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Blowaway relation buffers from buffer pool before truncation.

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This commit is contained in:
Vadim B. Mikheev 1997-09-22 07:12:33 +00:00
parent 94e52d38df
commit 708f67c7a9
1 changed files with 10 additions and 1 deletions
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11
src/backend/commands/vacuum.c
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@ -7,7 +7,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.47 1997/09/12 04:07:30 momjian Exp $ * $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.48 1997/09/22 07:12:33 vadim Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -56,6 +56,8 @@
#include <port-protos.h> #include <port-protos.h>
extern int BlowawayRelationBuffers(Relation rdesc, BlockNumber block);
bool VacuumRunning = false; bool VacuumRunning = false;
static Portal vc_portal; static Portal vc_portal;
@ -1394,6 +1396,9 @@ Elapsed %u/%u sec.",
/* truncate relation */ /* truncate relation */
if (blkno < nblocks) if (blkno < nblocks)
{ {
i = BlowawayRelationBuffers(onerel, blkno);
if (i < 0)
elog (FATAL, "VACUUM (vc_rpfheap): BlowawayRelationBuffers returned %d", i);
blkno = smgrtruncate(onerel->rd_rel->relsmgr, onerel, blkno); blkno = smgrtruncate(onerel->rd_rel->relsmgr, onerel, blkno);
Assert(blkno >= 0); Assert(blkno >= 0);
vacrelstats->npages = blkno; /* set new number of blocks */ vacrelstats->npages = blkno; /* set new number of blocks */
@ -1466,6 +1471,10 @@ vc_vacheap(VRelStats *vacrelstats, Relation onerel, VPageList Vvpl)
*/ */
FlushBufferPool(!TransactionFlushEnabled()); FlushBufferPool(!TransactionFlushEnabled());
i = BlowawayRelationBuffers(onerel, nblocks);
if (i < 0)
elog (FATAL, "VACUUM (vc_vacheap): BlowawayRelationBuffers returned %d", i);
nblocks = smgrtruncate(onerel->rd_rel->relsmgr, onerel, nblocks); nblocks = smgrtruncate(onerel->rd_rel->relsmgr, onerel, nblocks);
Assert(nblocks >= 0); Assert(nblocks >= 0);
vacrelstats->npages = nblocks; /* set new number of blocks */ vacrelstats->npages = nblocks; /* set new number of blocks */