Index: src/backend/access/transam/xlog.c
===================================================================
RCS file: /projects/cvsroot/pgsql/src/backend/access/transam/xlog.c,v
retrieving revision 1.324
diff -u -3 -p -r1.324 xlog.c
--- src/backend/access/transam/xlog.c	17 Dec 2008 01:39:03 -0000	1.324
+++ src/backend/access/transam/xlog.c	22 Dec 2008 16:28:00 -0000
@@ -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();
 			}
 		}
 	}
Index: src/backend/utils/probes.d
===================================================================
RCS file: /projects/cvsroot/pgsql/src/backend/utils/probes.d,v
retrieving revision 1.4
diff -u -3 -p -r1.4 probes.d
--- src/backend/utils/probes.d	17 Dec 2008 01:39:04 -0000	1.4
+++ src/backend/utils/probes.d	22 Dec 2008 16:28:01 -0000
@@ -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();
 };