SUNRPC: Avoid holding locks across the XDR encoding of the RPC message (3a03818f) · Commits · 戴 / test

Currently, we grab the socket bit lock before we allow the message to be XDR encoded. That significantly slows down the transmission rate, since we serialise on a potentially blocking operation. Signed-off-by:

Trond Myklebust <trond.myklebust@hammerspace.com>

net/sunrpc/clnt.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -1949,9 +1949,6 @@ call_transmit(struct rpc_task *task)
		task->tk_action = call_status;
		if (task->tk_status < 0)
		return;
		if (!xprt_prepare_transmit(task))
		return;
		task->tk_action = call_transmit_status;
		/* Encode here so that rpcsec_gss can use correct sequence number. */
		if (rpc_task_need_encode(task)) {
		rpc_xdr_encode(task);
		@@ -1965,6 +1962,9 @@ call_transmit(struct rpc_task *task)
		return;
		}
		}
		if (!xprt_prepare_transmit(task))
		return;
		task->tk_action = call_transmit_status;
		xprt_transmit(task);
		if (task->tk_status < 0)
		return;

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