linux-kernel - Re: Re: [RFC PATCH 3/4] tracing: Kill tracing_open/release_generic

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Message-ID: <51E7C9E3.1070506@hitachi.com>
Date:	Thu, 18 Jul 2013 19:56:35 +0900
From:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	"zhangwei(Jovi)" <jovi.zhangwei@...wei.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: Re: [RFC PATCH 3/4] tracing: Kill tracing_open/release_generic_file

(2013/07/18 4:19), Oleg Nesterov wrote:
> On 07/16, Steven Rostedt wrote:
>>
>> On Tue, 2013-07-16 at 20:57 +0200, Oleg Nesterov wrote:
>>> trace_array_get() goes away. NOTE! this is actually wrong until we
>>> change instance_delete() path to nullify ->i_private.
>>
>> I think this needs to be done first.
> 
> Do you mean "change instance_delete() path to nullify ->i_private" ?
> 
> Yes. Well yes and no, afaics, but please ignore. Of course, I won't
> send the patches with the holes which I knew about.
> 
> Once again, this is just RFC to know your and Masami's opinion. If
> you think this can work, I'll try to resend this series with the
> additional bits to cover instance_delete() too. _Afaics_ this needs
> some temporary uglifications "in between".

I think your proposal goes a good direction, but it also requires
completeness, because, as I pointed, we have to take care of all
operations are correctly checked except for open/close.

So, I agree with Steven, I'd like to see a complete patchset.

Thank you,


-- 
Masami HIRAMATSU
IT Management Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@...achi.com


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