From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Thu, 5 Apr 2001 16:55:21 +0000 (+0000)
Subject: Fix comment that Vadim found confusing.
X-Git-Url: http://waps.l3s.uni-hannover.de/gitweb/?a=commitdiff_plain;h=4b3995dd927d452e33b4b368389ea4435e99b033;p=users%2Fbernd%2Fpostgres.git

Fix comment that Vadim found confusing.
---

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 5eb5896034..4ef37f00fa 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -2467,6 +2467,7 @@ StartupXLOG(void)
 			Insert->currpage->xlp_sui = ThisStartUpID;
 		else
 			Insert->currpage->xlp_sui = ThisStartUpID + 1;
+		/* rest of buffer was zeroed in XLOGShmemInit */
 	}
 	else
 	{
@@ -2475,10 +2476,8 @@ StartupXLOG(void)
 			((EndOfLog.xrecoff - 1) / BLCKSZ + 1) * BLCKSZ;
 		/*
 		 * Tricky point here: readBuf contains the *last* block that the
-		 * LastRec record spans, not the one it starts in, which is what we
-		 * want.
-		 *
-		 * XXX - why would we want block LastRec starts in?
+		 * LastRec record spans, not the one it starts in.  The last block
+		 * is indeed the one we want to use.
 		 */
 		Assert(readOff == (XLogCtl->xlblocks[0].xrecoff - BLCKSZ) % XLogSegSize);
 		memcpy((char *) Insert->currpage, readBuf, BLCKSZ);