diff options
| author | Heikki Linnakangas | 2008-09-30 10:52:14 +0000 |
|---|---|---|
| committer | Heikki Linnakangas | 2008-09-30 10:52:14 +0000 |
| commit | 15c121b3ed7eb2f290e19533e41ccca734d23574 (patch) | |
| tree | b60226d720f87b82b5b44647e3d3031081cdfb07 /src/include/storage/relfilenode.h | |
| parent | 2dbc0ca937f8ba9c76866a99fd04866232acea95 (diff) | |
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/include/storage/relfilenode.h')
| -rw-r--r-- | src/include/storage/relfilenode.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/include/storage/relfilenode.h b/src/include/storage/relfilenode.h index 8ac8147ed93..571f261c3d8 100644 --- a/src/include/storage/relfilenode.h +++ b/src/include/storage/relfilenode.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/storage/relfilenode.h,v 1.16 2008/08/11 11:05:11 heikki Exp $ + * $PostgreSQL: pgsql/src/include/storage/relfilenode.h,v 1.17 2008/09/30 10:52:14 heikki Exp $ * *------------------------------------------------------------------------- */ @@ -23,11 +23,12 @@ typedef enum ForkNumber { InvalidForkNumber = -1, - MAIN_FORKNUM = 0 - /* NOTE: change NUM_FORKS below when you add new forks */ + MAIN_FORKNUM = 0, + FSM_FORKNUM + /* NOTE: change MAX_FORKNUM below when you add new forks */ } ForkNumber; -#define MAX_FORKNUM MAIN_FORKNUM +#define MAX_FORKNUM FSM_FORKNUM /* * RelFileNode must provide all that we need to know to physically access |