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Date: Sun, 18 Mar 2007 22:25:59 +0200
From: "Michael S. Tsirkin" <mst@dev.mellanox.co.il>
To: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: "Michael S. Tsirkin" <mst@dev.mellanox.co.il>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       netdev@vger.kernel.org, general@lists.openfabrics.org,
       Roland Dreier <rolandd@cisco.com>
Subject: Re: dst_ifdown breaks infiniband?
Message-ID: <20070318202559.GD11078@mellanox.co.il>
Reply-To: "Michael S. Tsirkin" <mst@dev.mellanox.co.il>
References: <20070318155532.GG7958@mellanox.co.il>
	<20070318191238.GA20518@ms2.inr.ac.ru>
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> > Why is neighbour->dev changed here?
> 
> It holds reference to device and prevents its destruction.
> If dst is held somewhere, we cannot destroy the device and deadlock
> while unregister.

BTW, can this ever happen for the loopback device itself?
Is it ever unregistered?

-- 
MST