Re: [PATCH 3/5] mm: compaction: Capture a suitable high-order pageimmediately when it is made available

[Minchan Kim]

On Thu, Aug 09, 2012 at 02:49:23PM +0100, Mel Gorman wrote:
> While compaction is migrating pages to free up large contiguous blocks for
> allocation it races with other allocation requests that may steal these
> blocks or break them up. This patch alters direct compaction to capture a
> suitable free page as soon as it becomes available to reduce this race. It
> uses similar logic to split_free_page() to ensure that watermarks are
> still obeyed.
> 
> Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
> Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>
Reviewed-by: Minchan Kim <minchan@xxxxxxxxxx>

-- 
Kind regards,
Minchan Kim
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