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

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Date:	Mon, 12 Mar 2007 21:15:31 +0100
From:	Oliver Neukum <oneukum@...e.de>
To:	Alan Stern <stern@...land.harvard.edu>
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

Am Montag, 12. März 2007 21:03 schrieb Alan Stern:
> On Mon, 12 Mar 2007, Oliver Neukum wrote:
> 
> > > >  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.
> > > 
> > > :-)
> > 
> > Coming to think about it, he might be right there.
> 
> There still would be a synchronization problem.  Refcounts don't solve
> races; they only solve lifetime problems.  And you would still have to
> change the sysfs API, plus all the other stuff...
> 
> Do you think Linus would listen if all three of us (plus maybe Greg) tried 
> to convince him?

No. He'd tell you that a crap API should be changed.

	Regards
		Oliver
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