Re: Pagecache zeroing: zero_user_segment, zero_user_segments andzero_user

[Nick Piggin]

Christoph Lameter wrote:
> On Wed, 16 May 2007, Nick Piggin wrote:
>
>
> > Well sure, if that's all Christoph is worried about, then it isn't
> > really valid because in generic code we have to follow the architecture
> > abstraction API -- there is no "non highmem platform" in generic code :)
>
>
> But there is a default KM_USER0 that is used in many functions.
>
> F.e.
>
> filemap_copy_from_user *_iovec xip_truncate_page clear_user_highpage 
> clear_highpage copy_user_highpage copy_highpage
>
> So explicitly mentioning KM_USER0 in every function call is not a 
> requirement.

You probably have an argument there... but that's not to do with
highmem platforms or not.

--
SUSE Labs, Novell Inc.
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