linux-kernel - Re: [PATCH] Mark res_counter_charge(_locked) with __must

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Date:	Thu, 8 May 2008 18:40:38 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Pavel Emelyanov <xemul@...nvz.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Paul Menage <menage@...gle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Mark res_counter_charge(_locked) with __must_check

On Thu, 08 May 2008 13:05:44 +0400
Pavel Emelyanov <xemul@...nvz.org> wrote:

> Ignoring theirs return value may result in counter underflow
> in the future - when the value charged will be uncharged (or in
> "leaks" - when the value is not uncharged).
> 
> This also prevents from using charging routines to decrement the
> counter value (i.e. uncharge it) ;)
> 
> (Current code works OK with res_counter, however :) )
> 
> Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>
> 
nice check :)

BTW, res_counter_charge_locked() should be extern function ?

Thanks,
-Kame

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