From f6edee0fe198aef28d60bdf887bc180acb0a8df5 Mon Sep 17 00:00:00 2001
From: Ted Yu <yuzhihong@gmail.com>
Date: Sat, 1 Jun 2019 15:48:52 -0700
Subject: [PATCH] Use Mutex for synchronization in imageCache

---
 pkg/kubelet/images/image_gc_manager.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkg/kubelet/images/image_gc_manager.go b/pkg/kubelet/images/image_gc_manager.go
index 4c6feabb17b..be6689943b3 100644
--- a/pkg/kubelet/images/image_gc_manager.go
+++ b/pkg/kubelet/images/image_gc_manager.go
@@ -107,8 +107,8 @@ type realImageGCManager struct {
 
 // imageCache caches latest result of ListImages.
 type imageCache struct {
-	// sync.RWMutex is the mutex protects the image cache.
-	sync.RWMutex
+	// sync.Mutex is the mutex protects the image cache.
+	sync.Mutex
 	// images is the image cache.
 	images []container.Image
 }