1 files changed, 4 insertions, 0 deletions

diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index cfdc05527f89..bd8496db135b 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -20,6 +20,9 @@
  *  Boston, MA  02111-1301  USA
  *
  */
+#ifndef FS_9P_V9FS_H
+#define FS_9P_V9FS_H
+
 #include <linux/backing-dev.h>
 
 /**
@@ -197,3 +200,4 @@ v9fs_get_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
         else
                 return v9fs_inode_from_fid(v9ses, fid, sb);
 }
+#endif