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| author | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2008-09-30 10:52:14 +0000 |
|---|---|---|
| committer | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2008-09-30 10:52:14 +0000 |
| commit | 15c121b3ed7eb2f290e19533e41ccca734d23574 (patch) | |
| tree | b60226d720f87b82b5b44647e3d3031081cdfb07 /src/backend/access/heap/heapam.c | |
| parent | 2dbc0ca937f8ba9c76866a99fd04866232acea95 (diff) | |
| download | postgresql-15c121b3ed7eb2f290e19533e41ccca734d23574.tar.gz postgresql-15c121b3ed7eb2f290e19533e41ccca734d23574.zip | |
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.
Diffstat (limited to 'src/backend/access/heap/heapam.c')
| -rw-r--r-- | src/backend/access/heap/heapam.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c index eb9f8701ae1..0fd61fe9cec 100644 --- a/src/backend/access/heap/heapam.c +++ b/src/backend/access/heap/heapam.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/access/heap/heapam.c,v 1.263 2008/09/11 14:01:09 alvherre Exp $ + * $PostgreSQL: pgsql/src/backend/access/heap/heapam.c,v 1.264 2008/09/30 10:52:10 heikki Exp $ * * * INTERFACE ROUTINES @@ -4721,6 +4721,9 @@ heap_sync(Relation rel) /* FlushRelationBuffers will have opened rd_smgr */ smgrimmedsync(rel->rd_smgr, MAIN_FORKNUM); + /* sync FSM as well */ + smgrimmedsync(rel->rd_smgr, FSM_FORKNUM); + /* toast heap, if any */ if (OidIsValid(rel->rd_rel->reltoastrelid)) { @@ -4729,6 +4732,7 @@ heap_sync(Relation rel) toastrel = heap_open(rel->rd_rel->reltoastrelid, AccessShareLock); FlushRelationBuffers(toastrel); smgrimmedsync(toastrel->rd_smgr, MAIN_FORKNUM); + smgrimmedsync(toastrel->rd_smgr, FSM_FORKNUM); heap_close(toastrel, AccessShareLock); } } |