On Mon, May 14, 2012 at 07:32:42PM +0900, KAMEZAWA Hiroyuki wrote: > [PATCH 2/6] memcg: add res_counter_uncharge_until() > > From: Frederic Weisbecker <fweisbec@xxxxxxxxx> > > At killing res_counter which is a child of other counter, > we need to do > res_counter_uncharge(child, xxx) > res_counter_charge(parent, xxx) > > This is not atomic and wasting cpu. This patch adds > res_counter_uncharge_until(). This function's uncharge propagates > to ancestors until specified res_counter. > > res_counter_uncharge_until(child, parent, xxx) > > Now, ops is atomic and efficient. > > Changelog since v2 > - removed unnecessary lines. > - added 'From' , this patch comes from his one. > > Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx> > Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>