Messages in this thread | | | Date | Mon, 4 Jan 2010 08:48:38 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [PATCH 1/4] vmstat: remove zone->lock from walk_zones_in_node |
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On Mon, 28 Dec 2009 16:47:22 +0900 (JST) KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:
> The zone->lock is one of performance critical locks. Then, it shouldn't > be hold for long time. Currently, we have four walk_zones_in_node() > usage and almost use-case don't need to hold zone->lock. > > Thus, this patch move locking responsibility from walk_zones_in_node > to its sub function. Also this patch kill unnecessary zone->lock taking. > > Cc: Mel Gorman <mel@csn.ul.ie> > Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewd-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
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