[PATCH 4/4] SUNRPC: Remove the redundant 'zerocopy' argument to xs_sendpages()

[Trond Myklebust <trondmy@xxxxxxxxx>]

Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
 net/sunrpc/xprtsock.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 73586114b825..9fe74d79cdc7 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -760,11 +760,10 @@ static int xs_send_pagedata(struct socket *sock, struct msghdr *msg, struct xdr_
  * @addrlen: UDP only -- length of destination address
  * @xdr: buffer containing this request
  * @base: starting position in the buffer
- * @zerocopy: true if it is safe to use sendpage()
  * @sent_p: return the total number of bytes successfully queued for sending
  *
  */
-static int xs_sendpages(struct socket *sock, struct sockaddr *addr, int addrlen, struct xdr_buf *xdr, unsigned int base, bool zerocopy, int *sent_p)
+static int xs_sendpages(struct socket *sock, struct sockaddr *addr, int addrlen, struct xdr_buf *xdr, unsigned int base, int *sent_p)
 {
 	struct msghdr msg = {
 		.msg_name = addr,
@@ -919,7 +918,7 @@ static int xs_local_send_request(struct rpc_rqst *req)
 	req->rq_xtime = ktime_get();
 	status = xs_sendpages(transport->sock, NULL, 0, xdr,
 			      transport->xmit.offset,
-			      true, &sent);
+			      &sent);
 	dprintk("RPC:       %s(%u) = %d\n",
 			__func__, xdr->len - transport->xmit.offset, status);
 
@@ -986,7 +985,7 @@ static int xs_udp_send_request(struct rpc_rqst *req)
 
 	req->rq_xtime = ktime_get();
 	status = xs_sendpages(transport->sock, xs_addr(xprt), xprt->addrlen,
-			      xdr, 0, true, &sent);
+			      xdr, 0, &sent);
 
 	dprintk("RPC:       xs_udp_send_request(%u) = %d\n",
 			xdr->len, status);
@@ -1050,7 +1049,6 @@ static int xs_tcp_send_request(struct rpc_rqst *req)
 	struct rpc_xprt *xprt = req->rq_xprt;
 	struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
 	struct xdr_buf *xdr = &req->rq_snd_buf;
-	bool zerocopy = true;
 	bool vm_wait = false;
 	int status;
 	int sent;
@@ -1067,12 +1065,6 @@ static int xs_tcp_send_request(struct rpc_rqst *req)
 	xs_pktdump("packet data:",
 				req->rq_svec->iov_base,
 				req->rq_svec->iov_len);
-	/* Don't use zero copy if this is a resend. If the RPC call
-	 * completes while the socket holds a reference to the pages,
-	 * then we may end up resending corrupted data.
-	 */
-	if (req->rq_task->tk_flags & RPC_TASK_SENT)
-		zerocopy = false;
 
 	if (test_bit(XPRT_SOCK_UPD_TIMEOUT, &transport->sock_state))
 		xs_tcp_set_socket_timeouts(xprt, transport->sock);
@@ -1085,7 +1077,7 @@ static int xs_tcp_send_request(struct rpc_rqst *req)
 		sent = 0;
 		status = xs_sendpages(transport->sock, NULL, 0, xdr,
 				      transport->xmit.offset,
-				      zerocopy, &sent);
+				      &sent);
 
 		dprintk("RPC:       xs_tcp_send_request(%u) = %d\n",
 				xdr->len - transport->xmit.offset, status);
-- 
2.20.1