From 0e1c4b7d974b9ff3b1cd62a9689a8560a8bab60e Mon Sep 17 00:00:00 2001
From: Robert Haas <rhaas@postgresql.org>
Date: Tue, 8 Nov 2011 08:11:25 -0500
Subject: [PATCH] Rewrite comment for slightly greater accuracy.
Per an observation from Thom Brown that the old version contained a typo.
---
src/backend/commands/vacuumlazy.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/backend/commands/vacuumlazy.c b/src/backend/commands/vacuumlazy.c
index bbf8b8d084d..38deddc47c0 100644
--- a/src/backend/commands/vacuumlazy.c
+++ b/src/backend/commands/vacuumlazy.c
@@ -488,8 +488,9 @@ lazy_scan_heap(Relation onerel, LVRelStats *vacrelstats,
if (!ConditionalLockBufferForCleanup(buf))
{
/*
- * It's OK to skip vacuuming a page, as long as its not got data
- * that needs to be cleaned for wraparound avoidance.
+ * If we're not scanning the whole relation to guard against XID
+ * wraparound, it's OK to skip vacuuming a page. The next vacuum
+ * will clean it up.
*/
if (!scan_all)
{
--
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