linux-kernel - Re: [2.6 patch] drivers/net/loopback.c: convert to module

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Message-ID: <20061213201213.GK4587@ftp.linux.org.uk>
Date:	Wed, 13 Dec 2006 20:12:14 +0000
From:	Al Viro <viro@....linux.org.uk>
To:	David Miller <davem@...emloft.net>
Cc:	bunk@...sta.de, jgarzik@...ox.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [2.6 patch] drivers/net/loopback.c: convert to module_init()

On Tue, Dec 12, 2006 at 05:17:56PM -0800, David Miller wrote:
> From: Adrian Bunk <bunk@...sta.de>
> Date: Tue, 12 Dec 2006 17:24:35 +0100
> 
> > This patch converts drivers/net/loopback.c to using module_init().
> > 
> > Signed-off-by: Adrian Bunk <bunk@...sta.de>
> 
> I'm not %100 sure of this one, let's look at the comment you
> are deleting:
> 
> > -/*
> > - *	The loopback device is global so it can be directly referenced
> > - *	by the network code. Also, it must be first on device list.
> > - */
> > -extern int loopback_init(void);
> > -
> 
> in particular notice the part that says "it must be first on the
> device list".
> 
> I'm not sure whether that is important any longer.  It probably isn't,
> but we should verify it before applying such a patch.

There might be practical considerations along the lines of "we want
lookups for loopback to be fast"...
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