From c9f4f90689a0a07f22ba8701981f20fad44871fd Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@newdream.net>
Date: Mon, 25 Jul 2011 13:53:04 -0700
Subject: [PATCH] sync_filesystem: er, fix #define

Signed-off-by: Sage Weil <sage@newdream.net>
---
 src/common/sync_filesystem.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/common/sync_filesystem.h b/src/common/sync_filesystem.h
index 3612dc7d3027b..78afdf13479fa 100644
--- a/src/common/sync_filesystem.h
+++ b/src/common/sync_filesystem.h
@@ -15,7 +15,9 @@
 #ifndef CEPH_SYNC_FILESYSTEM_H
 #define CEPH_SYNC_FILESYSTEM_H
 
-#define _GNU_SOURCE
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
 #include <unistd.h>
 
 inline int sync_filesystem(int fd)
-- 
2.39.5