From 05048cbccab79e9fb9030274170ccd710fe69474 Mon Sep 17 00:00:00 2001 From: Yu Kuai Date: Thu, 22 Jun 2023 00:51:05 +0800 Subject: raid5: fix missing io accounting in raid5_align_endio() Io will only be accounted as done from raid5_align_endio() if the io succeeded, and io inflight counter will be leaked if such io failed. Fix this problem by switching to use md_account_bio() for io accounting. Signed-off-by: Yu Kuai Reviewed-by: Xiao Ni Signed-off-by: Song Liu Link: https://lore.kernel.org/r/20230621165110.1498313-4-yukuai1@huaweicloud.com --- drivers/md/raid5.c | 29 ++++++++--------------------- 1 file changed, 8 insertions(+), 21 deletions(-) (limited to 'drivers/md/raid5.c') diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 1da9dd3e2f18..32a87193bad7 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5468,26 +5468,17 @@ static struct bio *remove_bio_from_retry(struct r5conf *conf, */ static void raid5_align_endio(struct bio *bi) { - struct md_io_clone *md_io_clone = bi->bi_private; - struct bio *raid_bi = md_io_clone->orig_bio; - struct mddev *mddev; - struct r5conf *conf; - struct md_rdev *rdev; + struct bio *raid_bi = bi->bi_private; + struct md_rdev *rdev = (void *)raid_bi->bi_next; + struct mddev *mddev = rdev->mddev; + struct r5conf *conf = mddev->private; blk_status_t error = bi->bi_status; - unsigned long start_time = md_io_clone->start_time; bio_put(bi); - - rdev = (void*)raid_bi->bi_next; raid_bi->bi_next = NULL; - mddev = rdev->mddev; - conf = mddev->private; - rdev_dec_pending(rdev, conf->mddev); if (!error) { - if (blk_queue_io_stat(raid_bi->bi_bdev->bd_disk->queue)) - bio_end_io_acct(raid_bi, start_time); bio_endio(raid_bi); if (atomic_dec_and_test(&conf->active_aligned_reads)) wake_up(&conf->wait_for_quiescent); @@ -5506,7 +5497,6 @@ static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio) struct md_rdev *rdev; sector_t sector, end_sector, first_bad; int bad_sectors, dd_idx; - struct md_io_clone *md_io_clone; bool did_inc; if (!in_chunk_boundary(mddev, raid_bio)) { @@ -5543,16 +5533,13 @@ static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio) return 0; } - align_bio = bio_alloc_clone(rdev->bdev, raid_bio, GFP_NOIO, - &mddev->io_clone_set); - md_io_clone = container_of(align_bio, struct md_io_clone, bio_clone); + md_account_bio(mddev, &raid_bio); raid_bio->bi_next = (void *)rdev; - if (blk_queue_io_stat(raid_bio->bi_bdev->bd_disk->queue)) - md_io_clone->start_time = bio_start_io_acct(raid_bio); - md_io_clone->orig_bio = raid_bio; + align_bio = bio_alloc_clone(rdev->bdev, raid_bio, GFP_NOIO, + &mddev->bio_set); align_bio->bi_end_io = raid5_align_endio; - align_bio->bi_private = md_io_clone; + align_bio->bi_private = raid_bio; align_bio->bi_iter.bi_sector = sector; /* No reshape active, so we can trust rdev->data_offset */ -- cgit v1.2.3