diff options
| author | Josef Bacik <jbacik@fb.com> | 2018-07-03 17:15:00 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-07-09 17:07:54 +0200 |
| commit | 67b42d0bf7a8fd1ec0cf1acdc9550e688d7c8578 (patch) | |
| tree | f6aab5ca56ab6ba71846d93ff81afd0d34d3a3c1 /block | |
| parent | block: remove external dependency on wbt_flags (diff) | |
| download | linux-67b42d0bf7a8fd1ec0cf1acdc9550e688d7c8578.tar.xz linux-67b42d0bf7a8fd1ec0cf1acdc9550e688d7c8578.zip | |
rq-qos: introduce dio_bio callback
wbt cares only about request completion time, but controllers may need
information that is on the bio itself, so add a done_bio callback for
rq-qos so things like blk-iolatency can use it to have the bio when it
completes.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/bio.c | 4 | ||||
| -rw-r--r-- | block/blk-rq-qos.c | 10 | ||||
| -rw-r--r-- | block/blk-rq-qos.h | 2 |
3 files changed, 16 insertions, 0 deletions
diff --git a/block/bio.c b/block/bio.c index 5f84f5c3887b..f3536bfc8298 100644 --- a/block/bio.c +++ b/block/bio.c @@ -32,6 +32,7 @@ #include <trace/events/block.h> #include "blk.h" +#include "blk-rq-qos.h" /* * Test patch to inline a certain number of bi_io_vec's inside the bio @@ -1808,6 +1809,9 @@ again: if (!bio_integrity_endio(bio)) return; + if (bio->bi_disk) + rq_qos_done_bio(bio->bi_disk->queue, bio); + /* * Need to have a real endio function for chained bios, otherwise * various corner cases will break (like stacking block devices that diff --git a/block/blk-rq-qos.c b/block/blk-rq-qos.c index b7b02e04f64f..5134b24482f6 100644 --- a/block/blk-rq-qos.c +++ b/block/blk-rq-qos.c @@ -88,6 +88,16 @@ void rq_qos_track(struct request_queue *q, struct request *rq, struct bio *bio) } } +void rq_qos_done_bio(struct request_queue *q, struct bio *bio) +{ + struct rq_qos *rqos; + + for(rqos = q->rq_qos; rqos; rqos = rqos->next) { + if (rqos->ops->done_bio) + rqos->ops->done_bio(rqos, bio); + } +} + /* * Return true, if we can't increase the depth further by scaling */ diff --git a/block/blk-rq-qos.h b/block/blk-rq-qos.h index a6d13b8ce0dc..d5e2f68fe41e 100644 --- a/block/blk-rq-qos.h +++ b/block/blk-rq-qos.h @@ -30,6 +30,7 @@ struct rq_qos_ops { void (*issue)(struct rq_qos *, struct request *); void (*requeue)(struct rq_qos *, struct request *); void (*done)(struct rq_qos *, struct request *); + void (*done_bio)(struct rq_qos *, struct bio *); void (*cleanup)(struct rq_qos *, struct bio *); void (*exit)(struct rq_qos *); }; @@ -101,6 +102,7 @@ void rq_qos_cleanup(struct request_queue *, struct bio *); void rq_qos_done(struct request_queue *, struct request *); void rq_qos_issue(struct request_queue *, struct request *); void rq_qos_requeue(struct request_queue *, struct request *); +void rq_qos_done_bio(struct request_queue *q, struct bio *bio); void rq_qos_throttle(struct request_queue *, struct bio *, spinlock_t *); void rq_qos_track(struct request_queue *q, struct request *, struct bio *); void rq_qos_exit(struct request_queue *); |