diff options
Diffstat (limited to 'src/backend/access/transam/clog.c')
| -rw-r--r-- | src/backend/access/transam/clog.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/backend/access/transam/clog.c b/src/backend/access/transam/clog.c index 69b6ef352b2..33b5ca2d36f 100644 --- a/src/backend/access/transam/clog.c +++ b/src/backend/access/transam/clog.c @@ -44,9 +44,10 @@ * * Note: because TransactionIds are 32 bits and wrap around at 0xFFFFFFFF, * CLOG page numbering also wraps around at 0xFFFFFFFF/CLOG_XACTS_PER_PAGE, - * and CLOG segment numbering at 0xFFFFFFFF/CLOG_XACTS_PER_SEGMENT. We need - * take no explicit notice of that fact in this module, except when comparing - * segment and page numbers in TruncateCLOG (see CLOGPagePrecedes). + * and CLOG segment numbering at + * 0xFFFFFFFF/CLOG_XACTS_PER_PAGE/SLRU_PAGES_PER_SEGMENT. We need take no + * explicit notice of that fact in this module, except when comparing segment + * and page numbers in TruncateCLOG (see CLOGPagePrecedes). */ /* We need two bits per xact, so four xacts fit in a byte */ |