diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 2368337c14ec0ca32dfe2a383ed4e77875c1dc74..47041c4b15b1152ba8aa821d963e18f05a2ea96d 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.324 2008/12/17 01:39:03 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/access/transam/xlog.c,v 1.325 2008/12/24 20:41:29 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1318,14 +1318,14 @@ AdvanceXLInsertBuffer(bool new_segment)
 				 * Have to write buffers while holding insert lock. This is
 				 * not good, so only write as much as we absolutely must.
 				 */
-				TRACE_POSTGRESQL_WAL_BUFFER_WRITE_START();
+				TRACE_POSTGRESQL_WAL_BUFFER_WRITE_DIRTY_START();
 				WriteRqst.Write = OldPageRqstPtr;
 				WriteRqst.Flush.xlogid = 0;
 				WriteRqst.Flush.xrecoff = 0;
 				XLogWrite(WriteRqst, false, false);
 				LWLockRelease(WALWriteLock);
 				Insert->LogwrtResult = LogwrtResult;
-				TRACE_POSTGRESQL_WAL_BUFFER_WRITE_DONE();
+				TRACE_POSTGRESQL_WAL_BUFFER_WRITE_DIRTY_DONE();
 			}
 		}
 	}
diff --git a/src/backend/utils/probes.d b/src/backend/utils/probes.d
index e03154c514497845328a07d16a83b42fa1348ee6..a5f52431f7c5a8031bf507c7f6ec14a7e87c4e8d 100644
--- a/src/backend/utils/probes.d
+++ b/src/backend/utils/probes.d
@@ -3,7 +3,7 @@
  *
  *	Copyright (c) 2006-2008, PostgreSQL Global Development Group
  *
- *	$PostgreSQL: pgsql/src/backend/utils/probes.d,v 1.4 2008/12/17 01:39:04 momjian Exp $
+ *	$PostgreSQL: pgsql/src/backend/utils/probes.d,v 1.5 2008/12/24 20:41:29 momjian Exp $
  * ----------
  */
 
@@ -89,6 +89,6 @@ provider postgresql {
 
 	probe xlog__insert(unsigned char, unsigned char);
 	probe xlog__switch();
-	probe wal__buffer__write__start();
-	probe wal__buffer__write__done();
+	probe wal__buffer__write__dirty__start();
+	probe wal__buffer__write__dirty__done();
 };