From 15c121b3ed7eb2f290e19533e41ccca734d23574 Mon Sep 17 00:00:00 2001 From: Heikki Linnakangas Date: Tue, 30 Sep 2008 10:52:14 +0000 Subject: Rewrite the FSM. Instead of relying on a fixed-size shared memory segment, the free space information is stored in a dedicated FSM relation fork, with each relation (except for hash indexes; they don't use FSM). This eliminates the max_fsm_relations and max_fsm_pages GUC options; remove any trace of them from the backend, initdb, and documentation. Rewrite contrib/pg_freespacemap to match the new FSM implementation. Also introduce a new variant of the get_raw_page(regclass, int4, int4) function in contrib/pageinspect that let's you to return pages from any relation fork, and a new fsm_page_contents() function to inspect the new FSM pages. --- src/backend/access/transam/xlogutils.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'src/backend/access/transam/xlogutils.c') diff --git a/src/backend/access/transam/xlogutils.c b/src/backend/access/transam/xlogutils.c index 59124e349e4..9abcce65483 100644 --- a/src/backend/access/transam/xlogutils.c +++ b/src/backend/access/transam/xlogutils.c @@ -11,7 +11,7 @@ * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/backend/access/transam/xlogutils.c,v 1.58 2008/08/11 11:05:10 heikki Exp $ + * $PostgreSQL: pgsql/src/backend/access/transam/xlogutils.c,v 1.59 2008/09/30 10:52:11 heikki Exp $ * *------------------------------------------------------------------------- */ @@ -359,6 +359,7 @@ CreateFakeRelcacheEntry(RelFileNode rnode) rel->rd_lockInfo.lockRelId.relId = rnode.relNode; rel->rd_targblock = InvalidBlockNumber; + rel->rd_fsm_nblocks_cache = InvalidBlockNumber; rel->rd_smgr = NULL; return rel; -- cgit v1.2.3