cgroup: make interface files visible iff enabled on cgroup->subtree_control

[linux-beck.git] / include / linux / cgroup.h

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 8d52c8e5b510a9ccab4eafbcf8ed3721734e2a8d..5287f931680a641eb81193e0a1970f96e3e01443 100644 (file)
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -208,6 +208,8 @@ struct cgroup {
         * ->subtree_control is the one configured through
         * "cgroup.subtree_control" while ->child_subsys_mask is the
         * effective one which may have more subsystems enabled.
+        * Controller knobs are made available iff it's enabled in
+        * ->subtree_control.
         */
        unsigned int subtree_control;
        unsigned int child_subsys_mask;