--- zzzz-none-000/linux-3.10.107/net/ceph/auth_none.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/ceph/auth_none.h	2021-02-04 17:41:59.000000000 +0000
@@ -23,7 +23,7 @@
 	struct ceph_none_authorizer au;   /* we only need one; it's static */
 };
 
-extern int ceph_auth_none_init(struct ceph_auth_client *ac);
+int ceph_auth_none_init(struct ceph_auth_client *ac);
 
 #endif