Messages in this thread | | | Date | Fri, 13 Sep 2013 13:15:29 +0100 | From | Russell King <> | Subject | Re: [GIT PULL] Btrfs |
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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
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