linux-kernel - Re: [PATCH 1/2] cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask

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Date:	Tue, 2 Dec 2008 10:02:18 +1100 (EST)
From:	James Morris <jmorris@...ei.org>
To:	Rusty Russell <rusty@...tcorp.com.au>
cc:	linux-kernel@...r.kernel.org, Mike Travis <travis@....com>,
	Ingo Molnar <mingo@...e.hu>,
	Eric Biederman <ebiederm@...ssion.com>,
	Ingo Molnar <mingo@...e.hu>,
	Eric Biederman <ebiederm@...ssion.com>
Subject: Re: [PATCH 1/2] cpumask: prepare for iterators to only go to
 nr_cpu_ids/nr_cpumask_bits.: core

On Mon, 1 Dec 2008, Rusty Russell wrote:

> 
> Impact: cleanup
> 
> In future, all cpumask ops will only be valid (in general) for bit
> numbers < nr_cpu_ids.  So use that instead of NR_CPUS in iterators
> and other comparisons.
> 
> This is always safe: no cpu number can be >= nr_cpu_ids, and
> nr_cpu_ids is initialized to NR_CPUS at boot.
> 
> Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
> Signed-off-by: Mike Travis <travis@....com>
> Acked-by: Ingo Molnar <mingo@...e.hu>
> Cc: Eric Biederman <ebiederm@...ssion.com>
> Cc: James Morris <jmorris@...ei.org>

Acked-by: James Morris <jmorris@...ei.org>


-- 
James Morris
<jmorris@...ei.org>
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