1201 			     struct ulist *roots, const u64 *extent_item_pos,  argument
1353 		if (roots && ref->count && ref->root_id && ref->parent == 0) {
1361 			ret = ulist_add(roots, ref->root_id, 0, GFP_NOFS);
1492 				     u64 time_seq, struct ulist **roots,  argument
1503 	*roots = ulist_alloc(GFP_NOFS);
1504 	if (!*roots) {
1512 					tmp, *roots, NULL, NULL, ignore_offset);
1515 			ulist_free(*roots);
1516 			*roots = NULL;
1532 			 u64 time_seq, struct ulist **roots,  argument
1540 					time_seq, roots, ignore_offset);
1561 		struct ulist *roots, struct ulist *tmp)  argument
1576 	ulist_init(roots);
1594 					roots, NULL, &shared, false);
1619 	ulist_release(roots);
1997 	struct ulist *roots = NULL;  local
2031 						tree_mod_seq_elem.seq, &roots,
2036 		while (!ret && (root_node = ulist_next(roots, &root_uiter))) {
2048 		ulist_free(roots);