diff options
| -rw-r--r-- | src/backend/commands/vacuum.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c index b15fcc1059f..9fd7a7e6958 100644 --- a/src/backend/commands/vacuum.c +++ b/src/backend/commands/vacuum.c @@ -13,7 +13,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.342 2006/11/05 22:42:08 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/commands/vacuum.c,v 1.342.2.1 2007/03/08 17:03:43 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -715,10 +715,20 @@ vac_update_relstats(Oid relid, BlockNumber num_pages, double num_tuples, } /* - * If anything changed, write out the tuple + * If anything changed, write out the tuple. Even if nothing changed, + * force relcache invalidation so all backends reset their rd_targblock + * --- otherwise it might point to a page we truncated away. */ if (dirty) + { heap_inplace_update(rd, ctup); + /* the above sends a cache inval message */ + } + else + { + /* no need to change tuple, but force relcache inval anyway */ + CacheInvalidateRelcacheByTuple(ctup); + } heap_close(rd, RowExclusiveLock); } |