(2012/06/07 3:23), Ying Han wrote: > This idea is based on discussion with Michal and Johannes from LSF. > > 1. If soft_limit are all set to MAX, it wastes first three priority iterations > without scanning anything. > > 2. By default every memcg is eligible for softlimit reclaim, and we can also > set the value to MAX for special memcg which is immune to soft limit reclaim. > > There is a behavior change after this patch: (N == DEF_PRIORITY - 2) > > A: usage> softlimit B: usage<= softlimit U: softlimit unset > old: reclaim at each priority reclaim when priority< N reclaim when priority< N > new: reclaim at each priority reclaim when priority< N reclaim at each priority > > Note: I can leave the counter->soft_limit uninitialized, at least all the > caller of res_counter_init() have the memcg as pre-zeroed structure. However, I > might be better not rely on that. > > Signed-off-by: Ying Han<yinghan@xxxxxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>