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blk-mq: simplify blk_mq_free_request

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Merge three functions only tail-called by blk_mq_free_request into
blk_mq_free_request.

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 18:15:22 +02:00 committed by Jens Axboe
parent 7b9e936163
commit 6af54051a0
2 changed files with 15 additions and 38 deletions
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50
block/blk-mq.c
View File

@ -395,12 +395,24 @@ struct request *blk_mq_alloc_request_hctx(struct request_queue *q, int rw,
} }
EXPORT_SYMBOL_GPL(blk_mq_alloc_request_hctx); EXPORT_SYMBOL_GPL(blk_mq_alloc_request_hctx);
void __blk_mq_finish_request(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx, void blk_mq_free_request(struct request *rq)
struct request *rq)
{ {
const int sched_tag = rq->internal_tag;
struct request_queue *q = rq->q; struct request_queue *q = rq->q;
struct elevator_queue *e = q->elevator;
struct blk_mq_ctx *ctx = rq->mq_ctx;
struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, ctx->cpu);
const int sched_tag = rq->internal_tag;
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;
}
}
ctx->rq_completed[rq_is_sync(rq)]++;
if (rq->rq_flags & RQF_MQ_INFLIGHT) if (rq->rq_flags & RQF_MQ_INFLIGHT)
atomic_dec(&hctx->nr_active); atomic_dec(&hctx->nr_active);
@ -416,38 +428,6 @@ void __blk_mq_finish_request(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
blk_mq_sched_restart(hctx); blk_mq_sched_restart(hctx);
blk_queue_exit(q); blk_queue_exit(q);
} }
static void blk_mq_finish_hctx_request(struct blk_mq_hw_ctx *hctx,
struct request *rq)
{
struct blk_mq_ctx *ctx = rq->mq_ctx;
ctx->rq_completed[rq_is_sync(rq)]++;
__blk_mq_finish_request(hctx, ctx, rq);
}
void blk_mq_finish_request(struct request *rq)
{
blk_mq_finish_hctx_request(blk_mq_map_queue(rq->q, rq->mq_ctx->cpu), rq);
}
EXPORT_SYMBOL_GPL(blk_mq_finish_request);
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 | 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;
}
}
blk_mq_finish_request(rq);
}
EXPORT_SYMBOL_GPL(blk_mq_free_request); EXPORT_SYMBOL_GPL(blk_mq_free_request);
inline void __blk_mq_end_request(struct request *rq, blk_status_t error) inline void __blk_mq_end_request(struct request *rq, blk_status_t error)

3
block/blk-mq.h
View File

@ -131,9 +131,6 @@ static inline struct blk_mq_tags *blk_mq_tags_from_data(struct blk_mq_alloc_data
/* /*
* Internal helpers for request allocation/init/free * Internal helpers for request allocation/init/free
*/ */
void __blk_mq_finish_request(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
struct request *rq);
void blk_mq_finish_request(struct request *rq);
struct request *__blk_mq_alloc_request(struct blk_mq_alloc_data *data, struct request *__blk_mq_alloc_request(struct blk_mq_alloc_data *data,
unsigned int op); unsigned int op);