net/9p: don't allow Tflush to be interrupted (a314f274) · Commits · 戴 / test

When a signal is received while sending a Tflush, the client, which has recursed into p9_client_rpc() while sending another request, should wait for Rflush as long as the transport is still up. Signed-off-by:

Jim Garlick <garlick@llnl.gov> Signed-off-by:

Eric Van Hensbergen <ericvh@gmail.com>

net/9p/client.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -740,10 +740,18 @@ p9_client_rpc(struct p9_client c, int8_t type, const char fmt, ...)
		c->status = Disconnected;
		goto reterr;
		}
		again:
		/* Wait for the response */
		err = wait_event_interruptible(*req->wq,
		req->status >= REQ_STATUS_RCVD);

		if ((err == -ERESTARTSYS) && (c->status == Connected)
		&& (type == P9_TFLUSH)) {
		sigpending = 1;
		clear_thread_flag(TIF_SIGPENDING);
		goto again;
		}

		if (req->status == REQ_STATUS_ERROR) {
		p9_debug(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err);
		err = req->t_err;

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