diff options
Diffstat (limited to 'src/backend/access/hash/hashpage.c')
| -rw-r--r-- | src/backend/access/hash/hashpage.c | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/src/backend/access/hash/hashpage.c b/src/backend/access/hash/hashpage.c index a27d83d4fff..29d861efb86 100644 --- a/src/backend/access/hash/hashpage.c +++ b/src/backend/access/hash/hashpage.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/access/hash/hashpage.c,v 1.67 2007/05/03 16:45:58 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/access/hash/hashpage.c,v 1.68 2007/05/30 20:11:51 tgl Exp $ * * NOTES * Postgres hash pages look like ordinary relation pages. The opaque @@ -215,6 +215,34 @@ _hash_getnewbuf(Relation rel, BlockNumber blkno) } /* + * _hash_getbuf_with_strategy() -- Get a buffer with nondefault strategy. + * + * This is identical to _hash_getbuf() but also allows a buffer access + * strategy to be specified. We use this for VACUUM operations. + */ +Buffer +_hash_getbuf_with_strategy(Relation rel, BlockNumber blkno, + int access, int flags, + BufferAccessStrategy bstrategy) +{ + Buffer buf; + + if (blkno == P_NEW) + elog(ERROR, "hash AM does not use P_NEW"); + + buf = ReadBufferWithStrategy(rel, blkno, bstrategy); + + if (access != HASH_NOLOCK) + LockBuffer(buf, access); + + /* ref count and lock type are correct */ + + _hash_checkpage(rel, buf, flags); + + return buf; +} + +/* * _hash_relbuf() -- release a locked buffer. * * Lock and pin (refcount) are both dropped. @@ -840,5 +868,5 @@ _hash_splitbucket(Relation rel, _hash_wrtbuf(rel, obuf); _hash_wrtbuf(rel, nbuf); - _hash_squeezebucket(rel, obucket, start_oblkno); + _hash_squeezebucket(rel, obucket, start_oblkno, NULL); } |