netdev - Re: [patch 1/1][NETNS] resend: fix net released by rcu callback

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Message-Id: <20071030.153905.34390407.davem@davemloft.net>
Date:	Tue, 30 Oct 2007 15:39:05 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	dlezcano@...ibm.com
Cc:	ebiederm@...ssion.com, containers@...ts.osdl.org,
	netdev@...r.kernel.org
Subject: Re: [patch 1/1][NETNS] resend: fix net released by rcu callback

From: Daniel Lezcano <dlezcano@...ibm.com>
Date: Tue, 30 Oct 2007 17:21:40 +0100

> When a network namespace reference is held by a network subsystem,
> and when this reference is decremented in a rcu update callback, we
> must ensure that there is no more outstanding rcu update before 
> trying to free the network namespace.
> 
> In the normal case, the rcu_barrier is called when the network namespace
> is exiting in the cleanup_net function.
> 
> But when a network namespace creation fails, and the subsystems are
> undone (like the cleanup), the rcu_barrier is missing.
> 
> This patch adds the missing rcu_barrier.
> 
> Signed-off-by: Daniel Lezcano <dlezcano@...ibm.com>

Applied, thanks Daniel.
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