Subject: Re: [PATCH 07/10] um: Should hold tasklist_lock while traversing processes

From: Peter Zijlstra <[email-masked]>
Date: Sat, 24 Mar 2012 13:48:23 +0100

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().