diff -r d149b2034cfc -r 8c712bbb18ea usr/src/uts/common/fs/zfs/dmu_traverse.c
--- a/usr/src/uts/common/fs/zfs/dmu_traverse.c	Sat Aug 07 15:19:49 2010 -0700
+++ b/usr/src/uts/common/fs/zfs/dmu_traverse.c	Sat Aug 07 19:27:15 2010 -0600
@@ -162,6 +162,8 @@
 	if (td->td_flags & TRAVERSE_PRE) {
 		err = td->td_func(td->td_spa, NULL, bp, pbuf, zb, dnp,
 		    td->td_arg);
+		if (err == TRAVERSE_VISIT_NO_CHILDREN)
+			return (0);
 		if (err)
 			return (err);
 	}