From mboxrd@z Thu Jan  1 00:00:00 1970
From: anton.vorontsov@linaro.org (Anton Vorontsov)
Date: Sat, 24 Mar 2012 20:43:35 +0400
Subject: [PATCH 07/10] um: Should hold tasklist_lock while traversing
 processes
In-Reply-To: <1332593303.16159.28.camel@twins>
References: <20120324102609.GA28356@lizard> <20120324103030.GG29067@lizard>
 <1332593303.16159.28.camel@twins>
Message-ID: <20120324164335.GA4955@lizard>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Sat, Mar 24, 2012 at 01:48:23PM +0100, Peter Zijlstra wrote:
> On Sat, 2012-03-24 at 14:30 +0400, Anton Vorontsov wrote:
> > Traversing the tasks requires holding tasklist_lock, otherwise it
> > is unsafe. 
> 
> No it doesn't, it either requires tasklist_lock or rcu_read_lock().

Well, currently the code does neither. :-)

-- 
Anton Vorontsov
Email: cbouatmailru at gmail.com