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>
diff --git a/block/blk-rq-qos.h b/block/blk-rq-qos.h
index a6d13b8..d5e2f68 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 *);