block: blk-mq: Remove blk_mq_sched_started_request and started_request

blk_mq_sched_completed_request is a function that checks if the elevator
related to the request has started_request implemented, but currently, none of
the available IO schedulers implement started_request, so remove both.

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/blk-mq-sched.h b/block/blk-mq-sched.h
index cf22ab0..126021f 100644 (file)
--- a/block/blk-mq-sched.h
+++ b/block/blk-mq-sched.h
@@ -61,15 +61,6 @@ static inline void blk_mq_sched_completed_request(struct request *rq, u64 now)
                e->type->ops.completed_request(rq, now);
 }
 
-static inline void blk_mq_sched_started_request(struct request *rq)
-{
-       struct request_queue *q = rq->q;
-       struct elevator_queue *e = q->elevator;
-
-       if (e && e->type->ops.started_request)
-               e->type->ops.started_request(rq);
-}
-
 static inline void blk_mq_sched_requeue_request(struct request *rq)
 {
        struct request_queue *q = rq->q;

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 2bc2c07..f78d328 100644 (file)
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -669,8 +669,6 @@ void blk_mq_start_request(struct request *rq)
 {
        struct request_queue *q = rq->q;
 
-       blk_mq_sched_started_request(rq);
-
        trace_block_rq_issue(q, rq);
 
        if (test_bit(QUEUE_FLAG_STATS, &q->queue_flags)) {

diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 17cd007..1dd014c 100644 (file)
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -45,7 +45,6 @@ struct elevator_mq_ops {
        struct request *(*dispatch_request)(struct blk_mq_hw_ctx *);
        bool (*has_work)(struct blk_mq_hw_ctx *);
        void (*completed_request)(struct request *, u64);
-       void (*started_request)(struct request *);
        void (*requeue_request)(struct request *);
        struct request *(*former_request)(struct request_queue *, struct request *);
        struct request *(*next_request)(struct request_queue *, struct request *);