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blk-mq: Drop busy_iter_fn blk_mq_hw_ctx argument

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The only user of blk_mq_hw_ctx blk_mq_hw_ctx argument is
blk_mq_rq_inflight().

Function blk_mq_rq_inflight() uses the hctx to find the associated request
queue to match against the request. However this same check is already
done in caller bt_iter(), so drop this check.

With that change there are no more users of busy_iter_fn blk_mq_hw_ctx
argument, so drop the argument.

Reviewed-by Hannes Reinecke <hare@suse.de>

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Tested-by: Kashyap Desai <kashyap.desai@broadcom.com>
Link: https://lore.kernel.org/r/1638794990-137490-2-git-send-email-john.garry@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
John Garry 2021-12-06 20:49:48 +08:00 committed by Jens Axboe
parent 73f3760edd
commit 8ab30a3319
3 changed files with 10 additions and 12 deletions
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2
block/blk-mq-tag.c
View File

@ -254,7 +254,7 @@ static bool bt_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
return true;
if (rq->q == hctx->queue && rq->mq_hctx == hctx)
ret = iter_data->fn(hctx, rq, iter_data->data, reserved);
ret = iter_data->fn(rq, iter_data->data, reserved);
blk_mq_put_rq_ref(rq);
return ret;
}

17
block/blk-mq.c
View File

@ -127,8 +127,7 @@ struct mq_inflight {
unsigned int inflight[2];
};
static bool blk_mq_check_inflight(struct blk_mq_hw_ctx *hctx,
struct request *rq, void *priv,
static bool blk_mq_check_inflight(struct request *rq, void *priv,
bool reserved)
{
struct mq_inflight *mi = priv;
@ -1308,14 +1307,15 @@ void blk_mq_delay_kick_requeue_list(struct request_queue *q,
}
EXPORT_SYMBOL(blk_mq_delay_kick_requeue_list);
static bool blk_mq_rq_inflight(struct blk_mq_hw_ctx *hctx, struct request *rq,
void *priv, bool reserved)
static bool blk_mq_rq_inflight(struct request *rq, void *priv,
bool reserved)
{
/*
* If we find a request that isn't idle and the queue matches,
* we know the queue is busy. Return false to stop the iteration.
* If we find a request that isn't idle we know the queue is busy
* as it's checked in the iter.
* Return false to stop the iteration.
*/
if (blk_mq_request_started(rq) && rq->q == hctx->queue) {
if (blk_mq_request_started(rq)) {
bool *busy = priv;
*busy = true;
@ -1377,8 +1377,7 @@ void blk_mq_put_rq_ref(struct request *rq)
__blk_mq_free_request(rq);
}
static bool blk_mq_check_expired(struct blk_mq_hw_ctx *hctx,
struct request *rq, void *priv, bool reserved)
static bool blk_mq_check_expired(struct request *rq, void *priv, bool reserved)
{
unsigned long *next = priv;

3
include/linux/blk-mq.h
View File

@ -470,8 +470,7 @@ struct blk_mq_queue_data {
bool last;
};
typedef bool (busy_iter_fn)(struct blk_mq_hw_ctx *, struct request *, void *,
bool);
typedef bool (busy_iter_fn)(struct request *, void *, bool);
typedef bool (busy_tag_iter_fn)(struct request *, void *, bool);
/**