--- //depot/projects/smpng/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_dir.c	2008/11/18 23:25:45
+++ //depot/user/jhb/lock/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_dir.c	2009/03/18 14:07:49
@@ -940,6 +940,8 @@
 		/* NB: we already did dmu_tx_wait() if necessary */
 		goto top;
 	}
+	if (error == 0)
+		VOP_UNLOCK(*xvpp, 0);
 
 	return (error);
 }