On 11/24/20 9:27 PM, Christoph Hellwig wrote:
> Add a little helper to find the kobject for a struct block_device.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Reviewed-by: Jan Kara <jack@xxxxxxx>
> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
For the bcache part, Acked-by: Coly Li <colyli@xxxxxxx>
Thanks.
Coly Li
> ---
> drivers/md/bcache/super.c | 7 ++-----
> drivers/md/md.c | 4 +---
> fs/block_dev.c | 6 +++---
> fs/btrfs/sysfs.c | 15 +++------------
> include/linux/blk_types.h | 3 +++
> 5 files changed, 12 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
> index 46a00134a36ae1..a6a5e21e4fd136 100644
> --- a/drivers/md/bcache/super.c
> +++ b/drivers/md/bcache/super.c
> @@ -1447,8 +1447,7 @@ static int register_bdev(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
> goto err;
>
> err = "error creating kobject";
> - if (kobject_add(&dc->disk.kobj, &part_to_dev(bdev->bd_part)->kobj,
> - "bcache"))
> + if (kobject_add(&dc->disk.kobj, bdev_kobj(bdev), "bcache"))
> goto err;
> if (bch_cache_accounting_add_kobjs(&dc->accounting, &dc->disk.kobj))
> goto err;
> @@ -2342,9 +2341,7 @@ static int register_cache(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
> goto err;
> }
>
> - if (kobject_add(&ca->kobj,
> - &part_to_dev(bdev->bd_part)->kobj,
> - "bcache")) {
> + if (kobject_add(&ca->kobj, bdev_kobj(bdev), "bcache")) {
> err = "error calling kobject_add";
> ret = -ENOMEM;
> goto out;
[snipped]
