Re: [PATCH 05/12] vmscan: kill prev_priority completely

From: Rik van Riel
Date: Mon Jun 14 2010 - 14:06:24 EST

On 06/14/2010 07:17 AM, Mel Gorman wrote:
From: KOSAKI Motohiro<kosaki.motohiro@xxxxxxxxxxxxxx>

Since 2.6.28 zone->prev_priority is unused. Then it can be removed
safely. It reduce stack usage slightly.

Now I have to say that I'm sorry. 2 years ago, I thought prev_priority
can be integrate again, it's useful. but four (or more) times trying
haven't got good performance number. Thus I give up such approach.

Signed-off-by: KOSAKI Motohiro<kosaki.motohiro@xxxxxxxxxxxxxx>
Reviewed-by: Johannes Weiner<hannes@xxxxxxxxxxx>
Signed-off-by: Mel Gorman<mel@xxxxxxxxx>

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

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