RE: [PATCH] mm: fix page_mkclean_one

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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 <[email protected]>
> 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.
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