Subject: Re: [-mm PATCH] sysdev_unregister() should call kobject_del()
From: Badari Pulavarty <pbadari@us.ibm.com>
To: Greg KH <greg@kroah.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
       lkml <linux-kernel@vger.kernel.org>
In-Reply-To: <20080208003825.GB27317@kroah.com>
References: <1202428618.26309.45.camel@dyn9047017100.beaverton.ibm.com>
	 <20080208003825.GB27317@kroah.com>
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Date: Thu, 07 Feb 2008 17:25:46 -0800
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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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