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Date: Sun, 5 Feb 2006 11:55:20 +0000 (GMT)
From: Hugh Dickins <hugh@veritas.com>
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To: Gleb Natapov <gleb@minantech.com>
cc: yipee <yipeeyipeeyipeeyipee@yahoo.com>, linux-kernel@vger.kernel.org
Subject: Re: changing physical page
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On Sun, 5 Feb 2006, Gleb Natapov wrote:
> On Sat, Feb 04, 2006 at 03:20:00PM +0000, Hugh Dickins wrote:
> > On Sat, 4 Feb 2006, yipee wrote:
> > > Hugh Dickins <hugh <at> veritas.com> writes:
> > > > I'll assume that when you say "page owned by a user program", you're
> > > > meaning a private page, not a shared file page mapped into the program.
> > > > 
> > > > If you're asking about what currently happens, the answer is "No".
> > > > 
> > > > If you're asking about what you can assume, the answer is "Yes".
> > > 
> > > So you are saying that the current kernel doesn't move these kind of pages?
> > 
> > If you don't have swap (one of the conditions you gave), yes.
> > 
> And what if application forks and writes to the private page? Kernel
> actually memcpy the page to another location.

Good point.
Hugh
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