Re: [patch] voluntary-preempt-2.6.8.1-P1

[Ingo Molnar]

* Lee Revell <rlrevell@xxxxxxxxxxx> wrote:

> > i don't know if this was mentioned before, but i sometimes see traces
> > like this where half the entries are "preempt_schedule
> > (copy_page_range)". I just wanted to ask if this is normal and expected
> > behaviour.
> 
> Yes, Ingo identified an issue with copy_page_range, I don't think it's
> fixed yet.  See the voluntary-preempt-2.6.8.1-P0 thread.

right, it's not fixed yet. It's not a trivial critical section - we are
holding two locks and are mapping two atomic kmaps.

	Ingo
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