Re: [PATCH v7 1/3] fs: fat: Add fat filesystem partition volume label in local structure

[OGAWA Hirofumi]

ChenGuanqiao <chen.chenchacha@xxxxxxxxxxx> writes:

> Signed-off-by: ChenGuanqiao <chen.chenchacha@xxxxxxxxxxx>
> ---
>  fs/fat/fat.h                  |  6 ++++++
>  fs/fat/inode.c                | 15 ++++++++++++---
>  include/uapi/linux/msdos_fs.h |  2 ++
>  3 files changed, 20 insertions(+), 3 deletions(-)
>
> diff --git a/fs/fat/fat.h b/fs/fat/fat.h
> index 8fc1093da47d..96f631282c71 100644
> --- a/fs/fat/fat.h
> +++ b/fs/fat/fat.h
> @@ -86,6 +86,7 @@ struct msdos_sb_info {
> 	int dir_per_block;	      /* dir entries per block */
> 	int dir_per_block_bits;	      /* log2(dir_per_block) */
> 	unsigned int vol_id;		/*volume ID*/
> +	char vol_label[11];		/*volume label*/

In latter patches doesn't use this cache. Why do we cache, or why read
ioctl doesn't use this cache?
-- 
OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>