simplify access to ecryptfs inodes in ->readpage() and friends
[safe/jmp/linux-2.6] / fs / nfs / nfs4renewd.c
index 92b43e8..d87f103 100644 (file)
  * as an rpc_task, not a real kernel thread, so it always runs in rpciod's
  * context.  There is one renewd per nfs_server.
  *
- * TODO: If the send queue gets backlogged (e.g., if the server goes down),
- * we will keep filling the queue with periodic RENEW requests.  We need a
- * mechanism for ensuring that if renewd successfully sends off a request,
- * then it only wakes up when the request is finished.  Maybe use the
- * child task framework of the RPC layer?
  */
 
 #include <linux/mm.h>
@@ -63,7 +58,7 @@ nfs4_renew_state(struct work_struct *work)
        struct nfs_client *clp =
                container_of(work, struct nfs_client, cl_renewd.work);
        struct rpc_cred *cred;
-       long lease, timeout;
+       long lease;
        unsigned long last, now;
 
        ops = nfs4_state_renewal_ops[clp->cl_minorversion];
@@ -75,10 +70,9 @@ nfs4_renew_state(struct work_struct *work)
        lease = clp->cl_lease_time;
        last = clp->cl_last_renewal;
        now = jiffies;
-       timeout = (2 * lease) / 3 + (long)last - (long)now;
        /* Are we close to a lease timeout? */
        if (time_after(now, last + lease/3)) {
-               cred = nfs4_get_renew_cred_locked(clp);
+               cred = ops->get_state_renewal_cred_locked(clp);
                spin_unlock(&clp->cl_lock);
                if (cred == NULL) {
                        if (list_empty(&clp->cl_delegations)) {
@@ -90,19 +84,15 @@ nfs4_renew_state(struct work_struct *work)
                        /* Queue an asynchronous RENEW. */
                        ops->sched_state_renewal(clp, cred);
                        put_rpccred(cred);
+                       goto out_exp;
                }
-               timeout = (2 * lease) / 3;
-               spin_lock(&clp->cl_lock);
-       } else
+       } else {
                dprintk("%s: failed to call renewd. Reason: lease not expired \n",
                                __func__);
-       if (timeout < 5 * HZ)    /* safeguard */
-               timeout = 5 * HZ;
-       dprintk("%s: requeueing work. Lease period = %ld\n",
-                       __func__, (timeout + HZ - 1) / HZ);
-       cancel_delayed_work(&clp->cl_renewd);
-       schedule_delayed_work(&clp->cl_renewd, timeout);
-       spin_unlock(&clp->cl_lock);
+               spin_unlock(&clp->cl_lock);
+       }
+       nfs4_schedule_state_renewal(clp);
+out_exp:
        nfs_expire_unreferenced_delegations(clp);
 out:
        dprintk("%s: done\n", __func__);
@@ -127,12 +117,6 @@ nfs4_schedule_state_renewal(struct nfs_client *clp)
 }
 
 void
-nfs4_renewd_prepare_shutdown(struct nfs_server *server)
-{
-       cancel_delayed_work(&server->nfs_client->cl_renewd);
-}
-
-void
 nfs4_kill_renewd(struct nfs_client *clp)
 {
        cancel_delayed_work_sync(&clp->cl_renewd);