md/md-linear: enable io accounting

use md_account_bio() to enable io accounting, also make sure
mddev_suspend() will wait for all io to be done.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230621165110.1498313-8-yukuai1@huaweicloud.com

diff --git a/drivers/md/md-linear.c b/drivers/md/md-linear.c
index 4eb72b9..71ac996 100644 (file)
--- a/drivers/md/md-linear.c
+++ b/drivers/md/md-linear.c
@@ -238,6 +238,7 @@ static bool linear_make_request(struct mddev *mddev, struct bio *bio)
                bio = split;
        }
 
+       md_account_bio(mddev, &bio);
        bio_set_dev(bio, tmp_dev->rdev->bdev);
        bio->bi_iter.bi_sector = bio->bi_iter.bi_sector -
                start_sector + data_offset;