SERVER-42165 Replace uses of stdx::mutex with mongo::Mutex

1 files changed, 3 insertions, 3 deletions

diff --git a/src/mongo/s/cluster_last_error_info.h b/src/mongo/s/cluster_last_error_info.h
index 0cc07fa27ac..af13045099d 100644
--- a/src/mongo/s/cluster_last_error_info.h
+++ b/src/mongo/s/cluster_last_error_info.h
@@ -63,7 +63,7 @@ public:
      * gets shards used on the previous request
      */
     std::set<std::string>* getPrevShardHosts() const {
-        stdx::lock_guard<stdx::mutex> lock(_mutex);
+        stdx::lock_guard<Latch> lock(_mutex);
         return &_prev->shardHostsWritten;
     }
 
@@ -71,7 +71,7 @@ public:
      * Gets the shards, hosts, and opTimes the client last wrote to with write commands.
      */
     const HostOpTimeMap& getPrevHostOpTimes() const {
-        stdx::lock_guard<stdx::mutex> lock(_mutex);
+        stdx::lock_guard<Latch> lock(_mutex);
         return _prev->hostOpTimes;
     }
 
@@ -89,7 +89,7 @@ private:
     };
 
     // Protects _infos, _cur, and _prev.
-    mutable stdx::mutex _mutex;
+    mutable Mutex _mutex = MONGO_MAKE_LATCH("ClusterLastErrorInfo::_mutex");
 
     // We use 2 so we can flip for getLastError type operations.
     RequestInfo _infos[2];