From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Daniel Phillips <phillips@bonn-fries.net>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Rob Fuller <rfuller@nsisoftware.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: broken VM in 2.4.10-pre9
Date: Thu, 20 Sep 2001 13:57:02 +0100 (BST) [thread overview]
Message-ID: <E15k3O2-0005Fr-00@the-village.bc.nu> (raw)
In-Reply-To: <20010920112110Z16256-2757+869@humbolt.nl.linux.org> from "Daniel Phillips" at Sep 20, 2001 01:28:31 PM
> On September 20, 2001 12:04 am, Alan Cox wrote:
> > Reverse mappings make linear aging easier to do but are not critical (we
> > can walk all physical pages via the page map array).
>
> But you can't pick up the referenced bit that way, so no up aging, only
> down.
#1 If you really wanted to you could update a referenced bit in the page
struct in the fault handling path.
#2 If a page is referenced multiple times by different processes is the
behaviour of multiple upward aging actually wrong.
Alan
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next prev parent reply other threads:[~2001-09-20 12:57 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-17 15:40 Rob Fuller
2001-09-17 16:03 ` Eric W. Biederman
2001-09-19 9:45 ` Daniel Phillips
2001-09-19 19:45 ` Alan Cox
2001-09-19 21:03 ` Eric W. Biederman
2001-09-19 22:04 ` Alan Cox
2001-09-19 22:26 ` Eric W. Biederman
2001-09-19 23:05 ` Rik van Riel
2001-09-20 11:28 ` Daniel Phillips
2001-09-20 12:06 ` Rik van Riel
2001-09-21 8:13 ` Daniel Phillips
2001-09-21 12:10 ` Rik van Riel
2001-09-21 15:27 ` Jan Harkes
2001-09-22 7:09 ` Daniel Phillips
2001-09-25 11:04 ` Mike Fedyk
2001-09-20 12:57 ` Alan Cox [this message]
2001-09-20 13:40 ` Daniel Phillips
2001-09-24 22:50 ` Pavel Machek
2001-09-26 18:22 ` Marcelo Tosatti
2001-09-26 23:44 ` Pavel Machek
2001-09-27 13:52 ` Eric W. Biederman
2001-10-01 11:37 ` Marcelo Tosatti
2001-09-19 23:00 ` Rik van Riel
2001-09-21 8:23 ` Eric W. Biederman
2001-09-21 12:01 ` Rik van Riel
2001-09-22 2:14 ` Alexander Viro
2001-09-22 3:09 ` Rik van Riel
2001-09-19 21:37 ` Eric W. Biederman
2001-09-19 21:55 ` David S. Miller
2001-09-20 13:02 ` Rik van Riel
-- strict thread matches above, loose matches on Subject: below --
2001-09-19 22:15 Rob Fuller
2001-09-19 22:21 ` David S. Miller
2001-09-19 22:30 ` Alan Cox
2001-09-19 22:48 ` Eric W. Biederman
2001-09-19 22:51 ` Bryan O'Sullivan
[not found] <Pine.LNX.4.33L.0109161330000.9536-100000@imladris.rielhome.conectiva>
2001-09-17 8:06 ` Eric W. Biederman
2001-09-17 12:12 ` Rik van Riel
2001-09-17 15:45 ` Eric W. Biederman
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