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 for <linuxppc-dev@lists.ozlabs.org>; Sat, 24 Mar 2012 23:48:45 +1100 (EST)
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Subject: Re: [PATCH 07/10] um: Should hold tasklist_lock while traversing
 processes
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Anton Vorontsov <anton.vorontsov@linaro.org>
Date: Sat, 24 Mar 2012 13:48:23 +0100
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Cc: Mike Frysinger <vapier@gentoo.org>,
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On Sat, 2012-03-24 at 14:30 +0400, Anton Vorontsov wrote:
> Traversing the tasks requires holding tasklist_lock, otherwise it
> is unsafe.=20

No it doesn't, it either requires tasklist_lock or rcu_read_lock().