Re: VM: Fix nasty and subtle race in shared mmap'ed page writeback

From: Peter Zijlstra
Date: Mon Jan 29 2007 - 09:13:14 EST


On Mon, 2007-01-29 at 15:08 +0100, Andrea Gelmini wrote:
> On Mon, Jan 22, 2007 at 10:10:39AM +0100, Peter Zijlstra wrote:
> > On Fri, 2007-01-12 at 01:39 +0100, Andrea Gelmini wrote:
> > > Hi,
> > > I can't do the test 'till next week.
> > >
> > > Thanks a lot for your time,
> > > Gelma
> >
> > Have you ever gotten around to testing this?
>
> well, I spent some time doing more deeply test.
> DB corruption happens anyway, even with the kernel that seems to work
> (I say seems because it needs much more effort to get corruption).
> I'm trying to understand it.
> I will work more over it next week.
>
> thank a lot for your time,

Sure, no problem.

Just a question to clarify matters, which kernels are you testing?
That is, you say corruption is now harder to trigger, is that with
the .20-rc kernels (or .19.2). Or are we talking about .18 + my patch?



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