list_for_each_entry_safe_reverse
list_for_each_entry_safe_reverse(dep, p, &dfs, dfs_link) {
list_for_each_entry_safe_reverse(rq, rn,
list_for_each_entry_safe_reverse(p, t, &_manager->pools, pools) {
list_for_each_entry_safe_reverse(dma_p, tmp, &pool->free_list,