Re: [PATCH 4/5] uapi: always define F_GETLK64/F_SETLK64/F_SETLKW64 in fcntl.h

From: Christoph Hellwig
Date: Wed Jan 12 2022 - 11:09:47 EST


On Wed, Jan 12, 2022 at 01:08:24PM +0100, Arnd Bergmann wrote:
> > I don't have a strong opinion here. If we were taking symbols away that
> > were previously visible to userland it would be one thing, but since
> > we're just adding symbols that may not have been there before, this
> > seems less likely to break anything.
>
> Changing
>
> #ifndef CONFIG_64BIT
>
> to
>
> #if __BITS_PER_LONG==32 || defined(__KERNEL__),
>
> would take symbols away, since the CONFIG_64BIT macro is never
> set in user space.

Yes.

> > I probably lean toward Christoph's original solution instead of keeping
> > the conditional definitions. It's hard to imagine there are many
> > programs that care whether these other symbols are defined or not.
> >
> > You can add this to the original patch:
> >
> > Acked-by: Jeff Layton <jlayton@xxxxxxxxxx>
>
> Sounds good, thanks

So should we go ahead with the series as-is? Or respin it? Or add
the above change ontop?