Fix obsolete comments that I neglected to update in a previous patch.

Fujii Masao

src/backend/access/transam/xlog.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.414 2010/05/27 00:38:39 heikki Exp $
+ * $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.415 2010/06/02 09:28:44 heikki Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -2609,8 +2609,8 @@ XLogFileOpen(uint32 log, uint32 seg)
 /*
  * Open a logfile segment for reading (during recovery).
  *
- * If fromArchive is true, the segment is retrieved from archive, otherwise
- * it's read from pg_xlog.
+ * If source = XLOG_FROM_ARCHIVE, the segment is retrieved from archive.
+ * If source = XLOG_FROM_PG_XLOG, it's read from pg_xlog.
  */
 static int
 XLogFileRead(uint32 log, uint32 seg, int emode, TimeLineID tli,
@@ -2673,8 +2673,6 @@ XLogFileRead(uint32 log, uint32 seg, int emode, TimeLineID tli,
  * Open a logfile segment for reading (during recovery).
  *
  * This version searches for the segment with any TLI listed in expectedTLIs.
- * If not in StandbyMode and fromArchive is true, the segment is also
- * searched in pg_xlog if not found in archive.
  */
 static int
 XLogFileReadAnyTLI(uint32 log, uint32 seg, int emode, int sources)