From: Daniel Phillips <phillips@innominate.de>
To: Rik van Riel <riel@conectiva.com.br>
Cc: Linus Torvalds <torvalds@transmeta.com>, linux-kernel@vger.kernel.org
Subject: Re: innd mmap bug in 2.4.0-test12
Date: Thu, 28 Dec 2000 16:15:48 +0100 [thread overview]
Message-ID: <00122816191301.00966@gimli> (raw)
In-Reply-To: <Pine.LNX.4.21.0012281310530.14052-100000@duckman.distro.conectiva>
In-Reply-To: <Pine.LNX.4.21.0012281310530.14052-100000@duckman.distro.conectiva>
On Thu, 28 Dec 2000, Rik van Riel wrote:
> On Thu, 28 Dec 2000, Daniel Phillips wrote:
>
> > It's logical that PageDirty should never be get for ramfs,
>
> No. Not setting PageDirty will cause the system to move the
> page to the inactive_clean list and happily reclaim your data.
>
> We _have to_ use something like PageDirty for this, and
> checking for the ->writepage method will even allow us to
> do stuff like dynamically switching swapping support for
> ramfs on/off (or other funny things).
You're suggesting using the absence of a method as a kind of flag, but
the code is really too full of obscure stuff like that already.
How about taking an extra user on the ramfs pages instead. It doesn't
sound right to set PageDirty when you are not requesting IO.
--
Daniel
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next prev parent reply other threads:[~2000-12-28 15:52 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-12-24 8:28 innd mmap bug in 2.4.0-test12 Marco d'Itri
2000-12-24 13:05 ` Jeff Lightfoot
[not found] ` <Pine.GSO.4.21.0012240330370.13109-100000@weyl.math.psu.edu>
2000-12-24 16:00 ` Marco d'Itri
2000-12-24 17:57 ` Linus Torvalds
2000-12-24 18:10 ` Linus Torvalds
2000-12-24 19:19 ` Dietmar Kling
2000-12-24 23:23 ` Zlatko Calusic
2000-12-25 2:26 ` Dan Aloni
2000-12-27 19:20 ` Rik van Riel
2000-12-27 22:04 ` Zlatko Calusic
[not found] ` <3A4A758F.98EBC605@innominate.de>
2000-12-28 14:29 ` Daniel Phillips
2000-12-28 18:38 ` [PATCH] " Daniel Phillips
2000-12-28 18:54 ` Linus Torvalds
2000-12-28 19:17 ` Daniel Phillips
2000-12-28 20:36 ` Daniel Phillips
2000-12-28 20:42 ` Linus Torvalds
2000-12-28 23:50 ` Daniel Phillips
2000-12-27 23:41 ` Linus Torvalds
2000-12-27 23:55 ` Philipp Rumpf
2000-12-28 0:27 ` Linus Torvalds
2000-12-28 3:00 ` Chris Wedgwood
2000-12-28 5:06 ` Ari Heitner
2000-12-28 6:01 ` Chris Wedgwood
2000-12-28 12:14 ` Alan Cox
2000-12-28 21:36 ` Mo McKinlay
2000-12-28 18:50 ` Linus Torvalds
2000-12-28 18:57 ` Alan Cox
2000-12-29 8:03 ` innd mmap bug in 2.4.0-test12 (UNIMPORTANT) Pau
2000-12-29 1:32 ` innd mmap bug in 2.4.0-test12 Chris Wedgwood
2000-12-29 9:39 ` Christoph Rohland
2000-12-28 15:03 ` Daniel Phillips
2000-12-28 15:12 ` Rik van Riel
2000-12-28 15:15 ` Daniel Phillips [this message]
2000-12-28 17:44 ` Chris Mason
2000-12-28 17:51 ` Rik van Riel
2000-12-28 18:18 ` Chris Mason
2000-12-28 17:49 ` Linus Torvalds
2000-12-28 0:43 ` Dan Aloni
2000-12-28 1:41 ` Dan Aloni
2000-12-28 14:14 ` Rik van Riel
2000-12-28 14:33 ` Rik van Riel
2000-12-28 16:03 ` Daniel Phillips
2000-12-28 17:47 ` Linus Torvalds
2000-12-28 18:02 ` Rik van Riel
2000-12-26 23:02 ` Michael Peddemors
2000-12-27 18:39 ` Alan Cox
2000-12-24 20:07 ` Daniel Phillips
2000-12-24 22:08 ` Linus Torvalds
2000-12-24 23:53 ` Marco d'Itri
2000-12-25 3:10 ` Augusto César Radtke
2000-12-25 9:19 ` Linus Torvalds
2000-12-25 9:42 ` Linus Torvalds
2000-12-26 1:45 ` Alan Cox
2000-12-26 18:17 ` Linus Torvalds
2000-12-26 4:50 ` Chris Wedgwood
2000-12-26 5:26 ` controllerless pci device support Eric Shattow
2000-12-27 0:39 ` Alan Cox
2000-12-26 5:37 ` innd mmap bug in 2.4.0-test12 Linus Torvalds
2000-12-27 10:29 ` Anton Blanchard
2001-01-04 20:44 ` Ralf Gerbig
2000-12-25 18:44 ` Marco d'Itri
2000-12-26 2:20 ` Linus Torvalds
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