From: Andrea Arcangeli <andrea@suse.de>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Robert Macaulay <robert_macaulay@dell.com>,
Rik van Riel <riel@conectiva.com.br>,
Craig Kulesa <ckulesa@as.arizona.edu>,
linux-kernel@vger.kernel.org, Bob Matthews <bmatthews@redhat.com>,
Marcelo Tosatti <marcelo@conectiva.com.br>
Subject: Re: highmem deadlock fix [was Re: VM in 2.4.10(+tweaks) vs. 2.4.9-ac14/15(+stuff)]
Date: Fri, 28 Sep 2001 01:37:30 +0200 [thread overview]
Message-ID: <20010928013730.Y14277@athlon.random> (raw)
In-Reply-To: <Pine.LNX.4.33.0109271605550.25667-100000@penguin.transmeta.com> <Pine.LNX.4.33.0109271618120.25667-100000@penguin.transmeta.com>
In-Reply-To: <Pine.LNX.4.33.0109271618120.25667-100000@penguin.transmeta.com>; from torvalds@transmeta.com on Thu, Sep 27, 2001 at 04:18:58PM -0700
On Thu, Sep 27, 2001 at 04:18:58PM -0700, Linus Torvalds wrote:
>
> On Thu, 27 Sep 2001, Linus Torvalds wrote:
> >
> > Thinking about it, I think GFP_NOIO also implies "we must not wait for
> > other buffers", because that could deadlock for _other_ things too, like
> > loop and NBD (which use NOIO to make sure that they don't recurse - but
> > that should also imply not waiting for themselves). The GFP_xxx approach
> > should fix those deadlocks too.
>
> Ie the patch would be something like the attached..
well this approch is much less finegrined... but yes, it would fix the
deadlock.
Andrea
next prev parent reply other threads:[~2001-09-27 23:37 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-26 13:38 VM in 2.4.10(+tweaks) vs. 2.4.9-ac14/15(+stuff) Craig Kulesa
2001-09-26 14:03 ` Andrea Arcangeli
2001-09-26 14:23 ` Rik van Riel
2001-09-26 14:49 ` Andrea Arcangeli
2001-09-26 18:17 ` Robert Macaulay
2001-09-26 18:36 ` Andrea Arcangeli
2001-09-27 22:13 ` highmem deadlock fix [was Re: VM in 2.4.10(+tweaks) vs. 2.4.9-ac14/15(+stuff)] Andrea Arcangeli
2001-09-27 22:55 ` J . A . Magallon
2001-09-27 23:16 ` Linus Torvalds
2001-09-27 23:18 ` Linus Torvalds
2001-09-27 23:37 ` Andrea Arcangeli [this message]
2001-09-27 23:51 ` Rik van Riel
2001-09-28 1:26 ` Andrea Arcangeli
2001-09-28 1:28 ` Linus Torvalds
2001-09-27 23:47 ` Andrea Arcangeli
2001-09-28 0:03 ` Linus Torvalds
2001-09-28 0:11 ` Andrea Arcangeli
2001-09-28 2:12 ` Robert Macaulay
2001-09-28 2:24 ` Andrea Arcangeli
2001-09-28 13:36 ` Robert Macaulay
2001-09-28 14:02 ` LILO causes segmentation fault and panic [was Re: highmem deadlock fix] Robert Macaulay
2001-09-28 0:08 ` highmem deadlock fix [was Re: VM in 2.4.10(+tweaks) vs. 2.4.9-ac14/15(+stuff)] Andrea Arcangeli
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