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SubjectRe: Is stopmachine() preempt safe?
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On Sun, 2006-08-27 at 19:42 +1000, Keith Owens wrote:
> I cannot convince myself that stopmachine() is preempt safe. What
> prevents this race with CONFIG_PREEMPT=y?

Nothing. Read side is preempt_disable. Write side is stopmachine.

I wrote it that way to avoid having to touch the scheduler. A bigger
stopmachine is possible which schedules all preempted tasks; my plan is
to write such a thing shortly, to see what it looks like.

Cheers,
Rusty.
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