linux-kernel - Re: [PATCH] sysfs: device-core: sysfs open close notify

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Date:	Thu, 04 Nov 2010 18:37:36 +0200
From:	Onkalo Samu <samu.p.onkalo@...ia.com>
To:	ext Greg KH <gregkh@...e.de>
Cc:	"hmh@....eng.br" <hmh@....eng.br>,
	"alan@...ux.intel.com" <alan@...ux.intel.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sysfs: device-core: sysfs open close notify

On Thu, 2010-11-04 at 17:03 +0100, ext Greg KH wrote:
> On Thu, Nov 04, 2010 at 02:32:15PM +0100, samu.p.onkalo@...ia.com wrote:
> > It is easy to get rid of if the mode parameter is used to pass the information
> > that this entry uses open_close_notify.  What do you think, is it ok to use
> > mode also to that purpose?
> 
> Don't try to overload a parameter that has been used for the past 40+
> years in one way, to try to add additional side-band data that has
> nothing to do with it.
> 
> That way lies madness.
> 

And that is why I didn't even tried to do that in the first place - even
if it would have been the simple way.

Is the implementation ok otherwise?

I'll add sysfs_create_file_notify which sets the control bit save way.
I think it is enough if these entries can be done attribute by
attribute. It is still possible delete them using normal sysfs
operations.

Thanks for the comments,
Samu


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