Re: [PATCH 21/29] reiserfs: use bdev_nr_sectors instead of open coding it

Jan Kara
2021-10-13T13:35:46Z

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 <jack@suse.com>
SUSE Labs, CR