add const to member function

Signed-off-by: yonghengdexin735 <zhang.zezhu@zte.com.cn>

diff --git a/src/messages/MDentryLink.h b/src/messages/MDentryLink.h
index eb079da2496ffd8f16ac72cf958d67a515a17493..5b4b6b280453bb7d7bc87f053e93aad99f46da31 100644 (file)
--- a/src/messages/MDentryLink.h
+++ b/src/messages/MDentryLink.h
@@ -23,10 +23,10 @@ class MDentryLink : public Message {
   bool is_primary = false;
 
  public:
-  dirfrag_t get_subtree() { return subtree; }
-  dirfrag_t get_dirfrag() { return dirfrag; }
-  string& get_dn() { return dn; }
-  bool get_is_primary() { return is_primary; }
+  dirfrag_t get_subtree() const { return subtree; }
+  dirfrag_t get_dirfrag() const { return dirfrag; }
+  const string& get_dn() const { return dn; }
+  bool get_is_primary() const { return is_primary; }
 
   bufferlist bl;