case -NFS4ERR_SEQ_MISORDERED:
dprintk("%s ERROR: %d Reset session\n", __func__,
errorcode);
- set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
+ set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
exception->retry = 1;
- /* FALLTHROUGH */
+ break;
#endif /* !defined(CONFIG_NFS_V4_1) */
case -NFS4ERR_FILE_OPEN:
+ if (exception->timeout > HZ) {
+ /* We have retried a decent amount, time to
+ * fail
+ */
+ ret = -EBUSY;
+ break;
+ }
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
ret = nfs4_delay(server->client, &exception->timeout);
else
tbl->highest_used_slotid = -1;
}
- rpc_wake_up_next(&tbl->slot_tbl_waitq);
spin_unlock(&tbl->slot_tbl_lock);
dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__,
free_slotid, tbl->highest_used_slotid);
}
tbl = &clp->cl_session->fc_slot_table;
if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) {
- dprintk("%s: No slot\n", __func__);
/* just wake up the next guy waiting since
* we may have not consumed a slot after all */
+ dprintk("%s: No slot\n", __func__);
+ } else {
+ nfs4_free_slot(tbl, res->sr_slotid);
+ res->sr_slotid = NFS4_MAX_SLOT_TABLE;
+ }
+
+ /* Signal state manager thread if session is drained */
+ if (test_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state)) {
+ spin_lock(&tbl->slot_tbl_lock);
+ if (tbl->highest_used_slotid == -1) {
+ dprintk("%s COMPLETE: Session Drained\n", __func__);
+ complete(&clp->cl_session->complete);
+ }
+ spin_unlock(&tbl->slot_tbl_lock);
+ } else {
rpc_wake_up_next(&tbl->slot_tbl_waitq);
- return;
}
- nfs4_free_slot(tbl, res->sr_slotid);
- res->sr_slotid = NFS4_MAX_SLOT_TABLE;
}
static void nfs41_sequence_done(struct nfs_client *clp,
if (res->sr_slotid == NFS4_MAX_SLOT_TABLE)
goto out;
- tbl = &clp->cl_session->fc_slot_table;
- slot = tbl->slots + res->sr_slotid;
-
+ /* Check the SEQUENCE operation status */
if (res->sr_status == 0) {
+ tbl = &clp->cl_session->fc_slot_table;
+ slot = tbl->slots + res->sr_slotid;
/* Update the slot's sequence and clientid lease timer */
++slot->seq_nr;
timestamp = res->sr_renewal_time;
return ret_id;
}
-static int nfs4_recover_session(struct nfs4_session *session)
-{
- struct nfs_client *clp = session->clp;
- unsigned int loop;
- int ret;
-
- for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
- ret = nfs4_wait_clnt_recover(clp);
- if (ret != 0)
- break;
- if (!test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state))
- break;
- nfs4_schedule_state_manager(clp);
- ret = -EIO;
- }
- return ret;
-}
-
static int nfs41_setup_sequence(struct nfs4_session *session,
struct nfs4_sequence_args *args,
struct nfs4_sequence_res *res,
{
struct nfs4_slot *slot;
struct nfs4_slot_table *tbl;
- int status = 0;
u8 slotid;
dprintk("--> %s\n", __func__);
tbl = &session->fc_slot_table;
spin_lock(&tbl->slot_tbl_lock);
- if (test_bit(NFS4CLNT_SESSION_SETUP, &session->clp->cl_state)) {
- if (tbl->highest_used_slotid != -1) {
- rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
- spin_unlock(&tbl->slot_tbl_lock);
- dprintk("<-- %s: Session reset: draining\n", __func__);
- return -EAGAIN;
- }
-
- /* The slot table is empty; start the reset thread */
- dprintk("%s Session Reset\n", __func__);
+ if (test_bit(NFS4CLNT_SESSION_RESET, &session->clp->cl_state)) {
+ /*
+ * The state manager will wait until the slot table is empty.
+ * Schedule the reset thread
+ */
+ dprintk("%s Schedule Session Reset\n", __func__);
+ rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
+ nfs4_schedule_state_manager(session->clp);
spin_unlock(&tbl->slot_tbl_lock);
- status = nfs4_recover_session(session);
- if (status)
- return status;
- spin_lock(&tbl->slot_tbl_lock);
+ return -EAGAIN;
}
slotid = nfs4_find_slot(tbl, task);
goto out;
ret = nfs41_setup_sequence(clp->cl_session, args, res, cache_reply,
task);
- if (ret != -EAGAIN) {
+ if (ret && ret != -EAGAIN) {
/* terminate rpc task */
task->tk_status = ret;
task->tk_action = NULL;
#endif /* CONFIG_NFS_V4_1 */
}
+void nfs4_restart_rpc(struct rpc_task *task, const struct nfs_client *clp,
+ struct nfs4_sequence_res *res)
+{
+#ifdef CONFIG_NFS_V4_1
+ if (nfs4_has_session(clp)) {
+ nfs41_sequence_free_slot(clp, res);
+ rpc_restart_call_prepare(task);
+ return;
+ }
+#endif /* CONFIG_NFS_V4_1 */
+ rpc_restart_call(task);
+}
+
/* no restart, therefore free slot here */
static void nfs4_sequence_done_free_slot(const struct nfs_server *server,
struct nfs4_sequence_res *res,
return ret;
}
-static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
+static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_exception exception = { };
do {
err = _nfs4_open_expired(ctx, state);
- if (err != -NFS4ERR_DELAY)
- break;
- nfs4_handle_exception(server, err, &exception);
+ switch (err) {
+ default:
+ goto out;
+ case -NFS4ERR_GRACE:
+ case -NFS4ERR_DELAY:
+ nfs4_handle_exception(server, err, &exception);
+ err = 0;
+ }
} while (exception.retry);
+out:
return err;
}
break;
default:
if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
- nfs4_restart_rpc(task, server->nfs_client);
+ nfs4_restart_rpc(task, server->nfs_client,
+ &calldata->res.seq_res);
return;
}
}
return 0;
}
-void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
+static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
{
if (ctx->state == NULL)
return;
nfs4_sequence_done(server, &data->res.seq_res, task->tk_status);
if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
- nfs4_restart_rpc(task, server->nfs_client);
+ nfs4_restart_rpc(task, server->nfs_client, &data->res.seq_res);
return -EAGAIN;
}
nfs_invalidate_atime(data->inode);
if (task->tk_status > 0)
renew_lease(server, data->timestamp);
+ else if (task->tk_status < 0)
+ nfs4_sequence_free_slot(server->nfs_client, &data->res.seq_res);
+
return 0;
}
task->tk_status);
if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
- nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
+ nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client,
+ &data->res.seq_res);
return -EAGAIN;
}
if (task->tk_status >= 0) {
nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res,
task->tk_status);
if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
- nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
+ nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client,
+ &data->res.seq_res);
return -EAGAIN;
}
nfs4_sequence_free_slot(NFS_SERVER(inode)->nfs_client,
case -NFS4ERR_SEQ_MISORDERED:
dprintk("%s ERROR %d, Reset session\n", __func__,
task->tk_status);
- set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
+ set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
task->tk_status = 0;
return -EAGAIN;
#endif /* CONFIG_NFS_V4_1 */
default:
if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
nfs4_restart_rpc(task,
- calldata->server->nfs_client);
+ calldata->server->nfs_client,
+ &calldata->res.seq_res);
}
nfs4_sequence_free_slot(calldata->server->nfs_client,
&calldata->res.seq_res);
if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, 0);
- if (err != -NFS4ERR_DELAY)
- break;
- nfs4_handle_exception(server, err, &exception);
+ switch (err) {
+ default:
+ goto out;
+ case -NFS4ERR_GRACE:
+ case -NFS4ERR_DELAY:
+ nfs4_handle_exception(server, err, &exception);
+ err = 0;
+ }
} while (exception.retry);
+out:
return err;
}
* NFS4ERR_BADSESSION in the sequence operation, and will therefore
* be in some phase of session reset.
*/
-static int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
+int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
{
nfs4_verifier verifier;
struct nfs41_exchange_id_args args = {
dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
rpc_delay(task, NFS4_POLL_RETRY_MIN);
task->tk_status = 0;
- nfs4_restart_rpc(task, data->clp);
+ rpc_restart_call(task);
return;
}
nfs41_sequence_free_slot(data->clp, &data->res->lr_seq_res);
1);
if (status)
return status;
+ init_completion(&session->complete);
status = nfs4_reset_slot_table(&session->bc_slot_table,
session->bc_attrs.max_reqs,
if (!session)
return NULL;
- set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state);
/*
* The create session reply races with the server back
* channel probe. Mark the client NFS_CS_SESSION_INITING
* nfs_client struct
*/
clp->cl_cons_state = NFS_CS_SESSION_INITING;
+ init_completion(&session->complete);
tbl = &session->fc_slot_table;
spin_lock_init(&tbl->slot_tbl_lock);
if (_nfs4_async_handle_error(task, NULL, clp, NULL)
== -EAGAIN) {
- nfs4_restart_rpc(task, clp);
+ nfs4_restart_rpc(task, clp, task->tk_msg.rpc_resp);
return;
}
}
.state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
.recover_open = nfs4_open_reclaim,
.recover_lock = nfs4_lock_reclaim,
- .establish_clid = nfs4_proc_exchange_id,
+ .establish_clid = nfs41_init_clientid,
.get_clid_cred = nfs4_get_exchange_id_cred,
};
#endif /* CONFIG_NFS_V4_1 */
.state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
.recover_open = nfs4_open_expired,
.recover_lock = nfs4_lock_expired,
- .establish_clid = nfs4_proc_exchange_id,
+ .establish_clid = nfs41_init_clientid,
.get_clid_cred = nfs4_get_exchange_id_cred,
};
#endif /* CONFIG_NFS_V4_1 */
projects / mv-sheeva.git / blobdiff