netdev - Re: [PATCH 4/6] vlan: Optimize multiple unregistration

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Message-ID: <4AE9AA01.3020805@gmail.com>
Date:	Thu, 29 Oct 2009 15:43:13 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Patrick McHardy <kaber@...sh.net>
CC:	"David S. Miller" <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH 4/6] vlan: Optimize multiple unregistration

Patrick McHardy a écrit :

> Indeed, but unregister_vlan_dev() destroys the group once the
> count has reached zero, so we must not access it after that.

Well, I hoped call_rcu() callback doesnt fire and kfree(grp) until we exited
from unregister_vlan_dev_alls(), with RTNL locked...
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