Re: [GIT PULL] Btrfs

Russell King
2013-09-13T12:16:08Z

On Fri, Sep 13, 2013 at 07:53:21AM -0400, Josh Boyer wrote:
> I'm not an ARM expert, so I don't know if ARM should use the
> asm-generic implementations, or just use __get_user/__put_user in all
> cases. I've CC'd rmk.

Why do we have uaccess-unaligned.h ? Normally, these kinds of things
are spawned by architectures which have problems with unaligned accesses,
ARM being one of them, but afaik we've never need this.

With the kernel-side trapping of unaligned accesses on older hardware,
we've always dealt with the normal accessor faulting.

>From what I can tell in the git history, these unaligned put_user and
get_user have existed all the way back to the dawn of git use.

Can someone enlighten me why we have them?

--
Russell King