Index: b/usr/src/uts/common/fs/zfs/zil.c
===================================================================
--- a/usr/src/uts/common/fs/zfs/zil.c	2014-03-10 12:36:50.700601946 +0400
+++ b/usr/src/uts/common/fs/zfs/zil.c	2014-03-10 12:37:15.693154121 +0400
@@ -1347,7 +1347,7 @@
 	 * created a bad performance problem.
 	 */
 	if (taskq_dispatch(zilog->zl_clean_taskq,
-	    (void (*)(void *))zil_itxg_clean, clean_me, TQ_NOSLEEP) == NULL)
+	    (void (*)(void *))zil_itxg_clean, clean_me, TQ_NOSLEEP) == 0)
 		zil_itxg_clean(clean_me);
 }