Message-ID: <4B7AD92C.6050802@redhat.com>
Date: Tue, 16 Feb 2010 12:43:08 -0500
From: Rik van Riel <riel@redhat.com>
Organization: Red Hat, Inc
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To: Mel Gorman <mel@csn.ul.ie>
CC: Andrea Arcangeli <aarcange@redhat.com>,
       Christoph Lameter <cl@linux-foundation.org>,
       Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
       David Rientjes <rientjes@google.com>,
       KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
       linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 02/12] Allow CONFIG_MIGRATION to be set without CONFIG_NUMA
 or memory hot-remove
References: <1265976059-7459-1-git-send-email-mel@csn.ul.ie> <1265976059-7459-3-git-send-email-mel@csn.ul.ie>
In-Reply-To: <1265976059-7459-3-git-send-email-mel@csn.ul.ie>
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On 02/12/2010 07:00 AM, Mel Gorman wrote:
> CONFIG_MIGRATION currently depends on CONFIG_NUMA or on the architecture
> being able to hot-remove memory. The main users of page migration such as
> sys_move_pages(), sys_migrate_pages() and cpuset process migration are
> only beneficial on NUMA so it makes sense.
>
> As memory compaction will operate within a zone and is useful on both NUMA
> and non-NUMA systems, this patch allows CONFIG_MIGRATION to be set if the
> user selects CONFIG_COMPACTION as an option.
>
> Signed-off-by: Mel Gorman<mel@csn.ul.ie>
> Reviewed-by: Christoph Lameter<cl@linux-foundation.org>

Reviewed-by: Rik van Riel <riel@redhat.com>

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