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Commit aa39ebd4 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
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cfq-iosched: use op_is_sync instead of opencoding it



Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 87374179
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+4 −12
Original line number Diff line number Diff line
@@ -911,15 +911,6 @@ static inline struct cfq_data *cic_to_cfqd(struct cfq_io_cq *cic)
	return cic->icq.q->elevator->elevator_data;
}

/*
 * We regard a request as SYNC, if it's either a read or has the SYNC bit
 * set (in which case it could also be direct WRITE).
 */
static inline bool cfq_bio_sync(struct bio *bio)
{
	return bio_data_dir(bio) == READ || (bio->bi_opf & REQ_SYNC);
}

/*
 * scheduler run of queue, if there are requests pending and no one in the
 * driver that will restart queueing
@@ -2490,7 +2481,7 @@ cfq_find_rq_fmerge(struct cfq_data *cfqd, struct bio *bio)
	if (!cic)
		return NULL;

	cfqq = cic_to_cfqq(cic, cfq_bio_sync(bio));
	cfqq = cic_to_cfqq(cic, op_is_sync(bio->bi_opf));
	if (cfqq)
		return elv_rb_find(&cfqq->sort_list, bio_end_sector(bio));

@@ -2604,13 +2595,14 @@ static int cfq_allow_bio_merge(struct request_queue *q, struct request *rq,
			       struct bio *bio)
{
	struct cfq_data *cfqd = q->elevator->elevator_data;
	bool is_sync = op_is_sync(bio->bi_opf);
	struct cfq_io_cq *cic;
	struct cfq_queue *cfqq;

	/*
	 * Disallow merge of a sync bio into an async request.
	 */
	if (cfq_bio_sync(bio) && !rq_is_sync(rq))
	if (is_sync && !rq_is_sync(rq))
		return false;

	/*
@@ -2621,7 +2613,7 @@ static int cfq_allow_bio_merge(struct request_queue *q, struct request *rq,
	if (!cic)
		return false;

	cfqq = cic_to_cfqq(cic, cfq_bio_sync(bio));
	cfqq = cic_to_cfqq(cic, is_sync);
	return cfqq == RQ_CFQQ(rq);
}