Messages in this thread | | | Date | Wed, 24 Jul 2002 18:21:07 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [PATCH] updated low-latency zap_page_range |
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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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