diff options
| author |   Christoph Hellwig <hch@lst.de> | 2021-01-24 11:02:38 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-01-24 18:17:20 -0700 |
| commit | 0b6e522cdc4a76352e5f02fc2d92198f03254425 (patch) | |
| tree | 97b7452632aa87a60c1b9764938e2b9a23a409f9 /block/blk-core.c | |
| parent | block: use ->bi_bdev for bio based I/O accounting (diff) | |
| download | linux-dev-0b6e522cdc4a76352e5f02fc2d92198f03254425.tar.xz linux-dev-0b6e522cdc4a76352e5f02fc2d92198f03254425.zip | |
blk-mq: use ->bi_bdev for I/O accounting
Remove the reverse map from a sector to a partition for I/O accounting by
simply using ->bi_bdev.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 9315311c27a9..6dfbdde6b9ff 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1298,7 +1298,11 @@ void blk_account_io_start(struct request *rq) if (!blk_do_io_stat(rq)) return; - rq->part = disk_map_sector_rcu(rq->rq_disk, blk_rq_pos(rq)); + /* passthrough requests can hold bios that do not have ->bi_bdev set */ + if (rq->bio && rq->bio->bi_bdev) + rq->part = rq->bio->bi_bdev; + else + rq->part = rq->rq_disk->part0; part_stat_lock(); update_io_ticks(rq->part, jiffies, false); |