Re: [ANNOUNCE] udev 021 release

[rihad <rihad@mail.ru>]

Greg KH wrote:
> On Fri, Mar 05, 2004 at 11:29:07PM +0400, rihad wrote:
> 
>>Date: 	Wed, 3 Mar 2004 07:14:33 -0800
>>From: Greg KH <greg@kroah.com>
>>
>>>Users need to learn that the kernel is changing models from one which
>>>automatically loaded modules when userspace tried to access the device,
>>>to one where the proper modules are loaded when the hardware is found.
>>
>>Does this mean that I will have modules for all my hardware hanging 
>>around even if I'm not, say, using cdrom at the moment?
> 
> 
> Yup, why not?
> 

I suspect there's nothing wrong with that under many common scenarios 
(apart from the one thing I seem to dislike so much that if a cdrom 
isn't being used, no driver for it should be loaded). But it does impose 
certain amount of strict policy that Unix (and Linux more so) has long 
been doing a great job of avoiding.

> 
>>And does it mean that if I rmmod -a the unused cdrom module and later
>>try to mount /cdrom, the correct module won't be magically insmod'ed?
> 
> 
> If you don't have the /dev entry there, how would anything know to load
> the module?
> 

Does the devfs/udev /dev entry get removed when doing rmmod? I though 
not. But since the module isn't there anymore, doing mount /dev/cdrom 
/cdrom would give "No such device". Not a problem per se, but then 
probably rmmod -a isn't as a wise thing to do with udev as it is with 
devfs. Bad.


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