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SUNRPC: Fix up the back channel transmit

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Fix up the back channel code to recognise that it has already been
transmitted, so does not need to be called again.
Also ensure that we set req->rq_task.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust
2018-09-01 17:21:01 -04:00
parent 762e4e67b3
commit 902c58872e
3 changed files with 32 additions and 15 deletions
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19
net/sunrpc/clnt.c
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@@ -1138,7 +1138,6 @@ EXPORT_SYMBOL_GPL(rpc_call_async);
struct rpc_task *rpc_run_bc_task(struct rpc_rqst *req)
{
struct rpc_task *task;
struct xdr_buf *xbufp = &req->rq_snd_buf;
struct rpc_task_setup task_setup_data = {
.callback_ops = &rpc_default_ops,
.flags = RPC_TASK_SOFTCONN |
@@ -1150,14 +1149,7 @@ struct rpc_task *rpc_run_bc_task(struct rpc_rqst *req)
* Create an rpc_task to send the data
*/
task = rpc_new_task(&task_setup_data);
task->tk_rqstp = req;
/*
* Set up the xdr_buf length.
* This also indicates that the buffer is XDR encoded already.
*/
xbufp->len = xbufp->head[0].iov_len + xbufp->page_len +
xbufp->tail[0].iov_len;
xprt_init_bc_request(req, task);
task->tk_action = call_bc_transmit;
atomic_inc(&task->tk_count);
@@ -2064,6 +2056,8 @@ call_bc_transmit(struct rpc_task *task)
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;
@@ -2073,13 +2067,11 @@ call_bc_transmit(struct rpc_task *task)
"error: %d\n", task->tk_status);
goto out_done;
}
if (req->rq_connect_cookie != req->rq_xprt->connect_cookie)
req->rq_bytes_sent = 0;
xprt_transmit(task);
if (task->tk_status == -EAGAIN)
goto out_nospace;
goto out_retry;
xprt_end_transmit(task);
dprint_status(task);
@@ -2119,12 +2111,11 @@ call_bc_transmit(struct rpc_task *task)
"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_nospace:
req->rq_connect_cookie = req->rq_xprt->connect_cookie;
out_retry:
task->tk_status = 0;
}