#endif
/*
- * A group is eligible for the soft limit reclaim if it is
- * a) is over its soft limit
+ * A group is eligible for the soft limit reclaim under the given root
+ * hierarchy if
+ * a) it is over its soft limit
* b) any parent up the hierarchy is over its soft limit
*/
-bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg)
+bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg,
+ struct mem_cgroup *root)
{
struct mem_cgroup *parent = memcg;
return true;
/*
- * If any parent up the hierarchy is over its soft limit then we
- * have to obey and reclaim from this group as well.
+ * If any parent up to the root in the hierarchy is over its soft limit
+ * then we have to obey and reclaim from this group as well.
*/
while((parent = parent_mem_cgroup(parent))) {
if (res_counter_soft_limit_excess(&parent->res))
return true;
+ if (parent == root)
+ break;
}
return false;