nfsd4: lookup up callback cred only once

Lookup the callback cred once and then use it for all subsequent
callbacks.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 7e1fcc3aade4..b205c7d7bc6a 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -643,6 +643,10 @@ shutdown_callback_client(struct nfs4_client *clp)
                 clp->cl_callback.cb_client = NULL;
                 rpc_shutdown_client(clnt);
         }
+        if (clp->cl_callback.cb_cred) {
+                put_rpccred(clp->cl_callback.cb_cred);
+                clp->cl_callback.cb_cred = NULL;
+        }
 }
 
 static inline void