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blk-mq-sched: unify request finished methods 

No need to have two different callouts of bfq vs kyber.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2017-06-16 18:15:21 +02:00 committed by Jens Axboe
parent ea511e3c28
commit 7b9e936163
4 changed files with 11 additions and 17 deletions
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6
block/bfq-iosched.c
View File

@ -4290,7 +4290,7 @@ static void bfq_put_rq_priv_body(struct bfq_queue *bfqq)
bfq_put_queue(bfqq);
}
static void bfq_put_rq_private(struct request_queue *q, struct request *rq)
static void bfq_finish_request(struct request *rq)
{
struct bfq_queue *bfqq = RQ_BFQQ(rq);
struct bfq_data *bfqd = bfqq->bfqd;
@ -4324,7 +4324,7 @@ static void bfq_put_rq_private(struct request_queue *q, struct request *rq)
*/
if (!RB_EMPTY_NODE(&rq->rb_node))
bfq_remove_request(q, rq);
bfq_remove_request(rq->q, rq);
bfq_put_rq_priv_body(bfqq);
}
@ -4951,7 +4951,7 @@ static struct elv_fs_entry bfq_attrs[] = {
static struct elevator_type iosched_bfq_mq = {
.ops.mq = {
.get_rq_priv = bfq_get_rq_private,
.put_rq_priv = bfq_put_rq_private,
.finish_request = bfq_finish_request,
.exit_icq = bfq_exit_icq,
.insert_requests = bfq_insert_requests,
.dispatch_request = bfq_dispatch_request,

11
block/blk-mq.c
View File

@ -437,19 +437,16 @@ void blk_mq_free_request(struct request *rq)
struct request_queue *q = rq->q;
struct elevator_queue *e = q->elevator;
if (rq->rq_flags & RQF_ELVPRIV) {
if (e && e->type->ops.mq.put_rq_priv)
e->type->ops.mq.put_rq_priv(q, rq);
if (rq->rq_flags & (RQF_ELVPRIV | RQF_QUEUED)) {
if (e && e->type->ops.mq.finish_request)
e->type->ops.mq.finish_request(rq);
if (rq->elv.icq) {
put_io_context(rq->elv.icq->ioc);
rq->elv.icq = NULL;
}
}
if ((rq->rq_flags & RQF_QUEUED) && e && e->type->ops.mq.put_request)
e->type->ops.mq.put_request(rq);
else
blk_mq_finish_request(rq);
blk_mq_finish_request(rq);
}
EXPORT_SYMBOL_GPL(blk_mq_free_request);

8
block/kyber-iosched.c
View File

@ -446,13 +446,11 @@ static struct request *kyber_get_request(struct request_queue *q,
return rq;
}
static void kyber_put_request(struct request *rq)
static void kyber_finish_request(struct request *rq)
{
struct request_queue *q = rq->q;
struct kyber_queue_data *kqd = q->elevator->elevator_data;
struct kyber_queue_data *kqd = rq->q->elevator->elevator_data;
rq_clear_domain_token(kqd, rq);
blk_mq_finish_request(rq);
}
static void kyber_completed_request(struct request *rq)
@ -816,7 +814,7 @@ static struct elevator_type kyber_sched = {
.init_hctx = kyber_init_hctx,
.exit_hctx = kyber_exit_hctx,
.get_request = kyber_get_request,
.put_request = kyber_put_request,
.finish_request = kyber_finish_request,
.completed_request = kyber_completed_request,
.dispatch_request = kyber_dispatch_request,
.has_work = kyber_has_work,

3
include/linux/elevator.h
View File

@ -105,7 +105,7 @@ struct elevator_mq_ops {
void (*request_merged)(struct request_queue *, struct request *, enum elv_merge);
void (*requests_merged)(struct request_queue *, struct request *, struct request *);
struct request *(*get_request)(struct request_queue *, unsigned int, struct blk_mq_alloc_data *);
void (*put_request)(struct request *);
void (*finish_request)(struct request *);
void (*insert_requests)(struct blk_mq_hw_ctx *, struct list_head *, bool);
struct request *(*dispatch_request)(struct blk_mq_hw_ctx *);
bool (*has_work)(struct blk_mq_hw_ctx *);
@ -115,7 +115,6 @@ struct elevator_mq_ops {
struct request *(*former_request)(struct request_queue *, struct request *);
struct request *(*next_request)(struct request_queue *, struct request *);
int (*get_rq_priv)(struct request_queue *, struct request *, struct bio *);
void (*put_rq_priv)(struct request_queue *, struct request *);
void (*init_icq)(struct io_cq *);
void (*exit_icq)(struct io_cq *);
};