On Thu, Nov 30, 2017 at 12:56 PM, NeilBrown <neilb@xxxxxxxx> wrote:
>
> -/* limit the handle size to NFSv4 handle size now */
> -#define MAX_HANDLE_SZ 128
> +/* Must be larger than NFSv4 file handle, but small
> + * enough for an on-stack allocation. overlayfs doesn't
> + * want this too close to 255.
> + */
> +#define MAX_HANDLE_SZ 200
This really smells for so many reasons.
Also, that really is starting to be a fairly big stack allocation, and
it seems to be used in exactly one place (show_mark_fhandle), which
makes me go "why is that on the stack anyway?".
Could we just allocate a buffer at open time or something?
Linus
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