linux-kernel - Re: [PATCH v2] hugetlbfs: correct handling of negative input to /proc/sys/vm/nr

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Message-ID: <20110223090113.GI15652@csn.ul.ie>
Date:	Wed, 23 Feb 2011 09:01:14 +0000
From:	Mel Gorman <mel@....ul.ie>
To:	Petr Holasek <pholasek@...hat.com>
Cc:	linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Wu Fengguang <fengguang.wu@...el.com>, linux-mm@...ck.org
Subject: Re: [PATCH v2] hugetlbfs: correct handling of negative input to
	/proc/sys/vm/nr_hugepages

On Tue, Feb 22, 2011 at 09:17:04PM +0100, Petr Holasek wrote:
> When user insert negative value into /proc/sys/vm/nr_hugepages it will  
> result
> in the setting a random number of HugePages in system (can be easily showed
> at /proc/meminfo output). This patch fixes the wrong behavior so that the
> negative input will result in nr_hugepages value unchanged.
>
> v2: same fix was also done in hugetlb_overcommit_handler function
>     as suggested by reviewers.
>
> Signed-off-by: Petr Holasek <pholasek@...hat.com>
> Reviewed-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>

Thanks

Acked-by: Mel Gorman <mel@....ul.ie>

-- 
Mel Gorman
SUSE Labs
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