linux-kernel - Re: [PATCH 3/3 -mm] generic-ipi: fix the race between generic_smp_call_function_*() and hotplug

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Date:	Thu, 30 Jul 2009 16:23:56 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>, mingo@...e.hu,
	jens.axboe@...cle.com, nickpiggin@...oo.com.au,
	rusty@...tcorp.com.au, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3 -mm] generic-ipi: fix the race between generic_smp_call_function_*()
 and hotplug_cfd()

Xiao Guangrong wrote:
> 
> Peter Zijlstra wrote:
> 
>> It introduces this run_callbacks thing to two functions, but nothing
>> actually uses that... makes me suspicious there's something missing.
>>
> 
> Hi Peter,
> 
> Thanks for your point out.
> I'm sorry for making a mistake when I make this patch, I'll send the new
> patch soon
> 
> Hi Andrew,
> 
> I can't apply "kernel/smp.c: relocate some code" because this patch are
> base on my other patch: "generic-ipi: make struct call_function_data lockless",
> which can be found at:
> 	http://lkml.org/lkml/2009/7/24/63
> 

I'm a bit confused what's the problem here.

> I'll rewrite your patch base on it
> 

No, instead you should cook *your* patch against lastest -mm tree.

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