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Message-ID: <5c77e7070506200435229cd064@mail.gmail.com>
Date: Mon, 20 Jun 2005 13:35:33 +0200
From: Carsten Otte <cotte.de@gmail.com>
Reply-To: Carsten Otte <cotte.de@gmail.com>
To: Mauricio Lin <mauriciolin@gmail.com>
Subject: Re: How to identify cow (copy-on-write) pages during kernel execution?
Cc: linux-kernel@vger.kernel.org
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On 6/20/05, Mauricio Lin <mauriciolin@gmail.com> wrote:
> So the only way to identify copy-on-write pages is when page fault
> related to copy-on-write happens, right? I mean in the
> handle_pte_fault() that calls do_wp_page().
That shows you at the time of copy, and at a given time later you can
also walk the mm and look that the pte's to see if they are writable.