Messages in this thread | | | Date | Wed, 24 Jul 2002 18:19:27 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] updated low-latency zap_page_range |
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Robert Love wrote: > > ... > I hope it compiles to nothing! There is a false in an if... oh, wait, > to preserve possible side-effects gcc will keep the need_resched() call > so I guess we should reorder it as: > > if (preempt_count() == 1 && need_resched()) > > Then we get "if (0 && ..)" which should hopefully be evaluated away. > Then the inline is empty and nothing need be done.
I think someone changed the definition of preempt_count() while you weren't looking.
Plus it's used as an lvalue :(
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