linux-kernel - Re: [-mm PATCH] sysdev_unregister() should call kobject

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Message-Id: <1202433946.26309.47.camel@dyn9047017100.beaverton.ibm.com>
Date:	Thu, 07 Feb 2008 17:25:46 -0800
From:	Badari Pulavarty <pbadari@...ibm.com>
To:	Greg KH <greg@...ah.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [-mm PATCH] sysdev_unregister() should call kobject_del()

On Thu, 2008-02-07 at 16:38 -0800, Greg KH wrote:
> On Thu, Feb 07, 2008 at 03:56:58PM -0800, Badari Pulavarty wrote:
> > Hi Greg,
> > 
> > While playing with hotplug memory remove on 2.6.24-mm1, I 
> > noticed that /sysfs directory entries are not getting removed.
> > 
> > sysdev_unregister() used to call kobject_unregister().
> > But in 2.6.24-mm1, its only dropping the ref. It should
> > call kobject_del() to remove the object. Correct ?
> > 
> > With this change, the directories are getting removed
> > correctly. Comments ?
> 
> Ick, no, this shouldn't be needed, someone else must be holding a
> reference to the kobject device somewhere.  See the kobject documenation
> for more info.
> 
> I'll try to see where we grab 2 references...

I will take a closer look then. I was taking easy way out :(

Thanks,
Badari

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