Replace nonsense comment with a relevant one.

Per report from Alexander Lakhin.

Discussion: http://postgr.es/m/061cccf7-0cac-804f-4c2a-9d6da8e3848b@gmail.com

diff --git a/src/backend/postmaster/walsummarizer.c b/src/backend/postmaster/walsummarizer.c
index 81e5ac828307251f2c1932e71acf03d61872340e..9b5d3cdeb00855b1df237c5f71f5a9e872468259 100644 (file)
--- a/src/backend/postmaster/walsummarizer.c
+++ b/src/backend/postmaster/walsummarizer.c
@@ -1314,7 +1314,7 @@ summarizer_wait_for_wal(void)
 }
 
 /*
- * Most recent RedoRecPtr value observed by RemoveOldWalSummaries.
+ * Remove WAL summaries whose mtimes are older than wal_summary_keep_time.
  */
 static void
 MaybeRemoveOldWalSummaries(void)