linux-kernel - Re: refcounting drivers' data structures used in sysfs buffers

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Message-ID: <Pine.LNX.4.44L0.0703121527290.3205-100000@iolanthe.rowland.org>
Date:	Mon, 12 Mar 2007 15:31:32 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Oliver Neukum <oneukum@...e.de>
cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Maneesh Soni <maneesh@...ibm.com>, <gregkh@...e.de>,
	<linux-kernel@...r.kernel.org>
Subject: Re: refcounting drivers' data structures used in sysfs buffers

On Mon, 12 Mar 2007, Oliver Neukum wrote:

> > I'm with Dmitry; the whole thing becomes much, much simpler if we put back
> > your patch and prevent sysfs access after unregistering an attribute 
> > file.  No API changes are needed, no driver changes are needed, no radical 
> > core changes are needed,...  All we would have to do is fix the one SCSI 
> > method to make it use a workqueue.
> 
> Try.

I did.  Didn't you see this message from Saturday:

http://marc.theaimsgroup.com/?l=linux-kernel&m=117355959020831&w=2

I sent it to Linus as well as to all of you.  No replies received so far 
from anybody.

>  I don't like reverting my own code. But I predict he'll tell you that a
> driver's bond with a device should be represented in a data structure
> that is to be refcounted.

:-)

Alan Stern

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