Re: [PATCH 10/10] mm: per device dirty threshold

On Sat, 21 Apr 2007, Peter Zijlstra wrote:

> > > This is enormously wrong for CONFIG_NR_CPUS=1024 on a 2-way.
> 
> Right, I knew about that but, uhm.
> 
> I wanted to make that num_online_cpus(), and install a hotplug notifier
> to fold the percpu delta back into the total on cpu offline.

Use nr_cpu_ids instead. Contains the maximum possible cpus on this 
hardware and allows to handle the hotplug case easily.

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