From b09b68c4a961ea33ee74cfa1f479ee335efb3a42 Mon Sep 17 00:00:00 2001
From: Valentyn Boginskey <valentyn@greenhouse.io>
Date: Sat, 28 Jul 2018 07:20:42 -0400
Subject: [PATCH] Fix cache reporting with cgroup hierarchy

---
 container/libcontainer/handler.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/container/libcontainer/handler.go b/container/libcontainer/handler.go
index 9a8956c3..e4a0924a 100644
--- a/container/libcontainer/handler.go
+++ b/container/libcontainer/handler.go
@@ -498,12 +498,13 @@ func setMemoryStats(s *cgroups.Stats, ret *info.ContainerStats) {
 	ret.Memory.Usage = s.MemoryStats.Usage.Usage
 	ret.Memory.MaxUsage = s.MemoryStats.Usage.MaxUsage
 	ret.Memory.Failcnt = s.MemoryStats.Usage.Failcnt
-	ret.Memory.Cache = s.MemoryStats.Stats["cache"]
 
 	if s.MemoryStats.UseHierarchy {
+		ret.Memory.Cache = s.MemoryStats.Stats["total_cache"]
 		ret.Memory.RSS = s.MemoryStats.Stats["total_rss"]
 		ret.Memory.Swap = s.MemoryStats.Stats["total_swap"]
 	} else {
+		ret.Memory.Cache = s.MemoryStats.Stats["cache"]
 		ret.Memory.RSS = s.MemoryStats.Stats["rss"]
 		ret.Memory.Swap = s.MemoryStats.Stats["swap"]
 	}