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-rw-r--r--include/linux/cgroup.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 5047355b9a0f..09f1a1408ae0 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -272,6 +272,8 @@ enum {
* - memcg: use_hierarchy is on by default and the cgroup file for
* the flag is not created.
*
+ * - blkcg: blk-throttle becomes properly hierarchical.
+ *
* The followings are planned changes.
*
* - release_agent will be disallowed once replacement notification