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Tweak hash index AM to use the new ReadOrZeroBuffer bufmgr API when fetching

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pages it intends to zero immediately.  Just to show there is some use for that
function besides WAL recovery :-).
Along the way, fold _hash_checkpage and _hash_pageinit calls into _hash_getbuf
and friends, instead of expecting callers to do that separately.
This commit is contained in:
Tom Lane
2007-05-03 16:45:58 +00:00
parent 1aefa0489f
commit 0fef38da21
8 changed files with 110 additions and 85 deletions
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4
contrib/pgstattuple/pgstattuple.c
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@ -1,5 +1,5 @@
/*
* $PostgreSQL: pgsql/contrib/pgstattuple/pgstattuple.c,v 1.26 2007/03/25 19:45:13 tgl Exp $
* $PostgreSQL: pgsql/contrib/pgstattuple/pgstattuple.c,v 1.27 2007/05/03 16:45:58 tgl Exp $
*
* Copyright (c) 2001,2002 Tatsuo Ishii
*
@ -360,7 +360,7 @@ pgstat_hash_page(pgstattuple_type * stat, Relation rel, BlockNumber blkno)
Page page;
_hash_getlock(rel, blkno, HASH_SHARE);
buf = _hash_getbuf(rel, blkno, HASH_READ);
buf = _hash_getbuf(rel, blkno, HASH_READ, 0);
page = BufferGetPage(buf);
if (PageGetSpecialSize(page) == MAXALIGN(sizeof(HashPageOpaqueData)))