static void add_root_to_dirty_list(struct btrfs_root *root)
{
	struct btrfs_fs_info *fs_info = root->fs_info;

	if (test_bit(BTRFS_ROOT_DIRTY, &root->state) ||
	    !test_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state))
		return;

	spin_lock(&fs_info->trans_lock);
	if (!test_and_set_bit(BTRFS_ROOT_DIRTY, &root->state)) {
		/* Want the extent tree to be the last on the list */
		if (root->root_key.objectid == BTRFS_EXTENT_TREE_OBJECTID)
			list_move_tail(&root->dirty_list,
				       &fs_info->dirty_cowonly_roots);
		else
			list_move(&root->dirty_list,
				  &fs_info->dirty_cowonly_roots);
	}
	spin_unlock(&fs_info->trans_lock);
}
static void add_root_to_dirty_list(struct btrfs_root *root)
{
	struct btrfs_fs_info *fs_info = root->fs_info;

	if (test_bit(BTRFS_ROOT_DIRTY, &root->state) ||
	    !test_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state))
		return;

	spin_lock(&fs_info->trans_lock);
	if (!test_and_set_bit(BTRFS_ROOT_DIRTY, &root->state)) {
		 
		if (root->root_key.objectid == BTRFS_EXTENT_TREE_OBJECTID)
			list_move_tail(&root->dirty_list,
				       &fs_info->dirty_cowonly_roots);
		else
			list_move(&root->dirty_list,
				  &fs_info->dirty_cowonly_roots);
	}
	spin_unlock(&fs_info->trans_lock);
}