On Fri, Jul 17, 2009 at 05:55:27PM +0200, Peter Zijlstra wrote:
> On Fri, 2009-07-17 at 08:51 -0700, Matt Helsley wrote:
>
> > So it's not clear to me how adding PF_FREEZING fixes anything. Am I
> > missing something?
>
> Yep, PF_FROZEN is only observed going into schedule(), on the way back
> out thaw_process() will already have cleared the flag.
>
> So we don't increment in deactivate_task(), but we do decrement in
> activate_task(), yielding for some very unbalanced accounting.
Ahhh, right!
OK, so the fix looks good then.
Cheers,
-Matt Helsley
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