On Tue, 29 Mar 2011 10:15:11 +0900 Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> wrote: > === > From: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> > > Since 569b846d(memcg: coalesce uncharge during unmap/truncate), we do batched > (delayed) uncharge at truncation/unmap. And since cdec2e42(memcg: coalesce > charging via percpu storage), we have percpu cache for res_counter. > > These changes improved performance of memory cgroup very much, but made > res_counter->usage usually have a bigger value than the actual value of memory usage. > So, *.usage_in_bytes, which show res_counter->usage, are not desirable for precise > values of memory(and swap) usage anymore. > > Instead of removing these files completely(because we cannot know res_counter->usage > without them), this patch updates the meaning of those files. > > Signed-off-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx 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>