931 			     struct ulist *roots, const u64 *extent_item_pos,  argument
1064 		if (roots && ref->count && ref->root_id && ref->parent == 0) {
1071 			ret = ulist_add(roots, ref->root_id, 0, GFP_NOFS);
1201 				  u64 time_seq, struct ulist **roots)  argument
1211 	*roots = ulist_alloc(GFP_NOFS);
1212 	if (!*roots) {
1220 					time_seq, tmp, *roots, NULL, 0, 0);
1223 			ulist_free(*roots);
1239 			 u64 time_seq, struct ulist **roots)  argument
1245 	ret = __btrfs_find_all_roots(trans, fs_info, bytenr, time_seq, roots);
1269 	struct ulist *roots = NULL;  local
1276 	roots = ulist_alloc(GFP_NOFS);
1277 	if (!tmp || !roots) {
1279 		ulist_free(roots);
1290 					roots, NULL, root_objectid, inum);
1310 	ulist_free(roots);
1677 	struct ulist *roots = NULL;  local
1705 					     tree_mod_seq_elem.seq, &roots);
1709 		while (!ret && (root_node = ulist_next(roots, &root_uiter))) {
1719 		ulist_free(roots);