Re: [PATCH 27/30] jfs: use sb_bdev_nr_blocks

[Dave Kleikamp <dave.kleikamp@oracle.com>]

On 10/15/21 8:26AM, Christoph Hellwig wrote:
> Use the sb_bdev_nr_blocks helper instead of open coding it.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Kees Cook <keescook@chromium.org>

Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com>

> ---
>   fs/jfs/resize.c | 3 +--
>   fs/jfs/super.c  | 3 +--
>   2 files changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/fs/jfs/resize.c b/fs/jfs/resize.c
> index a42dbb0d3d28a..8b9a72ae5efa7 100644
> --- a/fs/jfs/resize.c
> +++ b/fs/jfs/resize.c
> @@ -86,8 +86,7 @@ int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
>   		goto out;
>   	}
>   
> -	VolumeSize = i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits;
> -
> +	VolumeSize = sb_bdev_nr_blocks(sb);
>   	if (VolumeSize) {
>   		if (newLVSize > VolumeSize) {
>   			printk(KERN_WARNING "jfs_extendfs: invalid size\n");
> diff --git a/fs/jfs/super.c b/fs/jfs/super.c
> index 9241caa161163..24cbc9946e01c 100644
> --- a/fs/jfs/super.c
> +++ b/fs/jfs/super.c
> @@ -284,8 +284,7 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize,
>   		}
>   		case Opt_resize_nosize:
>   		{
> -			*newLVSize = i_size_read(sb->s_bdev->bd_inode) >>
> -				sb->s_blocksize_bits;
> +			*newLVSize = sb_bdev_nr_blocks(sb);
>   			if (*newLVSize == 0)
>   				pr_err("JFS: Cannot determine volume size\n");
>   			break;
>