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Date:   Wed, 13 Oct 2021 12:43:43 +0200
From:   Jan Kara <jack@suse.cz>
To:     Christoph Hellwig <hch@lst.de>
Cc:     Jens Axboe <axboe@kernel.dk>, Coly Li <colyli@suse.de>,
        Mike Snitzer <snitzer@redhat.com>, Song Liu <song@kernel.org>,
        David Sterba <dsterba@suse.com>,
        Josef Bacik <josef@toxicpanda.com>,
        Theodore Ts'o <tytso@mit.edu>,
        OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>,
        Dave Kleikamp <shaggy@kernel.org>,
        Ryusuke Konishi <konishi.ryusuke@gmail.com>,
        Anton Altaparmakov <anton@tuxera.com>,
        Konstantin Komarov <almaz.alexandrovich@paragon-software.com>,
        Kees Cook <keescook@chromium.org>,
        Phillip Lougher <phillip@squashfs.org.uk>,
        Jan Kara <jack@suse.com>, linux-block@vger.kernel.org,
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        reiserfs-devel@vger.kernel.org
Subject: Re: [PATCH 21/29] reiserfs: use bdev_nr_sectors instead of open
 coding it
Message-ID: <20211013104343.GF19200@quack2.suse.cz>
References: <20211013051042.1065752-1-hch@lst.de>
 <20211013051042.1065752-22-hch@lst.de>
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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