linux-kernel - why network devices don't do reference counting? (Re: [PATCH] Module use count must be updated as bridges are created/destroyed)

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Message-Id: <E1Iae5t-0007Sk-Vu@flower>
Date:	Wed, 26 Sep 2007 23:06:53 +0200
From:	Oleg Verych <olecom@...wer.upol.cz>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	"Jan Beulich" <jbeulich@...ell.com>,
	<bridge@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>
Subject: why network devices don't do reference counting? (Re: [PATCH] Module use count must be updated as bridges are created/destroyed)

* Wed, 26 Sep 2007 08:37:05 -0700
* Organization: Linux Foundation
>
> On Wed, 26 Sep 2007 08:53:27 +0100
> "Jan Beulich" <jbeulich@...ell.com> wrote:
>
>> Otherwise 'modprobe -r' on a module having a dependency on bridge will
>> implicitly unload bridge, bringing down all connectivity that was
>> using bridges.
>> 
>> Signed-off-by: Jan Beulich <jbeulich@...ell.com>
>>
>
> No, network devices don't do reference counting.

Could you explain why, please?

After `udevd` on boot loads lots of unused crap, i surrendered, and use
$(rmmod `lsmod | just first column`). Networing bravely wipes away. OK,
there are lots of configs: udev, hotplug, modprobe, that somebody might
like to fix. But it came to the end with me. I just don't care. So,
please answer :)
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