Signed-off-by: Christoph Hellwig <h...@lst.de>
---
block/cfq-iosched.c | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index c96186a..f28db97 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);
}
--
2.1.4
--
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