linux-kernel - Re: [patch] mm, show_mem: suppress page counts in non-blockable contexts

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Message-ID: <512E2B91.6000506@linux.vnet.ibm.com>
Date:	Wed, 27 Feb 2013 07:51:45 -0800
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	David Rientjes <rientjes@...gle.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [patch] mm, show_mem: suppress page counts in non-blockable contexts

On 02/26/2013 04:46 PM, David Rientjes wrote:
> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -99,6 +99,9 @@ void show_mem(unsigned int filter)
>  	printk("Mem-info:\n");
>  	show_free_areas(filter);
> 
> +	if (filter & SHOW_MEM_FILTER_PAGE_COUNT)
> +		return;
> +

Won't this just look like a funky truncated warning to the end user?

Seems like we should at least dump out a little message for this stuff
to say that it's intentionally truncated?

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