--- a/usr/src/uts/common/fs/zfs/vdev_label.c	Tue Jan 27 15:52:26 2009 -0800
+++ b/usr/src/uts/common/fs/zfs/vdev_label.c	Tue Jan 27 16:26:14 2009 -0800
@@ -19,7 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
@@ -961,7 +961,7 @@
 	for (vd = list_head(dl); vd != NULL; vd = list_next(dl, vd)) {
 		uint64_t *good_writes = kmem_zalloc(sizeof (uint64_t),
 		    KM_SLEEP);
-		zio_t *vio = zio_null(zio, spa,
+		zio_t *vio = zio_null(zio, spa, NULL,
 		    (vd->vdev_islog || vd->vdev_aux != NULL) ?
 		    vdev_label_sync_ignore_done : vdev_label_sync_top_done,
 		    good_writes, flags);