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Continue to allow VACUUM to mark last block of index dirty

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even when there is no work to do. Further analysis required.
Revert of patch c1458cc495
This commit is contained in:
Simon Riggs 2011-11-22 09:48:06 +00:00
parent a4ffcc8e11
commit 2d2841a56c
1 changed files with 4 additions and 8 deletions
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12
src/backend/access/nbtree/nbtpage.c
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@ -732,7 +732,7 @@ _bt_page_recyclable(Page page)
* and so must be scanned anyway during replay. We always write a WAL record
* for the last block in the index, whether or not it contained any items
* to be removed. This allows us to scan right up to end of index to
* ensure correct locking. That is the only time we are called with nitems==0.
* ensure correct locking.
*/
void
_bt_delitems_vacuum(Relation rel, Buffer buf,
@ -764,8 +764,7 @@ _bt_delitems_vacuum(Relation rel, Buffer buf,
*/
opaque->btpo_flags &= ~BTP_HAS_GARBAGE;
if (nitems > 0)
MarkBufferDirty(buf);
MarkBufferDirty(buf);
/* XLOG stuff */
if (RelationNeedsWAL(rel))
@ -805,11 +804,8 @@ _bt_delitems_vacuum(Relation rel, Buffer buf,
recptr = XLogInsert(RM_BTREE_ID, XLOG_BTREE_VACUUM, rdata);
if (nitems > 0)
{
PageSetLSN(page, recptr);
PageSetTLI(page, ThisTimeLineID);
}
PageSetLSN(page, recptr);
PageSetTLI(page, ThisTimeLineID);
}
END_CRIT_SECTION();