Re: [CIFS][PATCH] Fix support for remount when not changing rsize/wsize

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Looks good to me.

On Thu, Dec 17, 2020 at 5:39 AM Steve French <smfrench@xxxxxxxxx> wrote:
>
> When remounting with the new mount API, we need to set
> rsize and wsize to the previous values if they are not passed
> in on the remount. Otherwise they get set to zero which breaks
> xfstest 452 for example.
>
> Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
> ---
>  fs/cifs/fs_context.c | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c
> index 734b30db580f..0afccbbed2e6 100644
> --- a/fs/cifs/fs_context.c
> +++ b/fs/cifs/fs_context.c
> @@ -707,6 +707,13 @@ static int smb3_reconfigure(struct fs_context *fc)
>   STEAL_STRING(cifs_sb, ctx, nodename);
>   STEAL_STRING(cifs_sb, ctx, iocharset);
>
> + /* if rsize or wsize not passed in on remount, use previous values */
> + if (ctx->rsize == 0)
> + ctx->rsize = cifs_sb->ctx->rsize;
> + if (ctx->wsize == 0)
> + ctx->wsize = cifs_sb->ctx->wsize;
> +
> +
>   smb3_cleanup_fs_context_contents(cifs_sb->ctx);
>   rc = smb3_fs_context_dup(cifs_sb->ctx, ctx);
>   smb3_update_mnt_flags(cifs_sb);
>
> --
> Thanks,
>
> Steve



-- 
-Shyam



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