1205 			     struct ulist *roots, const u64 *extent_item_pos,  argument
1357 		if (roots && ref->count && ref->root_id && ref->parent == 0) {
1365 			ret = ulist_add(roots, ref->root_id, 0, GFP_NOFS);
1496 				     u64 time_seq, struct ulist **roots,  argument
1507 	*roots = ulist_alloc(GFP_NOFS);
1508 	if (!*roots) {
1516 					tmp, *roots, NULL, NULL, ignore_offset);
1519 			ulist_free(*roots);
1520 			*roots = NULL;
1536 			 u64 time_seq, struct ulist **roots,  argument
1544 					time_seq, roots, ignore_offset);
1565 		struct ulist *roots, struct ulist *tmp)  argument
1580 	ulist_init(roots);
1598 					roots, NULL, &shared, false);
1623 	ulist_release(roots);
2001 	struct ulist *roots = NULL;  local
2035 						tree_mod_seq_elem.seq, &roots,
2040 		while (!ret && (root_node = ulist_next(roots, &root_uiter))) {
2052 		ulist_free(roots);