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authorChristoph Hellwig <hch@lst.de>2021-01-24 13:02:37 +0300
committerJens Axboe <axboe@kernel.dk>2021-01-25 04:17:20 +0300
commit99dfc43ecbf67f12a06512918aaba61d55863efc (patch)
treeb31f16b3272c8bef4c90c73e7383de74a64aee3c /drivers/md/md.c
parent30c5d3456c272f0de0d7e7eb9fc355fa64a5f649 (diff)
downloadlinux-99dfc43ecbf67f12a06512918aaba61d55863efc.tar.xz
block: use ->bi_bdev for bio based I/O accounting
Rework the I/O accounting for bio based drivers to use ->bi_bdev. This means all drivers can now simply use bio_start_io_acct to start accounting, and it will take partitions into account automatically. To end I/O account either bio_end_io_acct can be used if the driver never remaps I/O to a different device, or bio_end_io_acct_remapped if the driver did remap the I/O. 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 'drivers/md/md.c')
-rw-r--r--drivers/md/md.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index cf06dbb1aa53..7d1bb24add31 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -463,8 +463,8 @@ struct md_io {
struct mddev *mddev;
bio_end_io_t *orig_bi_end_io;
void *orig_bi_private;
+ struct block_device *orig_bi_bdev;
unsigned long start_time;
- struct block_device *part;
};
static void md_end_io(struct bio *bio)
@@ -472,7 +472,7 @@ static void md_end_io(struct bio *bio)
struct md_io *md_io = bio->bi_private;
struct mddev *mddev = md_io->mddev;
- part_end_io_acct(md_io->part, bio, md_io->start_time);
+ bio_end_io_acct_remapped(bio, md_io->start_time, md_io->orig_bi_bdev);
bio->bi_end_io = md_io->orig_bi_end_io;
bio->bi_private = md_io->orig_bi_private;
@@ -514,12 +514,12 @@ static blk_qc_t md_submit_bio(struct bio *bio)
md_io->mddev = mddev;
md_io->orig_bi_end_io = bio->bi_end_io;
md_io->orig_bi_private = bio->bi_private;
+ md_io->orig_bi_bdev = bio->bi_bdev;
bio->bi_end_io = md_end_io;
bio->bi_private = md_io;
- md_io->start_time = part_start_io_acct(mddev->gendisk,
- &md_io->part, bio);
+ md_io->start_time = bio_start_io_acct(bio);
}
/* bio could be mergeable after passing to underlayer */