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Date: Wed, 9 Oct 2002 15:02:25 -0400 (EDT)
From: Alexander Viro <viro@math.psu.edu>
To: Linus Torvalds <torvalds@transmeta.com>
cc: Patrick Mochel <mochel@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: [bk/patch] driver model update: device_unregister()
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On Wed, 9 Oct 2002, Linus Torvalds wrote:

> i
> On Wed, 9 Oct 2002, Alexander Viro wrote:
> > 
> > OK, call me dense, but what things are associated with partition aside of the
> > fact that it exists?
> 
> Filesystems can be associated with one or more partitions. MD devices are 
> associated with one or more partitions. 
> 

> Not disks. Partitions.

<groan>

Can you explain why "filesystem foo uses device bar" gives an object associated
with bar and "process baz has bar opened" doesn't?

"Associated with" is asymmetric in this case - just as for files and processes
holding them opened.  We do have objects for process->file (/proc/<pid>/fd/*)
and we certainly don't have anything like that for other direction.

That's what I'm asking about - do we want to have objects on the _partition_
side of things that would require per-partition directory?  Not on the
filesystem/swap/whatnot side...

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