1 files changed, 9 insertions, 3 deletions
diff --git a/src/mongo/db/storage/mmap_v1/mmap_v1_extent_manager.h b/src/mongo/db/storage/mmap_v1/mmap_v1_extent_manager.h
index a2f2931e1b4..a66a19f8fb3 100644
--- a/src/mongo/db/storage/mmap_v1/mmap_v1_extent_manager.h
+++ b/src/mongo/db/storage/mmap_v1/mmap_v1_extent_manager.h
@@ -76,6 +76,12 @@ class MmapV1ExtentManager : public ExtentManager {
     MONGO_DISALLOW_COPYING(MmapV1ExtentManager);
 
 public:
+    class Factory : public ExtentManager::Factory {
+        virtual std::unique_ptr<ExtentManager> create(StringData dbname,
+                                                      StringData path,
+                                                      bool directoryPerDB) final;
+    };
+
     /**
      * @param freeListDetails this is a reference into the .ns file
      *        while a bit odd, this is not a layer violation as extents
@@ -141,10 +147,10 @@ public:
     /**
      * Not thread safe, requires a database exclusive lock
      */
-    DataFileVersion getFileFormat(OperationContext* txn) const;
-    void setFileFormat(OperationContext* txn, DataFileVersion newVersion);
+    DataFileVersion getFileFormat(OperationContext* txn) const final;
+    void setFileFormat(OperationContext* txn, DataFileVersion newVersion) final;
 
-    const DataFile* getOpenFile(int n) const {
+    const DataFile* getOpenFile(int n) const final {
         return _getOpenFile(n);
     }