Re: [PATCH v1 0/2] exfat: get file size from DataLength

[Namjae Jeon <linkinjeon@kernel.org>]

2023-06-15 12:29 GMT+09:00, Yuezhang.Mo@sony.com <Yuezhang.Mo@sony.com>:
> From the exFAT specification, the file size should get from 'DataLength'
> of Stream Extension Directory Entry, not 'ValidDataLength'.
>
> Without this patch set, 'DataLength' is always same with 'ValidDataLength'
> and get file size from 'ValidDataLength'. But if the file is created by
> other
> exFAT implementation and 'DataLength' is different from 'ValidDataLength',
> this exFAT implementation will not be compatible.
>
> Yuezhang Mo (2):
>   exfat: change to get file size from DataLength
>   exfat: do not zeroed the extended part
Hi Yuezhang,

First, Thank you so much for your work.
Have you ever run xfstests against exfat included this changes ?

Thanks!

>
>  fs/exfat/exfat_fs.h |   2 +
>  fs/exfat/file.c     | 212 +++++++++++++++++++++++++++++++++++++++++++-
>  fs/exfat/inode.c    | 108 +++++++++++++++++++---
>  fs/exfat/namei.c    |   7 +-
>  4 files changed, 310 insertions(+), 19 deletions(-)
>