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Date: Sun, 5 Feb 2006 09:00:28 +0200
From: Gleb Natapov <gleb@minantech.com>
To: Hugh Dickins <hugh@veritas.com>
Cc: yipee <yipeeyipeeyipeeyipee@yahoo.com>, linux-kernel@vger.kernel.org
Subject: Re: changing physical page
Message-ID: <20060205070027.GA11558@minantech.com>
References: <loom.20060202T160457-366@post.gmane.org> <Pine.LNX.4.61.0602021711110.8796@goblin.wat.veritas.com> <loom.20060204T152816-726@post.gmane.org> <Pine.LNX.4.61.0602041518230.8867@goblin.wat.veritas.com>
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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.

--
			Gleb.
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