nfs41: nfs41_setup_state_renewal

Move call to get the lease time and the setup of the state
renewal out of nfs4_create_session so that it can be called
after clearing the DRAINING flag.  We use the getattr RPC
to obtain the lease time, which requires a sequence slot.

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

1 files changed, 29 insertions, 5 deletions

diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index ef9622e500e4..9cfe6864d9ed 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -116,16 +116,38 @@ struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp)
 
 #if defined(CONFIG_NFS_V4_1)
 
+static int nfs41_setup_state_renewal(struct nfs_client *clp)
+{
+        int status;
+        struct nfs_fsinfo fsinfo;
+
+        status = nfs4_proc_get_lease_time(clp, &fsinfo);
+        if (status == 0) {
+                /* Update lease time and schedule renewal */
+                spin_lock(&clp->cl_lock);
+                clp->cl_lease_time = fsinfo.lease_time * HZ;
+                clp->cl_last_renewal = jiffies;
+                spin_unlock(&clp->cl_lock);
+
+                nfs4_schedule_state_renewal(clp);
+        }
+
+        return status;
+}
+
 int nfs41_init_clientid(struct nfs_client *clp, struct rpc_cred *cred)
 {
         int status;
 
         status = nfs4_proc_exchange_id(clp, cred);
-        if (status == 0)
-                /* create session schedules state renewal upon success */
-                status = nfs4_proc_create_session(clp);
-        if (status == 0)
-                nfs_mark_client_ready(clp, NFS_CS_READY);
+        if (status != 0)
+                goto out;
+        status = nfs4_proc_create_session(clp);
+        if (status != 0)
+                goto out;
+        nfs41_setup_state_renewal(clp);
+        nfs_mark_client_ready(clp, NFS_CS_READY);
+out:
         return status;
 }
 
@@ -1248,6 +1270,8 @@ out:
         /* Wake up the next rpc task even on error */
         clear_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state);
         rpc_wake_up(&clp->cl_session->fc_slot_table.slot_tbl_waitq);
+        if (status == 0)
+                nfs41_setup_state_renewal(clp);
         return status;
 }