void
nfs4_renew_state(struct work_struct *work)
{
const struct nfs4_state_maintenance_ops *ops;
struct nfs_client *clp =
container_of(work, struct nfs_client, cl_renewd.work);
struct rpc_cred *cred;
long lease;
unsigned long last, now;
unsigned renew_flags = 0;
ops = clp->cl_mvops->state_renewal_ops;
dprintk("%s: start\n", __func__);
if (test_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state))
goto out;
spin_lock(&clp->cl_lock);
lease = clp->cl_lease_time;
last = clp->cl_last_renewal;
now = jiffies;
/* Are we close to a lease timeout? */
if (time_after(now, last + lease/3))
renew_flags |= NFS4_RENEW_TIMEOUT;
if (nfs_delegations_present(clp))
renew_flags |= NFS4_RENEW_DELEGATION_CB;
if (renew_flags != 0) {
cred = ops->get_state_renewal_cred_locked(clp);
spin_unlock(&clp->cl_lock);
if (cred == NULL) {
if (!(renew_flags & NFS4_RENEW_DELEGATION_CB)) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
goto out;
}
nfs_expire_all_delegations(clp);
} else {
/* Queue an asynchronous RENEW. */
ops->sched_state_renewal(clp, cred, renew_flags);
put_rpccred(cred);
goto out_exp;
}
} else {
dprintk("%s: failed to call renewd. Reason: lease not expired \n",
__func__);
spin_unlock(&clp->cl_lock);
}
nfs4_schedule_state_renewal(clp);
out_exp:
nfs_expire_unreferenced_delegations(clp);
out:
dprintk("%s: done\n", __func__);
}
void
nfs4_renew_state(struct work_struct *work)
{
struct nfs4_state_maintenance_ops *ops;
struct nfs_client *clp =
container_of(work, struct nfs_client, cl_renewd.work);
struct rpc_cred *cred;
long lease, timeout;
unsigned long last, now;
ops = nfs4_state_renewal_ops[clp->cl_minorversion];
dprintk("%s: start\n", __func__);
/* Are there any active superblocks? */
if (list_empty(&clp->cl_superblocks))
goto out;
spin_lock(&clp->cl_lock);
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 = ops->get_state_renewal_cred_locked(clp);
spin_unlock(&clp->cl_lock);
if (cred == NULL) {
if (list_empty(&clp->cl_delegations)) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
goto out;
}
nfs_expire_all_delegations(clp);
} else {
/* Queue an asynchronous RENEW. */
ops->sched_state_renewal(clp, cred);
put_rpccred(cred);
}
timeout = (2 * lease) / 3;
spin_lock(&clp->cl_lock);
} 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);
nfs_expire_unreferenced_delegations(clp);
out:
dprintk("%s: done\n", __func__);
}
void
nfs4_renew_state(struct work_struct *work)
{
const struct nfs4_state_maintenance_ops *ops;
struct nfs_client *clp =
container_of(work, struct nfs_client, cl_renewd.work);
struct rpc_cred *cred;
long lease;
unsigned long last, now;
ops = clp->cl_mvops->state_renewal_ops;
dprintk("%s: start\n", __func__);
if (test_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state))
goto out;
spin_lock(&clp->cl_lock);
lease = clp->cl_lease_time;
last = clp->cl_last_renewal;
now = jiffies;
/* Are we close to a lease timeout? */
if (time_after(now, last + lease/3)) {
cred = ops->get_state_renewal_cred_locked(clp);
spin_unlock(&clp->cl_lock);
if (cred == NULL) {
if (list_empty(&clp->cl_delegations)) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
goto out;
}
nfs_expire_all_delegations(clp);
} else {
struct ve_struct *ve;
/* Queue an asynchronous RENEW. */
ve = set_exec_env(clp->cl_rpcclient->cl_xprt->owner_env);
ops->sched_state_renewal(clp, cred);
(void)set_exec_env(ve);
put_rpccred(cred);
goto out_exp;
}
} else {
dprintk("%s: failed to call renewd. Reason: lease not expired \n",
__func__);
spin_unlock(&clp->cl_lock);
}
nfs4_schedule_state_renewal(clp);
out_exp:
nfs_expire_unreferenced_delegations(clp);
out:
dprintk("%s: done\n", __func__);
}
void
nfs4_renew_state(void *data)
{
struct nfs4_client *clp = (struct nfs4_client *)data;
struct rpc_cred *cred;
long lease, timeout;
unsigned long last, now;
down_read(&clp->cl_sem);
dprintk("%s: start\n", __FUNCTION__);
/* Are there any active superblocks? */
if (list_empty(&clp->cl_superblocks))
goto out;
spin_lock(&clp->cl_lock);
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(clp);
if (cred == NULL) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
spin_unlock(&clp->cl_lock);
nfs_expire_all_delegations(clp);
goto out;
}
spin_unlock(&clp->cl_lock);
/* Queue an asynchronous RENEW. */
nfs4_proc_async_renew(clp, cred);
put_rpccred(cred);
timeout = (2 * lease) / 3;
spin_lock(&clp->cl_lock);
} else
dprintk("%s: failed to call renewd. Reason: lease not expired \n",
__FUNCTION__);
if (timeout < 5 * HZ) /* safeguard */
timeout = 5 * HZ;
dprintk("%s: requeueing work. Lease period = %ld\n",
__FUNCTION__, (timeout + HZ - 1) / HZ);
cancel_delayed_work(&clp->cl_renewd);
schedule_delayed_work(&clp->cl_renewd, timeout);
spin_unlock(&clp->cl_lock);
out:
up_read(&clp->cl_sem);
dprintk("%s: done\n", __FUNCTION__);
}