loop_worker
static void loop_process_work(struct loop_worker *worker,
struct loop_worker *worker =
container_of(work, struct loop_worker, work);
struct loop_worker *cur_worker, *worker = NULL;
cur_worker = container_of(*node, struct loop_worker, rb_node);
worker = kzalloc_obj(struct loop_worker, GFP_NOWAIT);
struct loop_worker *pos, *worker;