linux-kernel - Re: [PATCH 08/11] Add /proc trigger for memory compaction

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Message-ID: <alpine.DEB.2.00.1003231323410.10178@router.home>
Date:	Tue, 23 Mar 2010 13:25:47 -0500 (CDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Mel Gorman <mel@....ul.ie>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Adam Litke <agl@...ibm.com>, Avi Kivity <avi@...hat.com>,
	David Rientjes <rientjes@...gle.com>,
	Minchan Kim <minchan.kim@...il.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH 08/11] Add /proc trigger for memory compaction

On Tue, 23 Mar 2010, Mel Gorman wrote:

> diff --git a/mm/compaction.c b/mm/compaction.c
> index 0d2e8aa..faa9b53 100644
> --- a/mm/compaction.c
> +++ b/mm/compaction.c
> @@ -346,3 +347,63 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
>  	return ret;
>  }
>
> +/* Compact all zones within a node */
> +static int compact_node(int nid)
> +{
> +	int zoneid;
> +	pg_data_t *pgdat;
> +	struct zone *zone;
> +
> +	if (nid < 0 || nid > nr_node_ids || !node_online(nid))

Must be nid >= nr_node_ids.

Otherwise

Reviewed-by: Christoph Lameter <cl@...ux-foundation.org>

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