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Add RelationOpenSmgr() calls to ensure rd_smgr is valid when we try to 

use it.  While it normally has been opened earlier during btree index
build, testing shows that it's possible for the link to be closed again
if an sinval reset occurs while the index is being built.
This commit is contained in:
Tom Lane 2006-01-07 22:45:41 +00:00
parent e58a944700
commit afa8f1971a
1 changed files with 7 additions and 1 deletions
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8
src/backend/access/nbtree/nbtsort.c
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@ -56,7 +56,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtsort.c,v 1.96 2005/11/22 18:17:06 momjian Exp $
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtsort.c,v 1.97 2006/01/07 22:45:41 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -271,6 +271,9 @@ _bt_blnewpage(uint32 level)
static void
_bt_blwritepage(BTWriteState *wstate, Page page, BlockNumber blkno)
{
/* Ensure rd_smgr is open (could have been closed by relcache flush!) */
RelationOpenSmgr(wstate->index);
/* XLOG stuff */
if (wstate->btws_use_wal)
{
@ -818,5 +821,8 @@ _bt_load(BTWriteState *wstate, BTSpool *btspool, BTSpool *btspool2)
* occurs.
*/
if (!wstate->index->rd_istemp)
{
RelationOpenSmgr(wstate->index);
smgrimmedsync(wstate->index->rd_smgr);
}
}