On Wed, Sep 2, 2020 at 10:43 PM Christoph Hellwig <hch@xxxxxx> wrote:
>
> bd_disk is set on all block devices, including those for partitions.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Acked-by: Song Liu <song@xxxxxxxxxx>
> ---
> drivers/md/md.c | 2 +-
> drivers/md/md.h | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/md/md.c b/drivers/md/md.c
> index 3f33562d10d6f5..5a0fd93769a70e 100644
> --- a/drivers/md/md.c
> +++ b/drivers/md/md.c
> @@ -8444,7 +8444,7 @@ static int is_mddev_idle(struct mddev *mddev, int init)
> idle = 1;
> rcu_read_lock();
> rdev_for_each_rcu(rdev, mddev) {
> - struct gendisk *disk = rdev->bdev->bd_contains->bd_disk;
> + struct gendisk *disk = rdev->bdev->bd_disk;
> curr_events = (int)part_stat_read_accum(&disk->part0, sectors) -
> atomic_read(&disk->sync_io);
> /* sync IO will cause sync_io to increase before the disk_stats
> diff --git a/drivers/md/md.h b/drivers/md/md.h
> index f9e2ccdd22c478..2175a5ac4f7c68 100644
> --- a/drivers/md/md.h
> +++ b/drivers/md/md.h
> @@ -551,7 +551,7 @@ extern void mddev_unlock(struct mddev *mddev);
>
> static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors)
> {
> - atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
> + atomic_add(nr_sectors, &bdev->bd_disk->sync_io);
> }
>
> static inline void md_sync_acct_bio(struct bio *bio, unsigned long nr_sectors)
> --
> 2.28.0
>
