufferCommitInfoNeedsSave(buffer);
 
 	if (result == HeapTupleInvisible)
 	{
@@ -1515,7 +1523,7 @@ l2:
 		XactLockTableWait(xwait);
 
 		LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);
-		if (TransactionIdDidAbort(xwait))
+		if (!TransactionIdDidCommit(xwait))
 			goto l2;
 
 		/*
@@ -1795,6 +1803,7 @@ heap_mark4update(Relation relation, HeapTuple tuple, Buffer *buffer,
 	ItemId		lp;
 	PageHeader	dp;
 	int			result;
+	uint16		sv_infomask;
 
 	/* increment access statistics */
 	IncrHeapAccessStat(local_mark4update);
@@ -1814,7 +1823,10 @@ heap_mark4update(Relation relation, HeapTuple tuple, Buffer *buffer,
 	tuple->t_len = ItemIdGetLength(lp);
 
 l3:
+	sv_infomask = tuple->t_data->t_infomask;
 	result = HeapTupleSatisfiesUpdate(tuple, cid);
+	if (sv_infomask != tuple->t_data->t_infomask)
+		SetBufferCommitInfoNeedsSave(*buffer);
 
 	if (result == HeapTupleInvisible)
 	{
@@ -1831,7 +1843,7 @@ l3:
 		XactLockTableWait(xwait);
 
 		LockBuffer(*buffer, BUFFER_LOCK_EXCLUSIVE);
-		if (TransactionIdDidAbort(xwait))
+		if (!TransactionIdDidCommit(xwait))
 			goto l3;
 
 		/*

src/backend/utils/adt/ri_triggers.c

@@ -17,7 +17,7 @@
  *
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  *
- * $Header: /cvsroot/pgsql/src/backend/utils/adt/ri_triggers.c,v 1.43.2.4 2003/10/31 03:57:41 wieck Exp $
+ * $Header: /cvsroot/pgsql/src/backend/utils/adt/ri_triggers.c,v 1.43.2.5 2004/10/13 22:22:22 tgl Exp $
  *
  * ----------
  */
@@ -241,6 +241,9 @@ RI_FKey_check(PG_FUNCTION_ARGS)
 	 * We should not even consider checking the row if it is no longer
 	 * valid since it was either deleted (doesn't matter) or updated (in
 	 * which case it'll be checked with its final values).
+	 *
+	 * Note: we need not SetBufferCommitInfoNeedsSave() here since the
+	 * new tuple's commit state can't possibly change.
 	 */
 	if (new_row)
 	{