linux-kernel - Re: [PATCH 2/4] memory-hotplug: add node_device

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Date:	Thu, 27 Sep 2012 21:13:13 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
Cc:	wency@...fujitsu.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, rientjes@...gle.com,
	liuj97@...il.com, len.brown@...el.com, benh@...nel.crashing.org,
	paulus@...ba.org, minchan.kim@...il.com, akpm@...ux-foundation.org
Subject: Re: [PATCH 2/4] memory-hotplug: add node_device_release

On Thu, Sep 27, 2012 at 8:07 PM, Yasuaki Ishimatsu
<isimatu.yasuaki@...fujitsu.com> wrote:
> Hi Kosaki-san,
>
>
> 2012/09/28 5:13, KOSAKI Motohiro wrote:
>>
>> On Thu, Sep 27, 2012 at 1:45 AM,  <wency@...fujitsu.com> wrote:
>>>
>>> From: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
>>>
>>> When calling unregister_node(), the function shows following message at
>>> device_release().
>>
>>
>> This description doesn't have the "following message".
>>
>>
>
>>> Device 'node2' does not have a release() function, it is broken and must
>>> be
>>> fixed.
>
>
> This is the messages. The message is shown by kobject_cleanup(), when
> calling
> unregister_node().

If so, you should quote the message. and don't mix it with your
subject. Moreover
your patch title is too silly. "add node_device_release() function" is
a way. you should
describe the effect of the patch. e.g. suppress "Device 'nodeXX' does
not have a release() function" warning.

Moreover, your explanation is still insufficient. Even if
node_device_release() is empty function, we can get rid of the
warning. Why do we need this node_device_release()
implementation?
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