test/librbd: make get_temp_image_name() static

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/src/test/librbd/test_librbd.cc b/src/test/librbd/test_librbd.cc
index 3a8db0f2ef02b4ba144e8179908e22e1332e41ef..1fe3ce48f0b84a7eb08d3d82bb6d2f4e2716e55f 100644 (file)
--- a/src/test/librbd/test_librbd.cc
+++ b/src/test/librbd/test_librbd.cc
@@ -228,7 +228,7 @@ public:
     *passed = ((flags & RBD_FLAG_OBJECT_MAP_INVALID) == 0);
   }
 
-  std::string get_temp_image_name() {
+  static std::string get_temp_image_name() {
     ++_image_number;
     return "image" + stringify(_image_number);
   }