NFSv4: Reintroduce machine creds

We need to try to ensure that we always use the same credentials whenever
we re-establish the clientid on the server. If not, the server won't
recognise that we're the same client, and so may not allow us to recover
state.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index ac7e4fb943ea..c9beacd16c00 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -32,6 +32,8 @@ struct nfs_client {
         const struct nfs_rpc_ops *rpc_ops;      /* NFS protocol vector */
         int                     cl_proto;       /* Network transport protocol */
 
+        struct rpc_cred         *cl_machine_cred;
+
 #ifdef CONFIG_NFS_V4
         u64                     cl_clientid;    /* constant */
         nfs4_verifier           cl_confirm;