void ext4_ext_drop_refs(struct ext4_ext_path *path)
{
	int depth, i;

	if (!path)
		return;
	depth = path->p_depth;
	for (i = 0; i <= depth; i++, path++) {
		brelse(path->p_bh);
		path->p_bh = NULL;
	}
}
void ext4_ext_drop_refs(struct ext4_ext_path *path)
{
	int depth, i;

	if (!path)
		return;
	depth = path->p_depth;
	for (i = 0; i <= depth; i++, path++) {
		brelse(path->p_bh);
		path->p_bh = NULL;
	}
}