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block: don't call part_{inc,dec}_in_flight for blk-mq devices

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part_inc_in_flight and part_dec_in_flight are no-ops for blk-mq queues,
so remove the calls in purely blk-mq callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-05-13 12:49:34 +02:00 committed by Jens Axboe
parent b2f609e191
commit 76268f3ac0
2 changed files with 5 additions and 18 deletions
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21
block/blk-core.c
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@ -1412,7 +1412,6 @@ void blk_account_io_done(struct request *req, u64 now)
update_io_ticks(part, jiffies, true);
part_stat_inc(part, ios[sgrp]);
part_stat_add(part, nsecs[sgrp], now - req->start_time_ns);
part_dec_in_flight(req->q, part, rq_data_dir(req));
hd_struct_put(part);
part_stat_unlock();
@ -1421,25 +1420,15 @@ void blk_account_io_done(struct request *req, u64 now)
void blk_account_io_start(struct request *rq, bool new_io)
{
struct hd_struct *part;
int rw = rq_data_dir(rq);
if (!blk_do_io_stat(rq))
return;
part_stat_lock();
if (!new_io) {
part = rq->part;
part_stat_inc(part, merges[rw]);
} else {
part = disk_map_sector_rcu(rq->rq_disk, blk_rq_pos(rq));
part_inc_in_flight(rq->q, part, rw);
rq->part = part;
}
update_io_ticks(part, jiffies, false);
if (!new_io)
part_stat_inc(rq->part, merges[rq_data_dir(rq)]);
else
rq->part = disk_map_sector_rcu(rq->rq_disk, blk_rq_pos(rq));
update_io_ticks(rq->part, jiffies, false);
part_stat_unlock();
}

2
block/blk-merge.c
View file

@ -677,8 +677,6 @@ static void blk_account_io_merge(struct request *req)
part_stat_lock();
part = req->part;
part_dec_in_flight(req->q, part, rq_data_dir(req));
hd_struct_put(part);
part_stat_unlock();
}