mds: refactor const ref return to avoid mem alloc

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>

diff --git a/src/mds/SessionMap.h b/src/mds/SessionMap.h
index 7ae0ed28e676c34ba63b37e391aa52ba063c221b..730f2cbf85f0ef597edb4d54601d5c9600f4ade0 100644 (file)
--- a/src/mds/SessionMap.h
+++ b/src/mds/SessionMap.h
@@ -125,7 +125,7 @@ public:
   }
   void decode(bufferlist::const_iterator &p);
   void set_client_metadata(std::map<std::string, std::string> const &meta);
-  std::string get_human_name() const {return human_name;}
+  const std::string& get_human_name() const {return human_name;}
 
   // Ephemeral state for tracking progress of capability recalls
   utime_t recalled_at;  // When was I asked to SESSION_RECALL?