From: Yu Kuai <yukuai3@xxxxxxxxxx>
Two problems can be fixed this way:
1) 'active_io' will represent inflight io instead of io that is
dispatching.
2) If io accounting is enabled or disabled while io is still inflight,
bio_start_io_acct() and bio_end_io_acct() is not balanced and io
inflight counter will be leaked.
Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
---
drivers/md/raid1.c | 14 ++++++--------
drivers/md/raid1.h | 1 -
2 files changed, 6 insertions(+), 9 deletions(-)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index dd25832eb045..06fa1580501f 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -304,8 +304,6 @@ static void call_bio_endio(struct r1bio *r1_bio)
if (!test_bit(R1BIO_Uptodate, &r1_bio->state))
bio->bi_status = BLK_STS_IOERR;
- if (blk_queue_io_stat(bio->bi_bdev->bd_disk->queue))
- bio_end_io_acct(bio, r1_bio->start_time);
bio_endio(bio);
}
@@ -1303,10 +1301,10 @@ static void raid1_read_request(struct mddev *mddev, struct bio *bio,
}
r1_bio->read_disk = rdisk;
-
- if (!r1bio_existed && blk_queue_io_stat(bio->bi_bdev->bd_disk->queue))
- r1_bio->start_time = bio_start_io_acct(bio);
-
+ if (!r1bio_existed) {
+ md_account_bio(mddev, &bio);
+ r1_bio->master_bio = bio;
+ }
read_bio = bio_alloc_clone(mirror->rdev->bdev, bio, gfp,
&mddev->bio_set);
@@ -1500,8 +1498,8 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
r1_bio->sectors = max_sectors;
}
- if (blk_queue_io_stat(bio->bi_bdev->bd_disk->queue))
- r1_bio->start_time = bio_start_io_acct(bio);
+ md_account_bio(mddev, &bio);
+ r1_bio->master_bio = bio;
atomic_set(&r1_bio->remaining, 1);
atomic_set(&r1_bio->behind_remaining, 0);
diff --git a/drivers/md/raid1.h b/drivers/md/raid1.h
index 468f189da7a0..14d4211a123a 100644
--- a/drivers/md/raid1.h
+++ b/drivers/md/raid1.h
@@ -157,7 +157,6 @@ struct r1bio {
sector_t sector;
int sectors;
unsigned long state;
- unsigned long start_time;
struct mddev *mddev;
/*
* original bio going to /dev/mdx
--
2.39.2
