more trivial ->iterate_shared conversions

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index 3ec6113..34a5bc2 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -70,7 +70,7 @@
 
 const struct file_operations bfs_dir_operations = {
 	.read		= generic_read_dir,
-	.iterate	= bfs_readdir,
+	.iterate_shared	= bfs_readdir,
 	.fsync		= generic_file_fsync,
 	.llseek		= generic_file_llseek,
 };