if (drq) { mempool_free(drq, dd->drq_pool); rq->elevator_private = NULL; } 
mempool_free(drq, dd->drq_pool); rq->elevator_private = NULL; 
static void deadline_put_request(request_queue_t *q, struct request *rq){	struct deadline_data *dd = q->elevator->elevator_data;	struct deadline_rq *drq = RQ_DATA(rq);	if (drq) {		mempool_free(drq, dd->drq_pool);		rq->elevator_private = NULL;	}}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/b4878f245ec8e168cdd1f170f823a750b7dd4af5/deadline-iosched.c/clean/drivers/block/deadline-iosched.c