nfsd4: use common rpc_cred for all callbacks

Callbacks are always made using the machine's identity, so we can use a
single auth_generic credential shared among callbacks to all clients and
let the rpc code take care of the rest.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

1 files changed, 1 insertions, 5 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 11db40cb2f2b..0445192d660d 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -696,10 +696,6 @@ shutdown_callback_client(struct nfs4_client *clp)
                 clp->cl_cb_conn.cb_client = NULL;
                 rpc_shutdown_client(clnt);
         }
-        if (clp->cl_cb_conn.cb_cred) {
-                put_rpccred(clp->cl_cb_conn.cb_cred);
-                clp->cl_cb_conn.cb_cred = NULL;
-        }
 }
 
 static inline void
@@ -4020,7 +4016,7 @@ __nfs4_state_start(void)
                 return -ENOMEM;
         queue_delayed_work(laundry_wq, &laundromat_work, grace_time);
         set_max_delegations();
-        return 0;
+        return set_callback_cred();
 }
 
 int