linux-kernel - Re: Sysfs and suicidal attributes

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Message-ID: <20070710110447.0f63baf3@gondolin.boeblingen.de.ibm.com>
Date:	Tue, 10 Jul 2007 11:04:47 +0200
From:	Cornelia Huck <cornelia.huck@...ibm.com>
To:	Tejun Heo <htejun@...il.com>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: Sysfs and suicidal attributes

On Tue, 10 Jul 2007 17:49:37 +0900,
Tejun Heo <htejun@...il.com> wrote:

> What I was trying to say was that suicide and murder could be done the
> same way from the driver's POV or am I misunderstanding?

Do you mean a device unregistering itself from its attribute vs. a
device unregistering another device from its attribute?

> 
> > A general immediate disconnect of the buffers (which will be handled in
> > a second pass) would be great, but doesn't sound easy.
> 
> I haven't thought too hard about actual implementation but it's pretty
> specific case.  If doing things in generic manner is difficult, there
> are plenty of shortcuts to choose from, I think.

The "second pass" approach where the store method calls the sysfs core
or sets a flag or whatever sounds doable, but I'm not sure how general
we can get. Maybe for all store methods that just trigger an action.
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