mds/FSMap.cc: prevent unneeded copy of map entry

Signed-off-by: Michal Jarzabek <stiopa@gmail.com>

diff --git a/src/mds/FSMap.cc b/src/mds/FSMap.cc
index 71edb6494c545c98b0a543bf7eb34cc5e98e2b61..ab202f0975ae2eb5408ae5bfbbaed1f451f36234 100644 (file)
--- a/src/mds/FSMap.cc
+++ b/src/mds/FSMap.cc
@@ -50,7 +50,7 @@ void FSMap::dump(Formatter *f) const
   f->close_section();
 
   f->open_array_section("filesystems");
-  for (const auto fs : filesystems) {
+  for (const auto &fs : filesystems) {
     f->open_object_section("filesystem");
     fs.second->dump(f);
     f->close_section();