From fd1c8dd2a32eac56579ce078dbd1c12d8b7f285c Mon Sep 17 00:00:00 2001
From: Arnstein Ressem <aressem@oath.com>
Date: Tue, 28 May 2019 07:33:38 +0000
Subject: Directory for transparent hugepage kernel setting has changed between
 RHEL 6 and 7. This fix will ensure correct settings for both platforms.

---
 vespabase/src/common-env.sh | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/vespabase/src/common-env.sh b/vespabase/src/common-env.sh
index 18ae819ca96..b3d7a68d030 100755
--- a/vespabase/src/common-env.sh
+++ b/vespabase/src/common-env.sh
@@ -229,7 +229,14 @@ drop_caches () {
 
 no_transparent_hugepages () {
     # Should probably also be done on host.
-    dn=/sys/kernel/mm/redhat_transparent_hugepage
+    if grep -q "release 6" /etc/redhat-release; then
+        dn=/sys/kernel/mm/redhat_transparent_hugepage
+        khugepaged_defrag=yes
+    else
+        dn=/sys/kernel/mm/transparent_hugepage
+        khugepaged_defrag=1
+    fi
+
     if [ -w $dn/enabled ]; then
 	echo always > $dn/enabled
     fi
@@ -237,7 +244,7 @@ no_transparent_hugepages () {
 	echo never > $dn/defrag
     fi
     if [ -w $dn/khugepaged/defrag ]; then
-	echo yes > $dn/khugepaged/defrag
+	echo $khugepaged_defrag > $dn/khugepaged/defrag
     fi
 }
 
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