From 10ef1cae8e24e672a8c03085fb592f424886517f Mon Sep 17 00:00:00 2001
From: Akshay Karle <akshay.a.karle@gmail.com>
Date: Wed, 18 Nov 2015 22:49:54 -0300
Subject: [PATCH] use enumerator instead of slurping it

---
 lib/lxc/start_ephemeral.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/lxc/start_ephemeral.rb b/lib/lxc/start_ephemeral.rb
index e7d66ce..e531236 100644
--- a/lib/lxc/start_ephemeral.rb
+++ b/lib/lxc/start_ephemeral.rb
@@ -41,7 +41,7 @@ module LXC
     private
 
     def new_overlay?
-      @new_overlay ||= File.readlines('/proc/filesystems').include?("nodev\toverlay\n")
+      @new_overlay ||= File.open('/proc/filesystems').grep(/nodev\s+overlay/).any?
     end
 
     def random_mac