linux-kernel - Re: [PATCH] Make new setting of panic_on

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Message-ID: <20070420124157.GA21709@kvack.org>
Date:	Fri, 20 Apr 2007 08:41:57 -0400
From:	Benjamin LaHaise <bcrl@...ck.org>
To:	Yasunori Goto <y-goto@...fujitsu.com>
Cc:	Andrew Morton <akpm@...l.org>,
	Christoph Lameter <clameter@....com>,
	Linux Kernel ML <linux-kernel@...r.kernel.org>,
	Larry Woodman <lwoodman@...hat.com>
Subject: Re: [PATCH] Make new setting of panic_on_oom

On Fri, Apr 20, 2007 at 08:43:56PM +0900, Yasunori Goto wrote:
> 
> The current panic_on_oom may not work if there is a process using 
> cpusets/mempolicy, because other nodes' memory may still free.
> But some people want failover by panic ASAP even if they are used.
> This patch makes new setting for its request.
> 
> This is not tested yet. But it would work.

>  	read_lock(&tasklist_lock);
>  
> +	if (sysctl_panic_on_oom == 2)
> +		panic("out of memory. Compulsory panic_on_oom is selected.\n");
> +

Wouldn't it be safer to put the panic before the read_lock()?

		-ben
-- 
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