From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH 1/2] netns: add
 register_pernet_gen_subsys/unregister_pernet_gen_subsys
Date: Sun, 26 Oct 2008 21:56:25 -0700 (PDT)
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From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Sun, 26 Oct 2008 02:43:24 +0400

> netns ops which are registered with register_pernet_gen_device() are
> shutdown strictly before those which are registered with
> register_pernet_subsys(). Sometimes this leads to opposite (read: buggy)
> shutdown ordering between two modules.
> 
> Add register_pernet_gen_subsys()/unregister_pernet_gen_subsys() for modules
> which aren't elite enough for entry in struct net, and which can't use
> register_pernet_gen_device(). PPTP conntracking module is such one.
> 
> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

I'll let Patrick take this one with your PPTP netns changes.