From fb36bef4e4884a62b70cd98f7d2d52abf8091106 Mon Sep 17 00:00:00 2001
From: Martin Pitt <martin.pitt@ubuntu.com>
Date: Thu, 10 Nov 2016 05:33:13 +0100
Subject: [PATCH] core: don't use the unified hierarchy for the systemd cgroup
 yet (#4628)

Too many things don't get along with the unified hierarchy yet:

 * https://github.com/opencontainers/runc/issues/1175
 * https://github.com/docker/docker/issues/28109
 * https://github.com/lxc/lxc/issues/1280

So revert the default to the legacy hierarchy for now. Developers of the above
software can opt into the unified hierarchy with
"systemd.legacy_systemd_cgroup_controller=0".
(cherry picked from commit 843d5baf6aad6c53fc00ea8d95d83209a4f92de1)
---
 src/basic/cgroup-util.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c
index cede835920..134e6e3664 100644
--- a/src/basic/cgroup-util.c
+++ b/src/basic/cgroup-util.c
@@ -2423,10 +2423,10 @@ bool cg_is_unified_systemd_controller_wanted(void) {
 
                 r = get_proc_cmdline_key("systemd.legacy_systemd_cgroup_controller=", &value);
                 if (r < 0)
-                        return true;
+                        return false;
 
                 if (r == 0)
-                        wanted = true;
+                        wanted = false;
                 else
                         wanted = parse_boolean(value) <= 0;
         }