diff options
| -rw-r--r-- | net/sunrpc/clnt.c | 61 |
1 files changed, 33 insertions, 28 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 7ab4da342ab5..b9558e10c6c1 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -66,9 +66,6 @@ static void call_decode(struct rpc_task *task); static void call_bind(struct rpc_task *task); static void call_bind_status(struct rpc_task *task); static void call_transmit(struct rpc_task *task); -#if defined(CONFIG_SUNRPC_BACKCHANNEL) -static void call_bc_transmit(struct rpc_task *task); -#endif /* CONFIG_SUNRPC_BACKCHANNEL */ static void call_status(struct rpc_task *task); static void call_transmit_status(struct rpc_task *task); static void call_refresh(struct rpc_task *task); @@ -1133,6 +1130,8 @@ rpc_call_async(struct rpc_clnt *clnt, const struct rpc_message *msg, int flags, EXPORT_SYMBOL_GPL(rpc_call_async); #if defined(CONFIG_SUNRPC_BACKCHANNEL) +static void call_bc_encode(struct rpc_task *task); + /** * rpc_run_bc_task - Allocate a new RPC task for backchannel use, then run * rpc_execute against it @@ -1154,7 +1153,7 @@ struct rpc_task *rpc_run_bc_task(struct rpc_rqst *req) task = rpc_new_task(&task_setup_data); xprt_init_bc_request(req, task); - task->tk_action = call_bc_transmit; + task->tk_action = call_bc_encode; atomic_inc(&task->tk_count); WARN_ON_ONCE(atomic_read(&task->tk_count) != 2); rpc_execute(task); @@ -2085,6 +2084,16 @@ call_transmit_status(struct rpc_task *task) } #if defined(CONFIG_SUNRPC_BACKCHANNEL) +static void call_bc_transmit(struct rpc_task *task); +static void call_bc_transmit_status(struct rpc_task *task); + +static void +call_bc_encode(struct rpc_task *task) +{ + xprt_request_enqueue_transmit(task); + task->tk_action = call_bc_transmit; +} + /* * 5b. Send the backchannel RPC reply. On error, drop the reply. In * addition, disconnect on connectivity errors. @@ -2092,26 +2101,23 @@ call_transmit_status(struct rpc_task *task) static void call_bc_transmit(struct rpc_task *task) { - struct rpc_rqst *req = task->tk_rqstp; - - if (rpc_task_need_encode(task)) - xprt_request_enqueue_transmit(task); - if (!test_bit(RPC_TASK_NEED_XMIT, &task->tk_runstate)) - goto out_wakeup; - - if (!xprt_prepare_transmit(task)) - goto out_retry; - - if (task->tk_status < 0) { - printk(KERN_NOTICE "RPC: Could not send backchannel reply " - "error: %d\n", task->tk_status); - goto out_done; + task->tk_action = call_bc_transmit_status; + if (test_bit(RPC_TASK_NEED_XMIT, &task->tk_runstate)) { + if (!xprt_prepare_transmit(task)) + return; + task->tk_status = 0; + xprt_transmit(task); } + xprt_end_transmit(task); +} - xprt_transmit(task); +static void +call_bc_transmit_status(struct rpc_task *task) +{ + struct rpc_rqst *req = task->tk_rqstp; - xprt_end_transmit(task); dprint_status(task); + switch (task->tk_status) { case 0: /* Success */ @@ -2125,8 +2131,14 @@ call_bc_transmit(struct rpc_task *task) case -ENOTCONN: case -EPIPE: break; + case -ENOBUFS: + rpc_delay(task, HZ>>2); + /* fall through */ + case -EBADSLT: case -EAGAIN: - goto out_retry; + task->tk_status = 0; + task->tk_action = call_bc_transmit; + return; case -ETIMEDOUT: /* * Problem reaching the server. Disconnect and let the @@ -2145,18 +2157,11 @@ call_bc_transmit(struct rpc_task *task) * We were unable to reply and will have to drop the * request. The server should reconnect and retransmit. */ - WARN_ON_ONCE(task->tk_status == -EAGAIN); printk(KERN_NOTICE "RPC: Could not send backchannel reply " "error: %d\n", task->tk_status); break; } -out_wakeup: - rpc_wake_up_queued_task(&req->rq_xprt->pending, task); -out_done: task->tk_action = rpc_exit_task; - return; -out_retry: - task->tk_status = 0; } #endif /* CONFIG_SUNRPC_BACKCHANNEL */ |