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Date: Tue, 13 Mar 2007 19:18:44 +0000
From: Christoph Hellwig <hch@infradead.org>
To: Zoltan Menyhart <Zoltan.Menyhart@free.fr>
Cc: linux-kernel@vger.kernel.org, linux-mm@vger.kernel.org,
       Zoltan Menyhart <Zoltan.Menyhart@bull.net>
Subject: Re: copy_one_pte()
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On Tue, Mar 13, 2007 at 08:15:25PM +0100, Zoltan Menyhart wrote:
> I had a look at copy_one_pte().
> I cannot see any ioproc_update_page() call, not even for the COW pages.
> Is it intentional?

There is no such thing as ioproc_update_page in any mainline tree.
You must be looking at some vendor tree with braindead patches applied.