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blk-mq: Make blk_mq_run_hw_queue() return void 

Since commit 97889f9ac2 ("blk-mq: remove synchronize_rcu() from
blk_mq_del_queue_tag_set()"), the return value of blk_mq_run_hw_queue()
is never checked, so make it return void, which very marginally simplifies
the code.

Reviewed-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
John Garry 2019-10-30 00:59:30 +08:00 committed by Jens Axboe
parent 9a7f12edf8
commit 626fb735a4
2 changed files with 3 additions and 7 deletions
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8
block/blk-mq.c
View File

@ -1457,7 +1457,7 @@ void blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs)
} }
EXPORT_SYMBOL(blk_mq_delay_run_hw_queue); EXPORT_SYMBOL(blk_mq_delay_run_hw_queue);
bool blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async) void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async)
{ {
int srcu_idx; int srcu_idx;
bool need_run; bool need_run;
@ -1475,12 +1475,8 @@ bool blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async)
blk_mq_hctx_has_pending(hctx); blk_mq_hctx_has_pending(hctx);
hctx_unlock(hctx, srcu_idx); hctx_unlock(hctx, srcu_idx);
if (need_run) { if (need_run)
__blk_mq_delay_run_hw_queue(hctx, async, 0); __blk_mq_delay_run_hw_queue(hctx, async, 0);
return true;
}
return false;
} }
EXPORT_SYMBOL(blk_mq_run_hw_queue); EXPORT_SYMBOL(blk_mq_run_hw_queue);

2
include/linux/blk-mq.h
View File

@ -502,7 +502,7 @@ void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async);
void blk_mq_quiesce_queue(struct request_queue *q); void blk_mq_quiesce_queue(struct request_queue *q);
void blk_mq_unquiesce_queue(struct request_queue *q); void blk_mq_unquiesce_queue(struct request_queue *q);
void blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs); void blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs);
bool blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async); void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async);
void blk_mq_run_hw_queues(struct request_queue *q, bool async); void blk_mq_run_hw_queues(struct request_queue *q, bool async);
void blk_mq_tagset_busy_iter(struct blk_mq_tag_set *tagset, void blk_mq_tagset_busy_iter(struct blk_mq_tag_set *tagset,
busy_tag_iter_fn *fn, void *priv); busy_tag_iter_fn *fn, void *priv);