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.

Author: tglsfdc

contrib/pgstattuple/pgstattuple.c

@@ -1,5 +1,5 @@
 /*
- * $Header: /cvsroot/pgsql/contrib/pgstattuple/pgstattuple.c,v 1.3 2001/12/19 20:28:41 tgl Exp $
+ * $Header: /cvsroot/pgsql/contrib/pgstattuple/pgstattuple.c,v 1.3.2.1 2004/10/13 22:22:40 tgl Exp $
  *
  * Copyright (c) 2001  Tatsuo Ishii
  *
@@ -69,6 +69,9 @@ pgstattuple(PG_FUNCTION_ARGS)
 
 	while ((tuple = heap_getnext(scan, 0)))
 	{
+		uint16		sv_infomask;
+
+		sv_infomask = tuple->t_data->t_infomask;
 		if (HeapTupleSatisfiesNow(tuple->t_data))
 		{
 			tuple_len += tuple->t_len;
@@ -79,6 +82,8 @@ 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 1.129.2.2 2003/01/26 23:09:37 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.129.2.3 2004/10/13 22:22:41 tgl Exp $
  *
  *
  * INTERFACE ROUTINES
@@ -1155,6 +1155,7 @@ heap_delete(Relation relation, ItemPointer tid, ItemPointer ctid)
 	PageHeader	dp;
 	Buffer		buffer;
 	int			result;
+	uint16		sv_infomask;
 
 	/* increment access statistics */
 	IncrHeapAccessStat(local_delete);
@@ -1178,7 +1179,10 @@ heap_delete(Relation relation, ItemPointer tid, ItemPointer ctid)
 	tp.t_tableOid = relation->rd_id;
 
 l1:
+	sv_infomask = tp.t_data->t_infomask;
 	result = HeapTupleSatisfiesUpdate(&tp);
+	if (sv_infomask != tp.t_data->t_infomask)
+		SetBufferCommitInfoNeedsSave(buffer);
 
 	if (result == HeapTupleInvisible)
 	{
@@ -1195,7 +1199,7 @@ heap_delete(Relation relation, ItemPointer tid, ItemPointer ctid)
 		XactLockTableWait(xwait);
 
 		LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);
-		if (TransactionIdDidAbort(xwait))
+		if (!TransactionIdDidCommit(xwait))
 			goto l1;
 
 		/*
@@ -1345,6 +1349,7 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
 	Size		newtupsize,
 				pagefree;
 	int			result;
+	uint16		sv_infomask;
 
 	/* increment access statistics */
 	IncrHeapAccessStat(local_replace);
@@ -1373,7 +1378,10 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
 	 */
 
 l2:
+	sv_infomask = oldtup.t_data->t_infomask;
 	result = HeapTupleSatisfiesUpdate(&oldtup);
+	if (sv_infomask != oldtup.t_data->t_infomask)
+		SetBufferCommitInfoNeedsSave(buffer);
 
 	if (result == HeapTupleInvisible)
 	{
@@ -1390,7 +1398,7 @@ heap_update(Relation relation, ItemPointer otid, HeapTuple newtup,
 		XactLockTableWait(xwait);
 
 		LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE);
-		if (TransactionIdDidAbort(xwait))
+		if (!TransactionIdDidCommit(xwait))
 			goto l2;
 
 		/*
@@ -1651,6 +1659,7 @@ heap_mark4update(Relation relation, HeapTuple tuple, Buffer *buffer)
 	ItemId		lp;
 	PageHeader	dp;
 	int			result;
+	uint16		sv_infomask;
 
 	/* increment access statistics */
 	IncrHeapAccessStat(local_mark4update);
@@ -1670,7 +1679,10 @@ heap_mark4update(Relation relation, HeapTuple tuple, Buffer *buffer)
 	tuple->t_len = ItemIdGetLength(lp);
 
 l3:
+	sv_infomask = tuple->t_data->t_infomask;
 	result = HeapTupleSatisfiesUpdate(tuple);
+	if (sv_infomask != tuple->t_data->t_infomask)
+		SetBufferCommitInfoNeedsSave(*buffer);
 
 	if (result == HeapTupleInvisible)
 	{
@@ -1687,7 +1699,7 @@ heap_mark4update(Relation relation, HeapTuple tuple, Buffer *buffer)
 		XactLockTableWait(xwait);
 
 		LockBuffer(*buffer, BUFFER_LOCK_EXCLUSIVE);
-		if (TransactionIdDidAbort(xwait))
+		if (!TransactionIdDidCommit(xwait))
 			goto l3;
 
 		/*