From c6047f887a362cb8d96624fbd73484ca703acf53 Mon Sep 17 00:00:00 2001
From: William Hubbs <w.d.hubbs@gmail.com>
Date: Mon, 26 Feb 2018 14:33:15 -0600
Subject: [PATCH] cgroups: add rc_cgroup_memory_use_hierarchy setting for
 cgroups v1

---
 etc/rc.conf       | 5 +++++
 init.d/cgroups.in | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/etc/rc.conf b/etc/rc.conf
index b7296d35..32c905d4 100644
--- a/etc/rc.conf
+++ b/etc/rc.conf
@@ -227,6 +227,11 @@ rc_tty_number=12
 # /sys/fs/cgroup in hybrid or legacy mode.
 #rc_controller_cgroups="YES"
 
+# The following setting turns on the memory.use_hierarchy setting in the
+# root memory cgroup for cgroups v1.
+# It must be set to yes in this file if you want this functionality.
+#rc_cggroup_memory_use_hierarchy="NO"
+
 # The following settings allow you to set up values for the cgroups version 1
 # controllers for your services.
 # They can be set in this file;, however, if you do this, the settings
diff --git a/init.d/cgroups.in b/init.d/cgroups.in
index 8ec91ef6..01f5dd48 100644
--- a/init.d/cgroups.in
+++ b/init.d/cgroups.in
@@ -57,6 +57,9 @@ cgroup1_controllers()
 				mkdir "/sys/fs/cgroup/${name}"
 				mount -n -t cgroup -o "${cgroup_opts},${name}" \
 					"${name}" "/sys/fs/cgroup/${name}"
+					yesno "${rc_cgroup_memory_use_hierarchy:-no}" &&
+					[ "${name}" = memory ] &&
+					echo 1 > /sys/fs/cgroup/memory/memory.use_hierarchy
 				;;
 		esac
 	done < /proc/cgroups