diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/access/nbtree/nbtpage.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/backend/access/nbtree/nbtpage.c b/src/backend/access/nbtree/nbtpage.c index f9b3e1feafe..6f6e676ec08 100644 --- a/src/backend/access/nbtree/nbtpage.c +++ b/src/backend/access/nbtree/nbtpage.c @@ -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. + * ensure correct locking. That is the only time we are called with nitems==0. */ void _bt_delitems_vacuum(Relation rel, Buffer buf, @@ -764,7 +764,8 @@ _bt_delitems_vacuum(Relation rel, Buffer buf, */ opaque->btpo_flags &= ~BTP_HAS_GARBAGE; - MarkBufferDirty(buf); + if (nitems > 0) + MarkBufferDirty(buf); /* XLOG stuff */ if (RelationNeedsWAL(rel)) @@ -804,8 +805,11 @@ _bt_delitems_vacuum(Relation rel, Buffer buf, recptr = XLogInsert(RM_BTREE_ID, XLOG_BTREE_VACUUM, rdata); - PageSetLSN(page, recptr); - PageSetTLI(page, ThisTimeLineID); + if (nitems > 0) + { + PageSetLSN(page, recptr); + PageSetTLI(page, ThisTimeLineID); + } } END_CRIT_SECTION(); |