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authorChristoph Hellwig <hch@lst.de>2016-11-01 07:40:02 -0600
committerJens Axboe <axboe@fb.com>2016-11-01 09:43:26 -0600
commitaa39ebd404423e62f74cfd3e27e9ffe7e38b2a25 (patch)
treec7480711eb50e146e973c513685c0d2528081dca /block/cfq-iosched.c
parent87374179c535a98337569904727aa02f960fe79e (diff)
downloadlinux-aa39ebd404423e62f74cfd3e27e9ffe7e38b2a25.tar.bz2
cfq-iosched: use op_is_sync instead of opencoding it
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/cfq-iosched.c')
-rw-r--r--block/cfq-iosched.c16
1 files changed, 4 insertions, 12 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index c96186adaa66..f28db97c3fe0 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -912,15 +912,6 @@ static inline struct cfq_data *cic_to_cfqd(struct cfq_io_cq *cic)
}
/*
- * 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);
}