list_add_tail(&drq->request->queuelist, dd->dispatch);
elv_dispatch_add_tail(q, drq->request);
deadline_move_to_dispatch(struct deadline_data *dd, struct deadline_rq *drq){	request_queue_t *q = drq->request->q;	deadline_remove_request(q, drq->request);	list_add_tail(&drq->request->queuelist, dd->dispatch);}