mds: use reference to avoid copy

Making a copy in this range-for is unnecessary.

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

diff --git a/src/mds/FSMap.cc b/src/mds/FSMap.cc
index eb3dd74f0169e5bb719b2ac7f5086b487bee0dba..fe062779150b38b00e63429d33b103aae3f21616 100644 (file)
--- a/src/mds/FSMap.cc
+++ b/src/mds/FSMap.cc
@@ -274,7 +274,7 @@ void FSMap::encode(bufferlist& bl, uint64_t features) const
       // mds_info with the standbys to get a pre-jewel-style mon MDSMap.
       MDSMap full_mdsmap = fs->mds_map;
       full_mdsmap.epoch = epoch;
-      for (const auto p : standby_daemons) {
+      for (const auto &p : standby_daemons) {
         full_mdsmap.mds_info[p.first] = p.second;
       }