From: ebiederm@xmission.com (Eric W. Biederman)
To: Rik van Riel <riel@conectiva.com.br>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
"Dirk W. Steinberg" <dws@dirksteinberg.de>,
Ingo Oeser <ingo.oeser@informatik.tu-chemnitz.de>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: Swapping for diskless nodes
Date: 10 Aug 2001 02:11:46 -0600 [thread overview]
Message-ID: <m1k80ctjul.fsf@frodo.biederman.org> (raw)
In-Reply-To: <Pine.LNX.4.33L.0108091758070.1439-100000@duckman.distro.conectiva>
Rik van Riel <riel@conectiva.com.br> writes:
> On 9 Aug 2001, Eric W. Biederman wrote:
>
> > I don't know about that. We already can swap over just about
> > everything because we can swap over the loopback device.
>
> Last I looked the loopback device could deadlock your
> system without you needing to swap over it ;)
It wouldn't suprise me. But the fact remains that in 2.4 we allow it.
And if we allw it there is little excuse for doing it wrong.
Actually except for network cases it looks easier to prevent deadlocks
on the swapping path than with the loop back devices. We can call
aops->prepare_write_out when we place the page in the swap cache
to make certain we aren't over a hole in a file, and there is room in the
filesystem to store the data.
Eric
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next prev parent reply other threads:[~2001-08-10 8:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <no.id>
[not found] ` <E15Ulnx-0006zZ-00@the-village.bc.nu>
2001-08-09 10:50 ` Ingo Oeser
2001-08-09 13:12 ` Dirk W. Steinberg
2001-08-09 20:47 ` Rik van Riel
2001-08-09 15:19 ` Alan Cox
2001-08-09 17:09 ` Eric W. Biederman
2001-08-09 20:58 ` Rik van Riel
2001-08-10 8:11 ` Eric W. Biederman [this message]
2001-08-09 14:26 Bulent Abali
2001-08-09 15:13 ` Alan Cox
2001-08-09 20:57 ` Rik van Riel
2001-08-09 22:46 ` Alan Cox
2001-08-11 1:16 ` Pavel Machek
2001-08-11 1:13 ` Pavel Machek
2001-08-14 12:57 ` Alan Cox
2001-08-16 21:46 ` Pavel Machek
2001-08-17 0:46 ` Rik van Riel
2001-08-17 1:35 ` Jakob Østergaard
2001-08-17 21:23 ` Pavel Machek
2001-08-17 6:42 ` Andreas Haumer
2001-08-17 21:25 ` Pavel Machek
2001-08-17 21:03 ` Andreas Haumer
2001-08-17 22:31 ` Dirk W. Steinberg
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