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SubjectRe: [PATCH] updated low-latency zap_page_range


On 24 Jul 2002, Robert Love wrote:
>
> if (preempt_count() == 1 && need_resched())
>
> Then we get "if (0 && ..)" which should hopefully be evaluated away.

I think preempt_count() is not unconditionally 0 for non-preemptible
kernels, so I don't think this is a compile-time constant.

That may be a bug in preempt_count(), of course.

Linus

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