From: Tejun Heo <tj@kernel.org>
Date: Wed, 5 Aug 2015 20:03:19 +0000 (-0400)
Subject: cgroup: export cgrp_dfl_root
X-Git-Tag: v4.3-rc1~21^2~45^2~3
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d0ec4230a077521a984ac604acbd8c15cc12a664;p=karo-tx-linux.git

cgroup: export cgrp_dfl_root

While cgroup subsystems can't be modules, blkcg supports dynamically
loadable policies which interact with cgroup core.  Export
cgrp_dfl_root so that cgroup_on_dfl() can be used in those modules.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
---

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index f89d9292eee6..3f6641632f73 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -145,6 +145,7 @@ static const char *cgroup_subsys_name[] = {
  * part of that cgroup.
  */
 struct cgroup_root cgrp_dfl_root;
+EXPORT_SYMBOL_GPL(cgrp_dfl_root);
 
 /*
  * The default hierarchy always exists but is hidden until mounted for the