Re: [PATCH 02/12] Allow CONFIG_MIGRATION to be set without CONFIG_NUMAor memory hot-remove

From: Rik van Riel
Date: Tue Feb 16 2010 - 12:43:54 EST


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@xxxxxxxxx>
Reviewed-by: Christoph Lameter<cl@xxxxxxxxxxxxxxxxxxxx>

Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>

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