From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH 03/53] netns xfrm: add struct xfrm_state::xs_net
Date: Tue, 25 Nov 2008 17:15:36 -0800 (PST)
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From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Tue, 25 Nov 2008 20:26:35 +0300

> To avoid unnecessary complications with passing netns around.
> 
> * set once, very early after allocating
> * once set, never changes
> 
> For a while create every xfrm_state in init_net.
> 
> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Applied.

> @@ -223,6 +226,11 @@ struct xfrm_state
>  	void			*data;
>  };
>  
> +static inline struct net *xs_net(struct xfrm_state *x)
> +{
> +	return read_pnet(&x->xs_net);
> +}
> +
>  /* xflags - make enum if more show up */

Look mom, no ifdefs!  Amazing!