folly membarrier patch

diff --git a/folly/portability/SysMembarrier.cpp b/folly/portability/SysMembarrier.cpp
index 9a3d307..486ccf5 100644
--- a/folly/portability/SysMembarrier.cpp
+++ b/folly/portability/SysMembarrier.cpp
@@ -24,6 +24,7 @@

 #if FOLLY_X64 && !FOLLY_MOBILE && defined(__linux__)
 #define FOLLY_USE_SYS_MEMBARRIER 1
+#include <linux/membarrier.h>
 #if !defined(__NR_membarrier)
 #define __NR_membarrier 324
 #define MEMBARRIER_CMD_QUERY 0
@@ -40,12 +41,12 @@ bool sysMembarrierAvailable() {
   }

 #if FOLLY_USE_SYS_MEMBARRIER
-  auto r = syscall(__NR_membarrier, MEMBARRIER_CMD_QUERY, /* flags = */ 0);
+  auto r = syscall(__NR_membarrier, membarrier_cmd::MEMBARRIER_CMD_QUERY, /* flags = */ 0);
   if (r == -1) {
     return false;
   }

-  return r & MEMBARRIER_CMD_SHARED;
+  return r & membarrier_cmd::MEMBARRIER_CMD_SHARED;
 #else
   return false;
 #endif
@@ -53,7 +54,7 @@ bool sysMembarrierAvailable() {

 int sysMembarrier() {
 #if FOLLY_USE_SYS_MEMBARRIER
-  return syscall(__NR_membarrier, MEMBARRIER_CMD_SHARED, /* flags = */ 0);
+  return syscall(__NR_membarrier, membarrier_cmd::MEMBARRIER_CMD_SHARED, /* flags = */ 0);
 #else
   return -1;
 #endif