1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 4afe544d3547..8a111dd42d7a 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -305,6 +305,8 @@ enum {
          *   the flag is not created.
          *
          * - blkcg: blk-throttle becomes properly hierarchical.
+         *
+         * - debug: disallowed on the default hierarchy.
          */
         CGRP_ROOT_SANE_BEHAVIOR = (1 << 0),