From 855ffa0be0955399d40e3adb19eb0f7bc30d6cc4 Mon Sep 17 00:00:00 2001
From: "Vadim B. Mikheev" <vadim4o@yahoo.com>
Date: Wed, 1 Nov 2000 20:39:58 +0000
Subject: [PATCH] Forgot to check page LSN and unlock buffer in
btree_xlog_delete - fixed. (Thanks to Tatsuo Ishii for finding bug)
---
src/backend/access/nbtree/nbtree.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/src/backend/access/nbtree/nbtree.c b/src/backend/access/nbtree/nbtree.c
index 3dbbc78b035..fb437ac99f4 100644
--- a/src/backend/access/nbtree/nbtree.c
+++ b/src/backend/access/nbtree/nbtree.c
@@ -12,7 +12,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtree.c,v 1.68 2000/10/29 18:33:40 vadim Exp $
+ * $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtree.c,v 1.69 2000/11/01 20:39:58 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1018,8 +1018,18 @@ btree_xlog_delete(bool redo, XLogRecPtr lsn, XLogRecord *record)
if (PageIsNew((PageHeader) page))
elog(STOP, "btree_delete_redo: uninitialized page");
+ if (XLByteLE(lsn, PageGetLSN(page)))
+ {
+ UnlockAndReleaseBuffer(buffer);
+ return;
+ }
+
PageIndexTupleDelete(page, ItemPointerGetOffsetNumber(&(xlrec->target.tid)));
+ PageSetLSN(page, lsn);
+ PageSetSUI(page, ThisStartUpID);
+ UnlockAndWriteBuffer(buffer);
+
return;
}
--
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