Re: [PATCH 2/3] sched: enforce per-cpu utilization limits onruntime balancing

[Peter Zijlstra]

On Tue, 2010-02-23 at 19:56 +0100, Fabio Checconi wrote:
> +               /*
> +                * Make sure that before restarting balancing everyone
> +                * sees the new free bandwidth.
> +                */
> +               smp_wmb(); 

You cannot order something on its own, barriers come in pairs, where is
his?

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