more trivial ->iterate_shared conversions

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index 3a32ddf..7919967 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -561,7 +561,7 @@
 static const struct file_operations cramfs_directory_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= generic_read_dir,
-	.iterate	= cramfs_readdir,
+	.iterate_shared	= cramfs_readdir,
 };
 
 static const struct inode_operations cramfs_dir_inode_operations = {