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From: Marek Lindner <lindner_marek@yahoo.de>
Date: Wed, 4 May 2011 16:57:16 +0200
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Subject: Re: [B.A.T.M.A.N.] [PATCH 2/2] batman-adv: Avoid deadlock between
	rtnl_lock and s_active
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On Tuesday 03 May 2011 13:10:06 Linus L=FCssing wrote:
> From: Sven Eckelmann <sven@narfation.org>
>=20
> The hard_if_event is called by the notifier with rtnl_lock and tries to
> remove sysfs entries when a NETDEV_UNREGISTER event is received. This
> will automatically take the s_active lock.
>=20
> The s_active lock is also used when a new interface is added to a meshif
> through sysfs. In that situation we cannot wait for the rntl_lock before
> creating the actual batman-adv interface to prevent a deadlock. It is
> still possible to try to get the rtnl_lock and immediately abort the
> current operation when the trylock call failed.

Applied in b278a6c.

Thanks,
Marek