Re: [PATCH] mm: Improve documentation of page_order

From: Minchan Kim
Date: Mon Jan 20 2014 - 01:11:39 EST

On Fri, Jan 17, 2014 at 02:32:21PM +0000, Mel Gorman wrote:
> Developers occasionally try and optimise PFN scanners by using page_order
> but miss that in general it requires zone->lock. This has happened twice for
> compaction.c and rejected both times. This patch clarifies the documentation
> of page_order and adds a note to compaction.c why page_order is not used.
> Signed-off-by: Mel Gorman <mgorman@xxxxxxx>

Except Laura pointed out,

Acked-by: Minchan Kim <minchan@xxxxxxxxxx>

Thanks for following up this issue without forgetting.
Kind regards,
Minchan Kim
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