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block/mq-deadline: Introduce dd_start_request() 

Prepare for adding a second caller of this function. No functionality
has been changed.

Cc: Damien Le Moal <dlemoal@kernel.org>
Cc: Yu Kuai <yukuai@kernel.org>
Cc: chengkaitao <chengkaitao@kylinos.cn>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche 2025-10-13 12:28:02 -07:00 committed by Jens Axboe
parent 211ddde082
commit 93a358af59
1 changed files with 14 additions and 8 deletions
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22
block/mq-deadline.c
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@ -306,6 +306,19 @@ static bool started_after(struct deadline_data *dd, struct request *rq,
return time_after(start_time, latest_start);
}
static struct request *dd_start_request(struct deadline_data *dd,
enum dd_data_dir data_dir,
struct request *rq)
{
u8 ioprio_class = dd_rq_ioclass(rq);
enum dd_prio prio = ioprio_class_to_prio[ioprio_class];
dd->per_prio[prio].latest_pos[data_dir] = blk_rq_pos(rq);
dd->per_prio[prio].stats.dispatched++;
rq->rq_flags |= RQF_STARTED;
return rq;
}
/*
* deadline_dispatch_requests selects the best request according to
* read/write expire, fifo_batch, etc and with a start time <= @latest_start.
@ -316,8 +329,6 @@ static struct request *__dd_dispatch_request(struct deadline_data *dd,
{
struct request *rq, *next_rq;
enum dd_data_dir data_dir;
enum dd_prio prio;
u8 ioprio_class;
lockdep_assert_held(&dd->lock);
@ -411,12 +422,7 @@ static struct request *__dd_dispatch_request(struct deadline_data *dd,
dd->batching++;
deadline_move_request(dd, per_prio, rq);
done:
ioprio_class = dd_rq_ioclass(rq);
prio = ioprio_class_to_prio[ioprio_class];
dd->per_prio[prio].latest_pos[data_dir] = blk_rq_pos(rq);
dd->per_prio[prio].stats.dispatched++;
rq->rq_flags |= RQF_STARTED;
return rq;
return dd_start_request(dd, data_dir, rq);
}
/*