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Commit 1193d58f authored by Trond Myklebust's avatar Trond Myklebust
Browse files

SUNRPC: Backchannel handle socket nospace 



If the socket was busy due to a socket nospace error, then we should
retry the send.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
parent 88de6af2

net/sunrpc/clnt.c

+16 −11
Original line number Diff line number Diff line
@@ -1951,24 +1951,22 @@ call_bc_transmit(struct rpc_task *task) 
{

	struct rpc_rqst *req = task->tk_rqstp;



	if (!xprt_prepare_transmit(task)) {

		/*

		 * Could not reserve the transport. Try again after the

		 * transport is released.

		 */

		task->tk_status = 0;

		task->tk_action = call_bc_transmit;

		return;

	}

	if (!xprt_prepare_transmit(task))

		goto out_retry;



	task->tk_action = rpc_exit_task;

	if (task->tk_status < 0) {

		printk(KERN_NOTICE "RPC: Could not send backchannel reply "

			"error: %d\n", task->tk_status);

		return;

		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;



	xprt_end_transmit(task);

	dprint_status(task);

	switch (task->tk_status) {
@@ -2002,6 +2000,13 @@ call_bc_transmit(struct rpc_task *task) 
		break;

	}

	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;

}

#endif /* CONFIG_SUNRPC_BACKCHANNEL */