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Date: Sat, 24 Mar 2012 12:12:40 +0100
From: Richard Weinberger <richard@nod.at>
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To: Anton Vorontsov <anton.vorontsov@linaro.org>
CC: Andrew Morton <akpm@linux-foundation.org>, Oleg Nesterov <oleg@redhat.com>,
        Russell King <linux@arm.linux.org.uk>,
        Mike Frysinger <vapier@gentoo.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mundt <lethal@linux-sh.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
        John Stultz <john.stultz@linaro.org>,
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        linux-mm@kvack.org
Subject: Re: [PATCH 07/10] um: Should hold tasklist_lock while traversing
 processes
References: <20120324102609.GA28356@lizard> <20120324103030.GG29067@lizard>
In-Reply-To: <20120324103030.GG29067@lizard>
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Am 24.03.2012 11:30, schrieb Anton Vorontsov:
> Traversing the tasks requires holding tasklist_lock, otherwise it
> is unsafe.
>=20
> p.s. However, I'm not sure that calling os_kill_ptraced_process()
> in the atomic context is correct. It seem to work, but please
> take a closer look.

os_kill_ptraced_process() calls a host function.
=46rom UML's point of view nothing sleeps, so this is fine.

Acked-by: Richard Weinberger <richard@nod.at>

Thanks,
//richard


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