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Date:	Sun, 7 Sep 2008 04:00:09 -0700
From:	Andrew Morton <>
To:	Peter Zijlstra <>
Cc:	Mike Travis <>, Ingo Molnar <>,, David Miller <>,
	Eric Dumazet <>,
	"Eric W. Biederman" <>,
	Jack Steiner <>,
	Jeremy Fitzhardinge <>,
	Jes Sorensen <>, "H. Peter Anvin" <>,
	Thomas Gleixner <>,
Subject: Re: [RFC 07/13] sched: Reduce stack size requirements in

On Sun, 07 Sep 2008 12:24:47 +0200 Peter Zijlstra <> wrote:

> get_online_cpus() can sleep, but you just disabled preemption with those
> get_cpumask_var() horribles!

make cpu_hotplug.refcount an atomic_t.

> Couldn't be arsed to look through the rest, but I really hate this
> cpumask_ptr() stuff that relies on disabling preemption.

that's harder to fix ;)
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