diff options
| author | Omar Sandoval <osandov@fb.com> | 2017-04-05 21:01:30 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-04-07 16:56:44 +0200 |
| commit | 6917ff0b5bd4139e08a3f3146529dcb3b95ba7a6 (patch) | |
| tree | c85db4362670bf263448883394bd43e9e89abede /block/elevator.c | |
| parent | blk-mq: use the right hctx when getting a driver tag fails (diff) | |
| download | linux-6917ff0b5bd4139e08a3f3146529dcb3b95ba7a6.tar.xz linux-6917ff0b5bd4139e08a3f3146529dcb3b95ba7a6.zip | |
blk-mq-sched: refactor scheduler initialization
Preparation cleanup for the next couple of fixes, push
blk_mq_sched_setup() and e->ops.mq.init_sched() into a helper.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/elevator.c')
| -rw-r--r-- | block/elevator.c | 32 |
1 files changed, 12 insertions, 20 deletions
diff --git a/block/elevator.c b/block/elevator.c index 01139f549b5b..f236ef1d2be9 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -242,17 +242,12 @@ int elevator_init(struct request_queue *q, char *name) } } - if (e->uses_mq) { - err = blk_mq_sched_setup(q); - if (!err) - err = e->ops.mq.init_sched(q, e); - } else + if (e->uses_mq) + err = blk_mq_init_sched(q, e); + else err = e->ops.sq.elevator_init_fn(q, e); - if (err) { - if (e->uses_mq) - blk_mq_sched_teardown(q); + if (err) elevator_put(e); - } return err; } EXPORT_SYMBOL(elevator_init); @@ -987,21 +982,18 @@ static int elevator_switch(struct request_queue *q, struct elevator_type *new_e) } /* allocate, init and register new elevator */ - if (new_e) { - if (new_e->uses_mq) { - err = blk_mq_sched_setup(q); - if (!err) - err = new_e->ops.mq.init_sched(q, new_e); - } else - err = new_e->ops.sq.elevator_init_fn(q, new_e); - if (err) - goto fail_init; + if (q->mq_ops) + err = blk_mq_init_sched(q, new_e); + else + err = new_e->ops.sq.elevator_init_fn(q, new_e); + if (err) + goto fail_init; + if (new_e) { err = elv_register_queue(q); if (err) goto fail_register; - } else - q->elevator = NULL; + } /* done, kill the old one and finish */ if (old) { |