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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/commands/dbcommands.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/commands/dbcommands.c')
| -rw-r--r-- | src/backend/commands/dbcommands.c | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/src/backend/commands/dbcommands.c b/src/backend/commands/dbcommands.c index 29dc0733a73..37c2f45c727 100644 --- a/src/backend/commands/dbcommands.c +++ b/src/backend/commands/dbcommands.c @@ -13,7 +13,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/dbcommands.c,v 1.212 2008/09/23 10:58:03 heikki Exp $ + * $PostgreSQL: pgsql/src/backend/commands/dbcommands.c,v 1.213 2008/09/30 10:52:12 heikki Exp $ * *------------------------------------------------------------------------- */ @@ -43,7 +43,6 @@ #include "postmaster/bgwriter.h" #include "storage/bufmgr.h" #include "storage/lmgr.h" -#include "storage/freespace.h" #include "storage/ipc.h" #include "storage/procarray.h" #include "storage/smgr.h" @@ -797,11 +796,6 @@ dropdb(const char *dbname, bool missing_ok) DropDatabaseBuffers(db_id); /* - * Also, clean out any entries in the shared free space map. - */ - FreeSpaceMapForgetDatabase(db_id); - - /* * Tell the stats collector to forget it immediately, too. */ pgstat_drop_database(db_id); @@ -1640,9 +1634,6 @@ dbase_redo(XLogRecPtr lsn, XLogRecord *record) /* Drop pages for this database that are in the shared buffer cache */ DropDatabaseBuffers(xlrec->db_id); - /* Also, clean out any entries in the shared free space map */ - FreeSpaceMapForgetDatabase(xlrec->db_id); - /* Also, clean out any fsync requests that might be pending in md.c */ ForgetDatabaseFsyncRequests(xlrec->db_id); |