From 3ce1dcc25d32a9067025ecb9a4870f7a7a28f003 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Fri, 24 Sep 2021 13:51:39 +0200
Subject: [PATCH] daemon.UsingSystemd(): don't call getCD() multiple times

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 daemon/daemon_unix.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/daemon/daemon_unix.go b/daemon/daemon_unix.go
index d96fa805db..86d685d36d 100644
--- a/daemon/daemon_unix.go
+++ b/daemon/daemon_unix.go
@@ -628,11 +628,13 @@ func verifyCgroupDriver(config *config.Config) error {
 
 // UsingSystemd returns true if cli option includes native.cgroupdriver=systemd
 func UsingSystemd(config *config.Config) bool {
-	if getCD(config) == cgroupSystemdDriver {
+	cd := getCD(config)
+
+	if cd == cgroupSystemdDriver {
 		return true
 	}
 	// On cgroup v2 hosts, default to systemd driver
-	if getCD(config) == "" && cgroups.Mode() == cgroups.Unified && isRunningSystemd() {
+	if cd == "" && cgroups.Mode() == cgroups.Unified && isRunningSystemd() {
 		return true
 	}
 	return false