btrfs: uuid-tree: remove unnecessary call to btrfs_mark_buffer_dirty()

The call to btrfs_mark_buffer_dirty() at btrfs_uuid_tree_add() is not
necessary as we have a path setup for writing with btrfs_search_slot()
having a 'cow' argument set to 1 (through btrfs_insert_empty_item()).

This just makes the code more verbose, confusing and add a little extra
overhead and well as increase the module's text size, so remove it.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/uuid-tree.c b/fs/btrfs/uuid-tree.c
index aca2861f21877c3ca92b6fea591f62f53cae7088..17b5e81123a1f416b25f08b8f164d897a32239d7 100644 (file)
--- a/fs/btrfs/uuid-tree.c
+++ b/fs/btrfs/uuid-tree.c
@@ -140,8 +140,6 @@ int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, const u8 *uuid, u8 typ
        ret = 0;
        subid_le = cpu_to_le64(subid_cpu);
        write_extent_buffer(eb, &subid_le, offset, sizeof(subid_le));
-       btrfs_mark_buffer_dirty(trans, eb);
-
 out:
        btrfs_free_path(path);
        return ret;