diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-13 10:11:18 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-13 10:11:18 -0700 |
commit | 67dbb3a099d0fe04df5974edddc0b8c64a9f7529 (patch) | |
tree | a69eb15d6ad783716cdf5f27162ac97e4ef57781 /drivers/md/md.c | |
parent | 900360131066f192c82311a098d03d6ac6429e20 (diff) | |
parent | 47d68979cc968535cb87f3e5f2e6a3533ea48fbd (diff) |
Merge tag 'md/4.0-rc7-fix' of git://neil.brown.name/md
Pull md fixes from Neil Brown:
"Two regression fixes for md, one fairly recent and minor (diskstats
has confusing data) and one older and more serious - RAID0 with
non-power-of-2 chunksize corrupts data.
I guess (almost) no-one uses non-power-of-2 chunks.
Summary:
- Revert recent change which broke IO accounting.
- Fix bug with RAID0 arrays with non-power-of-2 chunk size"
* tag 'md/4.0-rc7-fix' of git://neil.brown.name/md:
md/raid0: fix bug with chunksize not a power of 2.
md: fix md io stats accounting broken
Diffstat (limited to 'drivers/md/md.c')
-rw-r--r-- | drivers/md/md.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 717daad71fb1..e6178787ce3d 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -249,6 +249,7 @@ static void md_make_request(struct request_queue *q, struct bio *bio) const int rw = bio_data_dir(bio); struct mddev *mddev = q->queuedata; unsigned int sectors; + int cpu; if (mddev == NULL || mddev->pers == NULL || !mddev->ready) { @@ -284,7 +285,10 @@ static void md_make_request(struct request_queue *q, struct bio *bio) sectors = bio_sectors(bio); mddev->pers->make_request(mddev, bio); - generic_start_io_acct(rw, sectors, &mddev->gendisk->part0); + cpu = part_stat_lock(); + part_stat_inc(cpu, &mddev->gendisk->part0, ios[rw]); + part_stat_add(cpu, &mddev->gendisk->part0, sectors[rw], sectors); + part_stat_unlock(); if (atomic_dec_and_test(&mddev->active_io) && mddev->suspended) wake_up(&mddev->sb_wait); |