diff options
| author | Tejun Heo <tj@kernel.org> | 2015-08-18 14:55:00 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-08-18 15:49:16 -0700 |
| commit | 563180a44b7d7978f44e9776eedfbbc550c2398d (patch) | |
| tree | 8bed01d551e26f5e6ea845c18eeb36bfac55cb6a /block/cfq-iosched.c | |
| parent | bce6133b09013f70d41a678d262a12147ed43889 (diff) | |
| download | lwn-563180a44b7d7978f44e9776eedfbbc550c2398d.tar.gz lwn-563180a44b7d7978f44e9776eedfbbc550c2398d.zip | |
cfq-iosched: minor cleanups
* Some were accessing cic->cfqq[] directly. Always use cic_to_cfqq()
and cic_set_cfqq().
* check_ioprio_changed() doesn't need to verify cfq_get_queue()'s
return for NULL. It's always non-NULL. Simplify accordingly.
This patch doesn't cause any functional changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Arianna Avanzini <avanzini.arianna@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/cfq-iosched.c')
| -rw-r--r-- | block/cfq-iosched.c | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 8acfb7a3b2ba..bf6f49cca311 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -3506,14 +3506,14 @@ static void cfq_exit_icq(struct io_cq *icq) struct cfq_io_cq *cic = icq_to_cic(icq); struct cfq_data *cfqd = cic_to_cfqd(cic); - if (cic->cfqq[BLK_RW_ASYNC]) { - cfq_exit_cfqq(cfqd, cic->cfqq[BLK_RW_ASYNC]); - cic->cfqq[BLK_RW_ASYNC] = NULL; + if (cic_to_cfqq(cic, false)) { + cfq_exit_cfqq(cfqd, cic_to_cfqq(cic, false)); + cic_set_cfqq(cic, NULL, false); } - if (cic->cfqq[BLK_RW_SYNC]) { - cfq_exit_cfqq(cfqd, cic->cfqq[BLK_RW_SYNC]); - cic->cfqq[BLK_RW_SYNC] = NULL; + if (cic_to_cfqq(cic, true)) { + cfq_exit_cfqq(cfqd, cic_to_cfqq(cic, true)); + cic_set_cfqq(cic, NULL, true); } } @@ -3572,18 +3572,14 @@ static void check_ioprio_changed(struct cfq_io_cq *cic, struct bio *bio) if (unlikely(!cfqd) || likely(cic->ioprio == ioprio)) return; - cfqq = cic->cfqq[BLK_RW_ASYNC]; + cfqq = cic_to_cfqq(cic, false); if (cfqq) { - struct cfq_queue *new_cfqq; - new_cfqq = cfq_get_queue(cfqd, BLK_RW_ASYNC, cic, bio, - GFP_ATOMIC); - if (new_cfqq) { - cic->cfqq[BLK_RW_ASYNC] = new_cfqq; - cfq_put_queue(cfqq); - } + cfq_put_queue(cfqq); + cfqq = cfq_get_queue(cfqd, BLK_RW_ASYNC, cic, bio, GFP_ATOMIC); + cic_set_cfqq(cic, cfqq, false); } - cfqq = cic->cfqq[BLK_RW_SYNC]; + cfqq = cic_to_cfqq(cic, true); if (cfqq) cfq_mark_cfqq_prio_changed(cfqq); |