simple local filesystems: switch to ->iterate_shared()

no changes needed (XFS isn't simple, but it has the same parallelism
in the interesting parts exercised from CXFS).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ufs/dir.c b/fs/ufs/dir.c
index 4c07421..57dcced 100644
--- a/fs/ufs/dir.c
+++ b/fs/ufs/dir.c
@@ -653,7 +653,7 @@
 
 const struct file_operations ufs_dir_operations = {
 	.read		= generic_read_dir,
-	.iterate	= ufs_readdir,
+	.iterate_shared	= ufs_readdir,
 	.fsync		= generic_file_fsync,
 	.llseek		= generic_file_llseek,
 };