int fifo = cfq_cfqq_sync(cfqq); 
int fifo = cfq_cfqq_class_sync(cfqq); 
static inline struct cfq_rq *cfq_check_fifo(struct cfq_queue *cfqq){	struct cfq_data *cfqd = cfqq->cfqd;	struct request *rq;	struct cfq_rq *crq;	if (cfqq->fifo_expire)		return NULL;	if (!list_empty(&cfqq->fifo)) {		int fifo = cfq_cfqq_sync(cfqq);		crq = RQ_DATA(list_entry_fifo(cfqq->fifo.next));		rq = crq->request;		if (time_after(jiffies, rq->start_time + cfqd->cfq_fifo_expire[fifo])) {			cfqq->fifo_expire = 1;			return crq;		}	}	return NULL;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/3b18152c327707ae6a2eeba4cfb66457143753bc/cfq-iosched.c/clean/drivers/block/cfq-iosched.c