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@@ -314,6 +314,15 @@ will be charged as a new owner of it.
showing for better debug please see the code for meanings.
+5.3 swappiness
+ Similar to /proc/sys/vm/swappiness, but affecting a hierarchy of groups only.
+
+ Following cgroup's swapiness can't be changed.
+ - root cgroup (uses /proc/sys/vm/swappiness).
+ - a cgroup which uses hierarchy and it has child cgroup.
+ - a cgroup which uses hierarchy and not the root of hierarchy.
+
+
6. Hierarchy support
The memory controller supports a deep hierarchy and hierarchical accounting.