diff options
Diffstat (limited to 'src/backend/utils/time/tqual.c')
| -rw-r--r-- | src/backend/utils/time/tqual.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/backend/utils/time/tqual.c b/src/backend/utils/time/tqual.c index 202f2c3007..292caabb1f 100644 --- a/src/backend/utils/time/tqual.c +++ b/src/backend/utils/time/tqual.c @@ -50,7 +50,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/time/tqual.c,v 1.115 2010/01/02 16:57:58 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/utils/time/tqual.c,v 1.116 2010/02/08 04:33:54 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -91,9 +91,12 @@ static bool XidInMVCCSnapshot(TransactionId xid, Snapshot snapshot); * code in heapam.c relies on that!) * * Also, if we are cleaning up HEAP_MOVED_IN or HEAP_MOVED_OFF entries, then - * we can always set the hint bits, since VACUUM FULL always uses synchronous - * commits and doesn't move tuples that weren't previously hinted. (This is - * not known by this subroutine, but is applied by its callers.) + * we can always set the hint bits, since old-style VACUUM FULL always used + * synchronous commits and didn't move tuples that weren't previously + * hinted. (This is not known by this subroutine, but is applied by its + * callers.) Note: old-style VACUUM FULL is gone, but we have to keep this + * module's support for MOVED_OFF/MOVED_IN flag bits for as long as we + * support in-place update from pre-9.0 databases. * * Normal commits may be asynchronous, so for those we need to get the LSN * of the transaction and then check whether this is flushed. |