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From: Duncan Sands <baldrick@free.fr>
To: Jamie Lokier <jamie@shareable.org>, Helge Hafting <helgehaf@aitel.hist.no>
Subject: Re: udev sysfs docs Re: State of devfs in 2.6?
Date: Fri, 12 Dec 2003 14:33:14 +0100
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>     2. Keep track of when devices are used, and when they are not busy.
>        We already have this, it's the module reference count.

USB modules (eg: xxxx-hcd) are typically set up so they can be unloaded at any
time: the act of unloading disconnects any devices driven by the module and
frees resources.  I guess this is problematic for your point 2.  I understand
that some network modules work this way too.

All the best,

Duncan.