+ spin_unlock(&sp->so_lock);
+ }
+
+ nfs_delegation_reap_unclaimed(clp);
+}
+
+static void nfs_delegation_clear_all(struct nfs_client *clp)
+{
+ nfs_delegation_mark_reclaim(clp);
+ nfs_delegation_reap_unclaimed(clp);
+}
+
+static void nfs4_state_start_reclaim_nograce(struct nfs_client *clp)
+{
+ nfs_delegation_clear_all(clp);
+ nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce);
+}
+
+static void nfs4_state_end_reclaim_nograce(struct nfs_client *clp)
+{
+ clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state);
+}
+
+static void nfs4_recovery_handle_error(struct nfs_client *clp, int error)
+{
+ switch (error) {
+ case -NFS4ERR_CB_PATH_DOWN:
+ nfs_handle_cb_pathdown(clp);
+ break;
+ case -NFS4ERR_STALE_CLIENTID:
+ case -NFS4ERR_LEASE_MOVED:
+ set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
+ nfs4_state_start_reclaim_reboot(clp);
+ break;
+ case -NFS4ERR_EXPIRED:
+ set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
+ nfs4_state_start_reclaim_nograce(clp);
+ case -NFS4ERR_BADSESSION:
+ case -NFS4ERR_BADSLOT:
+ case -NFS4ERR_BAD_HIGH_SLOT:
+ case -NFS4ERR_DEADSESSION:
+ case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
+ case -NFS4ERR_SEQ_FALSE_RETRY:
+ case -NFS4ERR_SEQ_MISORDERED:
+ set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
+ }
+}
+
+static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recovery_ops *ops)
+{
+ struct rb_node *pos;
+ int status = 0;
+
+restart:
+ spin_lock(&clp->cl_lock);
+ for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
+ struct nfs4_state_owner *sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
+ if (!test_and_clear_bit(ops->owner_flag_bit, &sp->so_flags))
+ continue;
+ atomic_inc(&sp->so_count);
+ spin_unlock(&clp->cl_lock);
+ status = nfs4_reclaim_open_state(sp, ops);
+ if (status < 0) {
+ set_bit(ops->owner_flag_bit, &sp->so_flags);
+ nfs4_put_state_owner(sp);
+ nfs4_recovery_handle_error(clp, status);
+ return status;
+ }
+ nfs4_put_state_owner(sp);
+ goto restart;
+ }
+ spin_unlock(&clp->cl_lock);
+ return status;
+}
+
+static int nfs4_check_lease(struct nfs_client *clp)
+{
+ struct rpc_cred *cred;
+ struct nfs4_state_maintenance_ops *ops =
+ nfs4_state_renewal_ops[clp->cl_minorversion];
+ int status = -NFS4ERR_EXPIRED;
+
+ /* Is the client already known to have an expired lease? */
+ if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
+ return 0;
+ spin_lock(&clp->cl_lock);
+ cred = ops->get_state_renewal_cred_locked(clp);
+ spin_unlock(&clp->cl_lock);
+ if (cred == NULL) {