linux-kernel - Re: [PATCH] call_usermodehelper_setup() should use GFP

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Message-Id: <20080508163039.0EF4.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date:	Thu, 08 May 2008 16:31:29 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	kosaki.motohiro@...fujitsu.com, Paul Menage <menage@...gle.com>,
	Jeremy Fitzhardinge <jeremy@...source.com>,
	Andi Kleen <ak@...e.de>, LKML <linux-kernel@...r.kernel.org>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH] call_usermodehelper_setup() should use GFP_KERNEL

> KOSAKI Motohiro wrote:
> > Now, call_usermodehelper_setup() use GFP_ATOMIC.
> > but it is slighly odd.
> > because call_usermodehelper() is always called process context.
> > 
> 
> Are you sure? I found the following call chain:
> 
>   static irqreturn_t power_handler(int irq, void *dev_id)
>   ->orderly_poweroff(true);
>     ->call_usermodehelper_setup()

sorry, you are right.
I'll make patch again.



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