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

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Message-Id: <20080508183902.0EF7.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date:	Thu, 08 May 2008 18:40:04 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	kosaki.motohiro@...fujitsu.com, Li Zefan <lizf@...fujitsu.com>,
	Paul Menage <menage@...gle.com>,
	Jeremy Fitzhardinge <jeremy@...source.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH] call_usermodehelper_setup() should use GFP_KERNEL

> > > 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.
> 
> How many times do we have to make this mistake :(
> 
> Only the caller knows what allocation mode the callee can use. 
> call_usermodehelper_setup() should be extended to take a gfp_t argument.

Agreed.
I'm testing so patch.
I'll post tommorow, myabe.



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