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    SubjectRe: [PATCH] mm: fix page_mkclean_one
    From
    From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
    Date: Wed, 27 Dec 2006 22:10:52 -0800

    > Chen, Kenneth wrote on Wednesday, December 27, 2006 9:55 PM
    > > Linus Torvalds wrote on Wednesday, December 27, 2006 7:05 PM
    > > > On Wed, 27 Dec 2006, David Miller wrote:
    > > > > >
    > > > > > I still don't see _why_, though. But maybe smarter people than me can see
    > > > > > it..
    > > > >
    > > > > FWIW this program definitely triggers the bug for me.
    > > >
    > > > Ok, now that I have something simple to do repeatable stuff with, I can
    > > > say what the pattern is.. It's not all that surprising, but it's still
    > > > worth just stating for the record.
    > >
    > >
    > > Running the test code, git bisect points its finger at this commit. Reverting
    > > this commit on top of 2.6.20-rc2 doesn't trigger the bug from the test code.
    > >
    > > edc79b2a46ed854595e40edcf3f8b37f9f14aa3f is first bad commit
    > > commit edc79b2a46ed854595e40edcf3f8b37f9f14aa3f
    > > Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
    > > Date: Mon Sep 25 23:30:58 2006 -0700
    > >
    > > [PATCH] mm: balance dirty pages
    > >
    > > Now that we can detect writers of shared mappings, throttle them. Avoids OOM
    > > by surprise.
    >
    >
    > Oh, never mind :-( I just didn't create enough write out pressure when
    > test this. I just saw bug got triggered on a kernel I previously thought
    > was OK.

    Besides, I'm pretty sure that from the Debian bug entry it's been
    established that the dirty-page tracking changes from a few releases
    ago introduced this problem.
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