Messages in this thread | | | Date | Fri, 10 Dec 2010 10:19:07 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [PATCH 4/6] mm: kswapd: Reset kswapd_max_order and classzone_idx after reading |
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On Thu, 9 Dec 2010 11:18:18 +0000 Mel Gorman <mel@csn.ul.ie> wrote:
> When kswapd wakes up, it reads its order and classzone from pgdat and > calls balance_pgdat. While its awake, it potentially reclaimes at a high > order and a low classzone index. This might have been a once-off that > was not required by subsequent callers. However, because the pgdat > values were not reset, they remain artifically high while > balance_pgdat() is running and potentially kswapd enters a second > unnecessary reclaim cycle. Reset the pgdat order and classzone index > after reading. > > Signed-off-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
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