nfs: disintegrate UAPI for nfs

[~andy/linux] / block / blk-cgroup.c

diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index f3b44a65fc7ad5f127bee8bcbadf5b486a7e5c71..cafcd743118969daec377f52f09e41594d188347 100644 (file)
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -737,6 +737,14 @@ struct cgroup_subsys blkio_subsys = {
        .subsys_id = blkio_subsys_id,
        .base_cftypes = blkcg_files,
        .module = THIS_MODULE,
+
+       /*
+        * blkio subsystem is utterly broken in terms of hierarchy support.
+        * It treats all cgroups equally regardless of where they're
+        * located in the hierarchy - all cgroups are treated as if they're
+        * right below the root.  Fix it and remove the following.
+        */
+       .broken_hierarchy = true,
 };
 EXPORT_SYMBOL_GPL(blkio_subsys);