Re: consolidate the flock uapi definitions

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On Mon, Apr 12, 2021 at 12:22 PM David Laight <David.Laight@xxxxxxxxxx> wrote:
>
> From: Arnd Bergmann
> > Sent: 12 April 2021 11:04
> >
> > On Mon, Apr 12, 2021 at 10:55 AM Christoph Hellwig <hch@xxxxxx> wrote:
> > >
> > > Hi all,
> > >
> > > currently we deal with the slight differents in the various architecture
> > > variants of the flock and flock64 stuctures in a very cruft way.  This
> > > series switches to just use small arch hooks and define the rest in
> > > asm-generic and linux/compat.h instead.
> >
> > Nice cleanup. I can merge it through the asm-generic tree if you like,
> > though it's a little late just ahead of the merge window.
> >
> > I would not want to change the compat_loff_t definition to compat_s64
> > to avoid the padding at this time, though that might be a useful cleanup
> > for a future cycle.
>
> Is x86 the only architecture that has 32bit and 64bit variants where
> the 32bit variant aligns 64bit items on 32bit boundaries?

Yes.

> ISTM that fixing compat_loff_t shouldn't have any fallout.

That is my assumption as well, but I still wouldn't take the
risk one week before the merge window.

       Arnd



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