# Re: \[PATCH 21/29\] reiserfs: use bdev\_nr\_sectors instead of open coding it

- From: Jan Kara \<jack@suse.cz\>
- Date: 2021-10-13 10:43:50 
- List: linux-bcache
- Page: https://ratatoskr.run/linux-bcache/2021/10/215885
- Thread: https://ratatoskr.run/linux-block/2021/10/215820/t.md

```text
On Wed 13-10-21 07:10:34, Christoph Hellwig wrote:
> Use the proper helper to read the block device size and remove two
> cargo culted checks that can't be false.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  fs/reiserfs/super.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
> index 58481f8d63d5b..6c9681e2809f0 100644
> --- a/fs/reiserfs/super.c
> +++ b/fs/reiserfs/super.c
> @@ -1986,8 +1986,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
>  	 * smaller than the filesystem. If the check fails then abort and
>  	 * scream, because bad stuff will happen otherwise.
>  	 */
> -	if (s->s_bdev && s->s_bdev->bd_inode
> -	    && i_size_read(s->s_bdev->bd_inode) <
> +	if ((bdev_nr_sectors(s->s_bdev) << SECTOR_SHIFT) <
>  	    sb_block_count(rs) * sb_blocksize(rs)) {
>  		SWARN(silent, s, "", "Filesystem cannot be "
>  		      "mounted because it is bigger than the device");
> -- 
> 2.30.2
> 
-- 
Jan Kara [ref]
SUSE Labs, CR
```