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SubjectRe: [PATCH 11/11] compat_ioctl: move tape handling into drivers
On Sun, Sep 9, 2018 at 6:38 AM Al Viro <> wrote:
> On Sat, Sep 08, 2018 at 04:28:17PM +0200, Arnd Bergmann wrote:
> > MTIOCPOS and MTIOCGET are incompatible between 32-bit and 64-bit user
> > space, and traditionally have been translated in fs/compat_ioctl.c.
> >
> > To get rid of that translation handler, move a corresponding
> > implementation into each of the four drivers implementing those commands.
> >
> > The interesting part of that is now in a new linux/mtio.h header that
> > wraps the existing uapi/linux/mtio.h header and provides an abstraction
> > to let drivers handle both cases easily.
> Ugh... Frankly, this bool compat passed all way down looks wrong.
> I can live with that; the question is whether block folks will be
> OK with that thing...

I have tried to come up with an alternative, but couldn't really find anything
that is less ugly. Since nobody else complained, I'll resend this version
along with the other patches.


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