nfs41: introduce get_state_renewal_cred

Use the machine cred for sending SEQUENCE to renew
the client's lease.

[revamp patch for new state management design starting 2.6.29]
[nfs41: support minorversion 1 for nfs4_check_lease]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfs41: get cred in exchange_id when cred arg is NULL]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfs41: use cl_machined_cred instead of cl_ex_cred]
    Since EXCHANGE_ID insists on using the machine credential, cl_ex_cred is
    not needed. nfs4_proc_exchange_id() is only called if the machine credential
    is available. Remove the credential logic from nfs4_proc_exchange_id.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index da481bda44f7..f862a66e5fb9 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4236,6 +4236,7 @@ static int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
 
         dprintk("--> %s\n", __func__);
         BUG_ON(clp == NULL);
+
         p = (u32 *)verifier.data;
         *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
         *p = htonl((u32)clp->cl_boot_time.tv_nsec);
@@ -4795,12 +4796,14 @@ struct nfs4_state_recovery_ops nfs4_nograce_recovery_ops = {
 
 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
         .sched_state_renewal = nfs4_proc_async_renew,
+        .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
         .renew_lease = nfs4_proc_renew,
 };
 
 #if defined(CONFIG_NFS_V4_1)
 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
         .sched_state_renewal = nfs41_proc_async_sequence,
+        .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
         .renew_lease = nfs4_proc_sequence,
 };
 #endif