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, 1 insertions, 0 deletions

diff --git a/include/linux/nfsd/state.h b/include/linux/nfsd/state.h
index 4d61c873feed..8d882a3eb4b9 100644
--- a/include/linux/nfsd/state.h
+++ b/include/linux/nfsd/state.h
@@ -97,6 +97,7 @@ struct nfs4_callback {
         /* RPC client info */
         atomic_t                cb_set;     /* successful CB_NULL call */
         struct rpc_clnt *       cb_client;
+        struct rpc_cred *       cb_cred;
 };
 
 /* Maximum number of slots per session. 128 is useful for long haul TCP */