linux-kernel - Re: [PATCH 02/48] staging/lustre/obdclass: restore lu

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Message-ID: <CA+a=Yy5ZUk81n4wXtcrHFeSandzQuUXTwr6fzTwxLgZPw5vXQA@mail.gmail.com>
Date:	Wed, 24 Jul 2013 14:06:25 +0800
From:	Peng Tao <bergwolf@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	"Dilger, Andreas" <andreas.dilger@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 02/48] staging/lustre/obdclass: restore lu_ref

On Wed, Jul 24, 2013 at 4:52 AM, Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
> On Tue, Jul 23, 2013 at 08:31:15PM +0000, Dilger, Andreas wrote:
>> On 2013/07/23 1:37 PM, "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
>> wrote:
>>
>> >On Tue, Jul 23, 2013 at 12:06:23AM +0800, Peng Tao wrote:
>> >> lu_ref.[ch] were mistakenly removed by coan2. Add them back and guard
>> >> with CONFIG_LUSTRE_DEBUG_LU_REF_CHECK.
>> >
>> >Ick, why?  Why not use the in-kernel infrastructure for this type of
>> >thig, _iff_ you really need it.
>> >
>> >Why do you need this at all, isn't the reference code fully debugged by
>> >now, given that this has been running for years?  I would only expect to
>> >see something like this in new code that is still being developed.
>>
>> Lustre is still being developed, so it is useful to be able to enable this
>> debugging to catch any new problems that are introduced.
>
> Ok, then use the in-kernel infrastructure for this type of thing, don't
> roll your own and add custom stuff that will later just have to be
> ripped out and converted to use the in-kernel stuff.
>
OK. Will drop this one.

Thanks,
Tao
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