sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)

Remove ->sendpage() and ->sendpage_locked().  sendmsg() with
MSG_SPLICE_PAGES should be used instead.  This allows multiple pages and
multipage folios to be passed through.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for net/can
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-afs@lists.infradead.org
cc: mptcp@lists.linux.dev
cc: rds-devel@oss.oracle.com
cc: tipc-discussion@lists.sourceforge.net
cc: virtualization@lists.linux-foundation.org
Link: https://lore.kernel.org/r/20230623225513.2732256-16-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

49 files changed, 8 insertions, 330 deletions

diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index a06f4d4a6f47..8978fb6212ff 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1929,7 +1929,6 @@ static const struct proto_ops atalk_dgram_ops = {
 	.sendmsg	= atalk_sendmsg,
 	.recvmsg	= atalk_recvmsg,
 	.mmap		= sock_no_mmap,
-	.sendpage	= sock_no_sendpage,
 };
 
 static struct notifier_block ddp_notifier = {
diff --git a/net/atm/pvc.c b/net/atm/pvc.c
index 53e7d3f39e26..66d9a9bd5896 100644
--- a/net/atm/pvc.c
+++ b/net/atm/pvc.c
@@ -126,7 +126,6 @@ static const struct proto_ops pvc_proto_ops = {
 	.sendmsg =	vcc_sendmsg,
 	.recvmsg =	vcc_recvmsg,
 	.mmap =		sock_no_mmap,
-	.sendpage =	sock_no_sendpage,
 };
 
 
diff --git a/net/atm/svc.c b/net/atm/svc.c
index d83556d8beb9..36a814f1fbd1 100644
--- a/net/atm/svc.c
+++ b/net/atm/svc.c
@@ -654,7 +654,6 @@ static const struct proto_ops svc_proto_ops = {
 	.sendmsg =	vcc_sendmsg,
 	.recvmsg =	vcc_recvmsg,
 	.mmap =		sock_no_mmap,
-	.sendpage =	sock_no_sendpage,
 };
 
 
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index d8da400cb4de..5db805d5f74d 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -2022,7 +2022,6 @@ static const struct proto_ops ax25_proto_ops = {
 	.sendmsg	= ax25_sendmsg,
 	.recvmsg	= ax25_recvmsg,
 	.mmap		= sock_no_mmap,
-	.sendpage	= sock_no_sendpage,
 };
 
 /*
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
index 4eebcc66c19a..9c82698da4f5 100644
--- a/net/caif/caif_socket.c
+++ b/net/caif/caif_socket.c
@@ -976,7 +976,6 @@ static const struct proto_ops caif_seqpacket_ops = {
 	.sendmsg = caif_seqpkt_sendmsg,
 	.recvmsg = caif_seqpkt_recvmsg,
 	.mmap = sock_no_mmap,
-	.sendpage = sock_no_sendpage,
 };
 
 static const struct proto_ops caif_stream_ops = {
@@ -996,7 +995,6 @@ static const struct proto_ops caif_stream_ops = {
 	.sendmsg = caif_stream_sendmsg,
 	.recvmsg = caif_stream_recvmsg,
 	.mmap = sock_no_mmap,
-	.sendpage = sock_no_sendpage,
 };
 
 /* This function is called when a socket is finally destroyed. */
diff --git a/net/can/bcm.c b/net/can/bcm.c
index a962ec2b8ba5..9ba35685b043 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1703,7 +1703,6 @@ static const struct proto_ops bcm_ops = {
 	.sendmsg       = bcm_sendmsg,
 	.recvmsg       = bcm_recvmsg,
 	.mmap          = sock_no_mmap,
-	.sendpage      = sock_no_sendpage,
 };
 
 static struct proto bcm_proto __read_mostly = {
diff --git a/net/can/isotp.c b/net/can/isotp.c
index 84f9aba02901..1f25b45868cf 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -1699,7 +1699,6 @@ static const struct proto_ops isotp_ops = {
 	.sendmsg = isotp_sendmsg,
 	.recvmsg = isotp_recvmsg,
 	.mmap = sock_no_mmap,
-	.sendpage = sock_no_sendpage,
 };
 
 static struct proto isotp_proto __read_mostly = {
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index 35970c25496a..feaec4ad6d16 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -1306,7 +1306,6 @@ static const struct proto_ops j1939_ops = {
 	.sendmsg = j1939_sk_sendmsg,
 	.recvmsg = j1939_sk_recvmsg,
 	.mmap = sock_no_mmap,
-	.sendpage = sock_no_sendpage,
 };
 
 static struct proto j1939_proto __read_mostly = {
diff --git a/net/can/raw.c b/net/can/raw.c
index f64469b98260..15c79b079184 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -962,7 +962,6 @@ static const struct proto_ops raw_ops = {
 	.sendmsg       = raw_sendmsg,
 	.recvmsg       = raw_recvmsg,
 	.mmap          = sock_no_mmap,
-	.sendpage      = sock_no_sendpage,
 };
 
 static struct proto raw_proto __read_mostly = {
diff --git a/net/core/sock.c b/net/core/sock.c
index 5f1747c12004..de719094b804 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -3261,36 +3261,6 @@ void __receive_sock(struct file *file)
 	}
 }
 
-ssize_t sock_no_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags)
-{
-	ssize_t res;
-	struct msghdr msg = {.msg_flags = flags};
-	struct kvec iov;
-	char *kaddr = kmap(page);
-	iov.iov_base = kaddr + offset;
-	iov.iov_len = size;
-	res = kernel_sendmsg(sock, &msg, &iov, 1, size);
-	kunmap(page);
-	return res;
-}
-EXPORT_SYMBOL(sock_no_sendpage);
-
-ssize_t sock_no_sendpage_locked(struct sock *sk, struct page *page,
-				int offset, size_t size, int flags)
-{
-	ssize_t res;
-	struct msghdr msg = {.msg_flags = flags};
-	struct kvec iov;
-	char *kaddr = kmap(page);
-
-	iov.iov_base = kaddr + offset;
-	iov.iov_len = size;
-	res = kernel_sendmsg_locked(sk, &msg, &iov, 1, size);
-	kunmap(page);
-	return res;
-}
-EXPORT_SYMBOL(sock_no_sendpage_locked);
-
 /*
  *	Default Socket Callbacks
  */
@@ -4046,7 +4016,7 @@ static void proto_seq_printf(struct seq_file *seq, struct proto *proto)
 {
 
 	seq_printf(seq, "%-9s %4u %6d  %6ld   %-3s %6u   %-3s  %-10s "
-			"%2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c\n",
+			"%2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c %2c\n",
 		   proto->name,
 		   proto->obj_size,
 		   sock_prot_inuse_get(seq_file_net(seq), proto),
@@ -4067,7 +4037,6 @@ static void proto_seq_printf(struct seq_file *seq, struct proto *proto)
 		   proto_method_implemented(proto->getsockopt),
 		   proto_method_implemented(proto->sendmsg),
 		   proto_method_implemented(proto->recvmsg),
-		   proto_method_implemented(proto->sendpage),
 		   proto_method_implemented(proto->bind),
 		   proto_method_implemented(proto->backlog_rcv),
 		   proto_method_implemented(proto->hash),
@@ -4088,7 +4057,7 @@ static int proto_seq_show(struct seq_file *seq, void *v)
 			   "maxhdr",
 			   "slab",
 			   "module",
-			   "cl co di ac io in de sh ss gs se re sp bi br ha uh gp em\n");
+			   "cl co di ac io in de sh ss gs se re bi br ha uh gp em\n");
 	else
 		proto_seq_printf(seq, list_entry(v, struct proto, node));
 	return 0;
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 3ab68415d121..fa8079303cb0 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -1010,7 +1010,6 @@ static const struct proto_ops inet_dccp_ops = {
 	.sendmsg	   = inet_sendmsg,
 	.recvmsg	   = sock_common_recvmsg,
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = sock_no_sendpage,
 };
 
 static struct inet_protosw dccp_v4_protosw = {
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 93c98990d726..7249ef218178 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -1087,7 +1087,6 @@ static const struct proto_ops inet6_dccp_ops = {
 	.sendmsg	   = inet_sendmsg,
 	.recvmsg	   = sock_common_recvmsg,
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = sock_no_sendpage,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	   = inet6_compat_ioctl,
 #endif
diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index 9c124705120d..00302e8b9615 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -426,7 +426,6 @@ static const struct proto_ops ieee802154_raw_ops = {
 	.sendmsg	   = ieee802154_sock_sendmsg,
 	.recvmsg	   = sock_common_recvmsg,
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = sock_no_sendpage,
 };
 
 /* DGRAM Sockets (802.15.4 dataframes) */
@@ -989,7 +988,6 @@ static const struct proto_ops ieee802154_dgram_ops = {
 	.sendmsg	   = ieee802154_sock_sendmsg,
 	.recvmsg	   = sock_common_recvmsg,
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = sock_no_sendpage,
 };
 
 static void ieee802154_sock_destruct(struct sock *sk)
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 38e649fb4474..9b2ca2fcc5a1 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -847,23 +847,6 @@ void inet_splice_eof(struct socket *sock)
 }
 EXPORT_SYMBOL_GPL(inet_splice_eof);
 
-ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset,
-		      size_t size, int flags)
-{
-	struct sock *sk = sock->sk;
-	const struct proto *prot;
-
-	if (unlikely(inet_send_prepare(sk)))
-		return -EAGAIN;
-
-	/* IPV6_ADDRFORM can change sk->sk_prot under us. */
-	prot = READ_ONCE(sk->sk_prot);
-	if (prot->sendpage)
-		return prot->sendpage(sk, page, offset, size, flags);
-	return sock_no_sendpage(sock, page, offset, size, flags);
-}
-EXPORT_SYMBOL(inet_sendpage);
-
 INDIRECT_CALLABLE_DECLARE(int udp_recvmsg(struct sock *, struct msghdr *,
 					  size_t, int, int *));
 int inet_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
@@ -1067,12 +1050,10 @@ const struct proto_ops inet_stream_ops = {
 	.mmap		   = tcp_mmap,
 #endif
 	.splice_eof	   = inet_splice_eof,
-	.sendpage	   = inet_sendpage,
 	.splice_read	   = tcp_splice_read,
 	.read_sock	   = tcp_read_sock,
 	.read_skb	   = tcp_read_skb,
 	.sendmsg_locked    = tcp_sendmsg_locked,
-	.sendpage_locked   = tcp_sendpage_locked,
 	.peek_len	   = tcp_peek_len,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	   = inet_compat_ioctl,
@@ -1102,7 +1083,6 @@ const struct proto_ops inet_dgram_ops = {
 	.recvmsg	   = inet_recvmsg,
 	.mmap		   = sock_no_mmap,
 	.splice_eof	   = inet_splice_eof,
-	.sendpage	   = inet_sendpage,
 	.set_peek_off	   = sk_set_peek_off,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	   = inet_compat_ioctl,
@@ -1134,7 +1114,6 @@ static const struct proto_ops inet_sockraw_ops = {
 	.recvmsg	   = inet_recvmsg,
 	.mmap		   = sock_no_mmap,
 	.splice_eof	   = inet_splice_eof,
-	.sendpage	   = inet_sendpage,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	   = inet_compat_ioctl,
 #endif
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index d56edc2c885f..e03e08745308 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -923,11 +923,10 @@ int tcp_send_mss(struct sock *sk, int *size_goal, int flags)
 	return mss_now;
 }
 
-/* In some cases, both sendpage() and sendmsg() could have added
- * an skb to the write queue, but failed adding payload on it.
- * We need to remove it to consume less memory, but more
- * importantly be able to generate EPOLLOUT for Edge Trigger epoll()
- * users.
+/* In some cases, both sendmsg() could have added an skb to the write queue,
+ * but failed adding payload on it.  We need to remove it to consume less
+ * memory, but more importantly be able to generate EPOLLOUT for Edge Trigger
+ * epoll() users.
  */
 void tcp_remove_empty_skb(struct sock *sk)
 {
@@ -975,40 +974,6 @@ int tcp_wmem_schedule(struct sock *sk, int copy)
 	return min(copy, sk->sk_forward_alloc);
 }
 
-int tcp_sendpage_locked(struct sock *sk, struct page *page, int offset,
-			size_t size, int flags)
-{
-	struct bio_vec bvec;
-	struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES, };
-
-	if (!(sk->sk_route_caps & NETIF_F_SG))
-		return sock_no_sendpage_locked(sk, page, offset, size, flags);
-
-	tcp_rate_check_app_limited(sk);  /* is sending application-limited? */
-
-	bvec_set_page(&bvec, page, size, offset);
-	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);
-
-	if (flags & MSG_SENDPAGE_NOTLAST)
-		msg.msg_flags |= MSG_MORE;
-
-	return tcp_sendmsg_locked(sk, &msg, size);
-}
-EXPORT_SYMBOL_GPL(tcp_sendpage_locked);
-
-int tcp_sendpage(struct sock *sk, struct page *page, int offset,
-		 size_t size, int flags)
-{
-	int ret;
-
-	lock_sock(sk);
-	ret = tcp_sendpage_locked(sk, page, offset, size, flags);
-	release_sock(sk);
-
-	return ret;
-}
-EXPORT_SYMBOL(tcp_sendpage);
-
 void tcp_free_fastopen_req(struct tcp_sock *tp)
 {
 	if (tp->fastopen_req) {
diff --git a/net/ipv4/tcp_bpf.c b/net/ipv4/tcp_bpf.c
index 31d6005cea9b..81f0dff69e0b 100644
--- a/net/ipv4/tcp_bpf.c
+++ b/net/ipv4/tcp_bpf.c
@@ -486,7 +486,7 @@ static int tcp_bpf_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 	long timeo;
 	int flags;
 
-	/* Don't let internal sendpage flags through */
+	/* Don't let internal flags through */
 	flags = (msg->msg_flags & ~MSG_SENDPAGE_DECRYPTED);
 	flags |= MSG_NO_SHARED_FRAGS;
 
@@ -566,23 +566,6 @@ out_err:
 	return copied ? copied : err;
 }
 
-static int tcp_bpf_sendpage(struct sock *sk, struct page *page, int offset,
-			    size_t size, int flags)
-{
-	struct bio_vec bvec;
-	struct msghdr msg = {
-		.msg_flags = flags | MSG_SPLICE_PAGES,
-	};
-
-	bvec_set_page(&bvec, page, size, offset);
-	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);
-
-	if (flags & MSG_SENDPAGE_NOTLAST)
-		msg.msg_flags |= MSG_MORE;
-
-	return tcp_bpf_sendmsg(sk, &msg, size);
-}
-
 enum {
 	TCP_BPF_IPV4,
 	TCP_BPF_IPV6,
@@ -612,7 +595,6 @@ static void tcp_bpf_rebuild_protos(struct proto prot[TCP_BPF_NUM_CFGS],
 
 	prot[TCP_BPF_TX]			= prot[TCP_BPF_BASE];
 	prot[TCP_BPF_TX].sendmsg		= tcp_bpf_sendmsg;
-	prot[TCP_BPF_TX].sendpage		= tcp_bpf_sendpage;
 
 	prot[TCP_BPF_RX]			= prot[TCP_BPF_BASE];
 	prot[TCP_BPF_RX].recvmsg		= tcp_bpf_recvmsg_parser;
@@ -647,8 +629,7 @@ static int tcp_bpf_assert_proto_ops(struct proto *ops)
 	 * indeed valid assumptions.
 	 */
 	return ops->recvmsg  == tcp_recvmsg &&
-	       ops->sendmsg  == tcp_sendmsg &&
-	       ops->sendpage == tcp_sendpage ? 0 : -ENOTSUPP;
+	       ops->sendmsg  == tcp_sendmsg ? 0 : -ENOTSUPP;
 }
 
 int tcp_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool restore)
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 9213804b034f..fd365de4d5ff 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -3117,7 +3117,6 @@ struct proto tcp_prot = {
 	.recvmsg		= tcp_recvmsg,
 	.sendmsg		= tcp_sendmsg,
 	.splice_eof		= tcp_splice_eof,
-	.sendpage		= tcp_sendpage,
 	.backlog_rcv		= tcp_v4_do_rcv,
 	.release_cb		= tcp_release_cb,
 	.hash			= inet_hash,
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 48fdcd3cad9c..42a96b3547c9 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1340,20 +1340,6 @@ void udp_splice_eof(struct socket *sock)
 }
 EXPORT_SYMBOL_GPL(udp_splice_eof);
 
-int udp_sendpage(struct sock *sk, struct page *page, int offset,
-		 size_t size, int flags)
-{
-	struct bio_vec bvec;
-	struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES };
-
-	if (flags & MSG_SENDPAGE_NOTLAST)
-		msg.msg_flags |= MSG_MORE;
-
-	bvec_set_page(&bvec, page, size, offset);
-	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);
-	return udp_sendmsg(sk, &msg, size);
-}
-
 #define UDP_SKB_IS_STATELESS 0x80000000
 
 /* all head states (dst, sk, nf conntrack) except skb extensions are
@@ -2933,7 +2919,6 @@ struct proto udp_prot = {
 	.sendmsg		= udp_sendmsg,
 	.recvmsg		= udp_recvmsg,
 	.splice_eof		= udp_splice_eof,
-	.sendpage		= udp_sendpage,
 	.release_cb		= ip4_datagram_release_cb,
 	.hash			= udp_lib_hash,
 	.unhash			= udp_lib_unhash,
diff --git a/net/ipv4/udp_impl.h b/net/ipv4/udp_impl.h
index 4ba7a88a1b1d..e1ff3a375996 100644
--- a/net/ipv4/udp_impl.h
+++ b/net/ipv4/udp_impl.h
@@ -19,8 +19,6 @@ int udp_getsockopt(struct sock *sk, int level, int optname,
 
 int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int flags,
 		int *addr_len);
-int udp_sendpage(struct sock *sk, struct page *page, int offset, size_t size,
-		 int flags);
 void udp_destroy_sock(struct sock *sk);
 
 #ifdef CONFIG_PROC_FS
diff --git a/net/ipv4/udplite.c b/net/ipv4/udplite.c
index 143f93a12f25..39ecdad1b50c 100644
--- a/net/ipv4/udplite.c
+++ b/net/ipv4/udplite.c
@@ -56,7 +56,6 @@ struct proto 	udplite_prot = {
 	.getsockopt	   = udp_getsockopt,
 	.sendmsg	   = udp_sendmsg,
 	.recvmsg	   = udp_recvmsg,
-	.sendpage	   = udp_sendpage,
 	.hash		   = udp_lib_hash,
 	.unhash		   = udp_lib_unhash,
 	.rehash		   = udp_v4_rehash,
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index b3451cf47d29..5d593ddc0347 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -696,9 +696,7 @@ const struct proto_ops inet6_stream_ops = {
 	.mmap		   = tcp_mmap,
 #endif
 	.splice_eof	   = inet_splice_eof,
-	.sendpage	   = inet_sendpage,
 	.sendmsg_locked    = tcp_sendmsg_locked,
-	.sendpage_locked   = tcp_sendpage_locked,
 	.splice_read	   = tcp_splice_read,
 	.read_sock	   = tcp_read_sock,
 	.read_skb	   = tcp_read_skb,
@@ -729,7 +727,6 @@ const struct proto_ops inet6_dgram_ops = {
 	.recvmsg	   = inet6_recvmsg,		/* retpoline's sake */
 	.read_skb	   = udp_read_skb,
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = sock_no_sendpage,
 	.set_peek_off	   = sk_set_peek_off,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	   = inet6_compat_ioctl,
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index c9caeb5a43ed..ac1cef094c5f 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1296,7 +1296,6 @@ const struct proto_ops inet6_sockraw_ops = {
 	.sendmsg	   = inet_sendmsg,		/* ok		*/
 	.recvmsg	   = sock_common_recvmsg,	/* ok		*/
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = sock_no_sendpage,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	   = inet6_compat_ioctl,
 #endif
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index c17c8ff94b79..40dd92a2f480 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -2151,7 +2151,6 @@ struct proto tcpv6_prot = {
 	.recvmsg		= tcp_recvmsg,
 	.sendmsg		= tcp_sendmsg,
 	.splice_eof		= tcp_splice_eof,
-	.sendpage		= tcp_sendpage,
 	.backlog_rcv		= tcp_v6_do_rcv,
 	.release_cb		= tcp_release_cb,
 	.hash			= inet6_hash,
diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c
index d0537c1c8cd7..393f01b2a7e6 100644
--- a/net/kcm/kcmsock.c
+++ b/net/kcm/kcmsock.c
@@ -963,24 +963,6 @@ static void kcm_splice_eof(struct socket *sock)
 	release_sock(sk);
 }
 
-static ssize_t kcm_sendpage(struct socket *sock, struct page *page,
-			    int offset, size_t size, int flags)
-
-{
-	struct bio_vec bvec;
-	struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES, };
-
-	if (flags & MSG_SENDPAGE_NOTLAST)
-		msg.msg_flags |= MSG_MORE;
-
-	if (flags & MSG_OOB)
-		return -EOPNOTSUPP;
-
-	bvec_set_page(&bvec, page, size, offset);
-	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);
-	return kcm_sendmsg(sock, &msg, size);
-}
-
 static int kcm_recvmsg(struct socket *sock, struct msghdr *msg,
 		       size_t len, int flags)
 {
@@ -1769,7 +1751,6 @@ static const struct proto_ops kcm_dgram_ops = {
 	.recvmsg =	kcm_recvmsg,
 	.mmap =		sock_no_mmap,
 	.splice_eof =	kcm_splice_eof,
-	.sendpage =	kcm_sendpage,
 };
 
 static const struct proto_ops kcm_seqpacket_ops = {
@@ -1791,7 +1772,6 @@ static const struct proto_ops kcm_seqpacket_ops = {
 	.recvmsg =	kcm_recvmsg,
 	.mmap =		sock_no_mmap,
 	.splice_eof =	kcm_splice_eof,
-	.sendpage =	kcm_sendpage,
 	.splice_read =	kcm_splice_read,
 };
 
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 31ab12fd720a..ede3c6a60353 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -3761,7 +3761,6 @@ static const struct proto_ops pfkey_ops = {
 	.listen		=	sock_no_listen,
 	.shutdown	=	sock_no_shutdown,
 	.mmap		=	sock_no_mmap,
-	.sendpage	=	sock_no_sendpage,
 
 	/* Now the operations that really occur. */
 	.release	=	pfkey_release,
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 2b795c1064f5..f9073bc7281f 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -624,7 +624,6 @@ static const struct proto_ops l2tp_ip_ops = {
 	.sendmsg	   = inet_sendmsg,
 	.recvmsg	   = sock_common_recvmsg,
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = sock_no_sendpage,
 };
 
 static struct inet_protosw l2tp_ip_protosw = {
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
index 5137ea1861ce..b1623f9c4f92 100644
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@@ -751,7 +751,6 @@ static const struct proto_ops l2tp_ip6_ops = {
 	.sendmsg	   = inet_sendmsg,
 	.recvmsg	   = sock_common_recvmsg,
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = sock_no_sendpage,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	   = inet6_compat_ioctl,
 #endif
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index 9ffbc667be6c..57c35c960b2c 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -1232,7 +1232,6 @@ static const struct proto_ops llc_ui_ops = {
 	.sendmsg     = llc_ui_sendmsg,
 	.recvmsg     = llc_ui_recvmsg,
 	.mmap	     = sock_no_mmap,
-	.sendpage    = sock_no_sendpage,
 };
 
 static const char llc_proc_err_msg[] __initconst =
diff --git a/net/mctp/af_mctp.c b/net/mctp/af_mctp.c
index bb4bd0b6a4f7..f6be58b68c6f 100644
--- a/net/mctp/af_mctp.c
+++ b/net/mctp/af_mctp.c
@@ -485,7 +485,6 @@ static const struct proto_ops mctp_dgram_ops = {
 	.sendmsg	= mctp_sendmsg,
 	.recvmsg	= mctp_recvmsg,
 	.mmap		= sock_no_mmap,
-	.sendpage	= sock_no_sendpage,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= mctp_compat_ioctl,
 #endif
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index bd023debedc8..e892673deb73 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -3866,7 +3866,6 @@ static const struct proto_ops mptcp_stream_ops = {
 	.sendmsg	   = inet_sendmsg,
 	.recvmsg	   = inet_recvmsg,
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = inet_sendpage,
 };
 
 static struct inet_protosw mptcp_protosw = {
@@ -3961,7 +3960,6 @@ static const struct proto_ops mptcp_v6_stream_ops = {
 	.sendmsg	   = inet6_sendmsg,
 	.recvmsg	   = inet6_recvmsg,
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = inet_sendpage,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	   = inet6_compat_ioctl,
 #endif
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index cbd9aa7ee24a..39cfb778ebc5 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2815,7 +2815,6 @@ static const struct proto_ops netlink_ops = {
 	.sendmsg =	netlink_sendmsg,
 	.recvmsg =	netlink_recvmsg,
 	.mmap =		sock_no_mmap,
-	.sendpage =	sock_no_sendpage,
 };
 
 static const struct net_proto_family netlink_family_ops = {
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 5a4cb796150f..eb8ccbd58df7 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -1364,7 +1364,6 @@ static const struct proto_ops nr_proto_ops = {
 	.sendmsg	=	nr_sendmsg,
 	.recvmsg	=	nr_recvmsg,
 	.mmap		=	sock_no_mmap,
-	.sendpage	=	sock_no_sendpage,
 };
 
 static struct notifier_block nr_dev_notifier = {
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index a2dbeb264f26..85ff90a03b0c 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -4621,7 +4621,6 @@ static const struct proto_ops packet_ops_spkt = {
 	.sendmsg =	packet_sendmsg_spkt,
 	.recvmsg =	packet_recvmsg,
 	.mmap =		sock_no_mmap,
-	.sendpage =	sock_no_sendpage,
 };
 
 static const struct proto_ops packet_ops = {
@@ -4643,7 +4642,6 @@ static const struct proto_ops packet_ops = {
 	.sendmsg =	packet_sendmsg,
 	.recvmsg =	packet_recvmsg,
 	.mmap =		packet_mmap,
-	.sendpage =	sock_no_sendpage,
 };
 
 static const struct net_proto_family packet_family_ops = {
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index 967f9b4dc026..1018340d89a7 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -441,7 +441,6 @@ const struct proto_ops phonet_dgram_ops = {
 	.sendmsg	= pn_socket_sendmsg,
 	.recvmsg	= sock_common_recvmsg,
 	.mmap		= sock_no_mmap,
-	.sendpage	= sock_no_sendpage,
 };
 
 const struct proto_ops phonet_stream_ops = {
@@ -462,7 +461,6 @@ const struct proto_ops phonet_stream_ops = {
 	.sendmsg	= pn_socket_sendmsg,
 	.recvmsg	= sock_common_recvmsg,
 	.mmap		= sock_no_mmap,
-	.sendpage	= sock_no_sendpage,
 };
 EXPORT_SYMBOL(phonet_stream_ops);
 
diff --git a/net/qrtr/af_qrtr.c b/net/qrtr/af_qrtr.c
index 76f0434d3d06..78beb74146e7 100644
--- a/net/qrtr/af_qrtr.c
+++ b/net/qrtr/af_qrtr.c
@@ -1244,7 +1244,6 @@ static const struct proto_ops qrtr_proto_ops = {
 	.shutdown	= sock_no_shutdown,
 	.release	= qrtr_release,
 	.mmap		= sock_no_mmap,
-	.sendpage	= sock_no_sendpage,
 };
 
 static struct proto qrtr_proto = {
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c
index 3ff6995244e5..01c4cdfef45d 100644
--- a/net/rds/af_rds.c
+++ b/net/rds/af_rds.c
@@ -653,7 +653,6 @@ static const struct proto_ops rds_proto_ops = {
 	.sendmsg =	rds_sendmsg,
 	.recvmsg =	rds_recvmsg,
 	.mmap =		sock_no_mmap,
-	.sendpage =	sock_no_sendpage,
 };
 
 static void rds_sock_destruct(struct sock *sk)
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index ca2b17f32670..49dafe9ac72f 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -1496,7 +1496,6 @@ static const struct proto_ops rose_proto_ops = {
 	.sendmsg	=	rose_sendmsg,
 	.recvmsg	=	rose_recvmsg,
 	.mmap		=	sock_no_mmap,
-	.sendpage	=	sock_no_sendpage,
 };
 
 static struct notifier_block rose_dev_notifier = {
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index da0b3b5157d5..f2cf4aa99db2 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -954,7 +954,6 @@ static const struct proto_ops rxrpc_rpc_ops = {
 	.sendmsg	= rxrpc_sendmsg,
 	.recvmsg	= rxrpc_recvmsg,
 	.mmap		= sock_no_mmap,
-	.sendpage	= sock_no_sendpage,
 };
 
 static struct proto rxrpc_proto = {
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 664d1f2e9121..274d07bd774f 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1133,7 +1133,6 @@ static const struct proto_ops inet_seqpacket_ops = {
 	.sendmsg	   = inet_sendmsg,
 	.recvmsg	   = inet_recvmsg,
 	.mmap		   = sock_no_mmap,
-	.sendpage	   = sock_no_sendpage,
 };
 
 /* Registration with AF_INET family.  */
diff --git a/net/socket.c b/net/socket.c
index b778fc03c6e0..8c3c8b29995a 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -3553,54 +3553,6 @@ int kernel_getpeername(struct socket *sock, struct sockaddr *addr)
 EXPORT_SYMBOL(kernel_getpeername);
 
 /**
- *	kernel_sendpage - send a &page through a socket (kernel space)
- *	@sock: socket
- *	@page: page
- *	@offset: page offset
- *	@size: total size in bytes
- *	@flags: flags (MSG_DONTWAIT, ...)
- *
- *	Returns the total amount sent in bytes or an error.
- */
-
-int kernel_sendpage(struct socket *sock, struct page *page, int offset,
-		    size_t size, int flags)
-{
-	if (sock->ops->sendpage) {
-		/* Warn in case the improper page to zero-copy send */
-		WARN_ONCE(!sendpage_ok(page), "improper page for zero-copy send");
-		return sock->ops->sendpage(sock, page, offset, size, flags);
-	}
-	return sock_no_sendpage(sock, page, offset, size, flags);
-}
-EXPORT_SYMBOL(kernel_sendpage);
-
-/**
- *	kernel_sendpage_locked - send a &page through the locked sock (kernel space)
- *	@sk: sock
- *	@page: page
- *	@offset: page offset
- *	@size: total size in bytes
- *	@flags: flags (MSG_DONTWAIT, ...)
- *
- *	Returns the total amount sent in bytes or an error.
- *	Caller must hold @sk.
- */
-
-int kernel_sendpage_locked(struct sock *sk, struct page *page, int offset,
-			   size_t size, int flags)
-{
-	struct socket *sock = sk->sk_socket;
-
-	if (sock->ops->sendpage_locked)
-		return sock->ops->sendpage_locked(sk, page, offset, size,
-						  flags);
-
-	return sock_no_sendpage_locked(sk, page, offset, size, flags);
-}
-EXPORT_SYMBOL(kernel_sendpage_locked);
-
-/**
  *	kernel_sock_shutdown - shut down part of a full-duplex connection (kernel space)
  *	@sock: socket
  *	@how: connection part
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index dd73d71c02a9..ef8e5139a873 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -3375,7 +3375,6 @@ static const struct proto_ops msg_ops = {
 	.sendmsg	= tipc_sendmsg,
 	.recvmsg	= tipc_recvmsg,
 	.mmap		= sock_no_mmap,
-	.sendpage	= sock_no_sendpage
 };
 
 static const struct proto_ops packet_ops = {
@@ -3396,7 +3395,6 @@ static const struct proto_ops packet_ops = {
 	.sendmsg	= tipc_send_packet,
 	.recvmsg	= tipc_recvmsg,
 	.mmap		= sock_no_mmap,
-	.sendpage	= sock_no_sendpage
 };
 
 static const struct proto_ops stream_ops = {
@@ -3417,7 +3415,6 @@ static const struct proto_ops stream_ops = {
 	.sendmsg	= tipc_sendstream,
 	.recvmsg	= tipc_recvstream,
 	.mmap		= sock_no_mmap,
-	.sendpage	= sock_no_sendpage
 };
 
 static const struct net_proto_family tipc_family_ops = {
diff --git a/net/tls/tls.h b/net/tls/tls.h
index d002c3af1966..86cef1c68e03 100644
--- a/net/tls/tls.h
+++ b/net/tls/tls.h
@@ -98,10 +98,6 @@ void tls_sw_strparser_arm(struct sock *sk, struct tls_context *ctx);
 void tls_sw_strparser_done(struct tls_context *tls_ctx);
 int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
 void tls_sw_splice_eof(struct socket *sock);
-int tls_sw_sendpage_locked(struct sock *sk, struct page *page,
-			   int offset, size_t size, int flags);
-int tls_sw_sendpage(struct sock *sk, struct page *page,
-		    int offset, size_t size, int flags);
 void tls_sw_cancel_work_tx(struct tls_context *tls_ctx);
 void tls_sw_release_resources_tx(struct sock *sk);
 void tls_sw_free_ctx_tx(struct tls_context *tls_ctx);
@@ -117,8 +113,6 @@ ssize_t tls_sw_splice_read(struct socket *sock, loff_t *ppos,
 
 int tls_device_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
 void tls_device_splice_eof(struct socket *sock);
-int tls_device_sendpage(struct sock *sk, struct page *page,
-			int offset, size_t size, int flags);
 int tls_tx_records(struct sock *sk, int flags);
 
 void tls_sw_write_space(struct sock *sk, struct tls_context *ctx);
diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index 975299d7213b..840ee06f1708 100644
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -621,23 +621,6 @@ void tls_device_splice_eof(struct socket *sock)
 	mutex_unlock(&tls_ctx->tx_lock);
 }
 
-int tls_device_sendpage(struct sock *sk, struct page *page,
-			int offset, size_t size, int flags)
-{
-	struct bio_vec bvec;
-	struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES, };
-
-	if (flags & MSG_SENDPAGE_NOTLAST)
-		msg.msg_flags |= MSG_MORE;
-
-	if (flags & MSG_OOB)
-		return -EOPNOTSUPP;
-
-	bvec_set_page(&bvec, page, size, offset);
-	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);
-	return tls_device_sendmsg(sk, &msg, size);
-}
-
 struct tls_record_info *tls_get_record(struct tls_offload_context_tx *context,
 				       u32 seq, u64 *p_record_sn)
 {
diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index 7b9c83dd7de2..d5ed4d47b16e 100644
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -958,7 +958,6 @@ static void build_proto_ops(struct proto_ops ops[TLS_NUM_CONFIG][TLS_NUM_CONFIG]
 
 	ops[TLS_SW  ][TLS_BASE] = ops[TLS_BASE][TLS_BASE];
 	ops[TLS_SW  ][TLS_BASE].splice_eof	= tls_sw_splice_eof;
-	ops[TLS_SW  ][TLS_BASE].sendpage_locked	= tls_sw_sendpage_locked;
 
 	ops[TLS_BASE][TLS_SW  ] = ops[TLS_BASE][TLS_BASE];
 	ops[TLS_BASE][TLS_SW  ].splice_read	= tls_sw_splice_read;
@@ -970,17 +969,14 @@ static void build_proto_ops(struct proto_ops ops[TLS_NUM_CONFIG][TLS_NUM_CONFIG]
 
 #ifdef CONFIG_TLS_DEVICE
 	ops[TLS_HW  ][TLS_BASE] = ops[TLS_BASE][TLS_BASE];
-	ops[TLS_HW  ][TLS_BASE].sendpage_locked	= NULL;
 
 	ops[TLS_HW  ][TLS_SW  ] = ops[TLS_BASE][TLS_SW  ];
-	ops[TLS_HW  ][TLS_SW  ].sendpage_locked	= NULL;
 
 	ops[TLS_BASE][TLS_HW  ] = ops[TLS_BASE][TLS_SW  ];
 
 	ops[TLS_SW  ][TLS_HW  ] = ops[TLS_SW  ][TLS_SW  ];
 
 	ops[TLS_HW  ][TLS_HW  ] = ops[TLS_HW  ][TLS_SW  ];
-	ops[TLS_HW  ][TLS_HW  ].sendpage_locked	= NULL;
 #endif
 #ifdef CONFIG_TLS_TOE
 	ops[TLS_HW_RECORD][TLS_HW_RECORD] = *base;
@@ -1029,7 +1025,6 @@ static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG],
 	prot[TLS_SW][TLS_BASE] = prot[TLS_BASE][TLS_BASE];
 	prot[TLS_SW][TLS_BASE].sendmsg		= tls_sw_sendmsg;
 	prot[TLS_SW][TLS_BASE].splice_eof	= tls_sw_splice_eof;
-	prot[TLS_SW][TLS_BASE].sendpage		= tls_sw_sendpage;
 
 	prot[TLS_BASE][TLS_SW] = prot[TLS_BASE][TLS_BASE];
 	prot[TLS_BASE][TLS_SW].recvmsg		  = tls_sw_recvmsg;
@@ -1045,12 +1040,10 @@ static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG],
 	prot[TLS_HW][TLS_BASE] = prot[TLS_BASE][TLS_BASE];
 	prot[TLS_HW][TLS_BASE].sendmsg		= tls_device_sendmsg;
 	prot[TLS_HW][TLS_BASE].splice_eof	= tls_device_splice_eof;
-	prot[TLS_HW][TLS_BASE].sendpage		= tls_device_sendpage;
 
 	prot[TLS_HW][TLS_SW] = prot[TLS_BASE][TLS_SW];
 	prot[TLS_HW][TLS_SW].sendmsg		= tls_device_sendmsg;
 	prot[TLS_HW][TLS_SW].splice_eof		= tls_device_splice_eof;
-	prot[TLS_HW][TLS_SW].sendpage		= tls_device_sendpage;
 
 	prot[TLS_BASE][TLS_HW] = prot[TLS_BASE][TLS_SW];
 
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 319f61590d2c..9b3aa89a4292 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1281,41 +1281,6 @@ unlock:
 	mutex_unlock(&tls_ctx->tx_lock);
 }
 
-int tls_sw_sendpage_locked(struct sock *sk, struct page *page,
-			   int offset, size_t size, int flags)
-{
-	struct bio_vec bvec;
-	struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES, };
-
-	if (flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL |
-		      MSG_SENDPAGE_NOTLAST | MSG_SENDPAGE_NOPOLICY |
-		      MSG_NO_SHARED_FRAGS))
-		return -EOPNOTSUPP;
-	if (flags & MSG_SENDPAGE_NOTLAST)
-		msg.msg_flags |= MSG_MORE;
-
-	bvec_set_page(&bvec, page, size, offset);
-	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);
-	return tls_sw_sendmsg_locked(sk, &msg, size);
-}
-
-int tls_sw_sendpage(struct sock *sk, struct page *page,
-		    int offset, size_t size, int flags)
-{
-	struct bio_vec bvec;
-	struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES, };
-
-	if (flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL |
-		      MSG_SENDPAGE_NOTLAST | MSG_SENDPAGE_NOPOLICY))
-		return -EOPNOTSUPP;
-	if (flags & MSG_SENDPAGE_NOTLAST)
-		msg.msg_flags |= MSG_MORE;
-
-	bvec_set_page(&bvec, page, size, offset);
-	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);
-	return tls_sw_sendmsg(sk, &msg, size);
-}
-
 static int
 tls_rx_rec_wait(struct sock *sk, struct sk_psock *psock, bool nonblock,
 		bool released)
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index f9d196439b49..f2f234f0b92c 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -758,8 +758,6 @@ static int unix_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned lon
 static int unix_shutdown(struct socket *, int);
 static int unix_stream_sendmsg(struct socket *, struct msghdr *, size_t);
 static int unix_stream_recvmsg(struct socket *, struct msghdr *, size_t, int);
-static ssize_t unix_stream_sendpage(struct socket *, struct page *, int offset,
-				    size_t size, int flags);
 static ssize_t unix_stream_splice_read(struct socket *,  loff_t *ppos,
 				       struct pipe_inode_info *, size_t size,
 				       unsigned int flags);
@@ -852,7 +850,6 @@ static const struct proto_ops unix_stream_ops = {
 	.recvmsg =	unix_stream_recvmsg,
 	.read_skb =	unix_stream_read_skb,
 	.mmap =		sock_no_mmap,
-	.sendpage =	unix_stream_sendpage,
 	.splice_read =	unix_stream_splice_read,
 	.set_peek_off =	unix_set_peek_off,
 	.show_fdinfo =	unix_show_fdinfo,
@@ -878,7 +875,6 @@ static const struct proto_ops unix_dgram_ops = {
 	.read_skb =	unix_read_skb,
 	.recvmsg =	unix_dgram_recvmsg,
 	.mmap =		sock_no_mmap,
-	.sendpage =	sock_no_sendpage,
 	.set_peek_off =	unix_set_peek_off,
 	.show_fdinfo =	unix_show_fdinfo,
 };
@@ -902,7 +898,6 @@ static const struct proto_ops unix_seqpacket_ops = {
 	.sendmsg =	unix_seqpacket_sendmsg,
 	.recvmsg =	unix_seqpacket_recvmsg,
 	.mmap =		sock_no_mmap,
-	.sendpage =	sock_no_sendpage,
 	.set_peek_off =	unix_set_peek_off,
 	.show_fdinfo =	unix_show_fdinfo,
 };
@@ -2294,20 +2289,6 @@ out_err:
 	return sent ? : err;
 }
 
-static ssize_t unix_stream_sendpage(struct socket *socket, struct page *page,
-				    int offset, size_t size, int flags)
-{
-	struct bio_vec bvec;
-	struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES };
-
-	if (flags & MSG_SENDPAGE_NOTLAST)
-		msg.msg_flags |= MSG_MORE;
-
-	bvec_set_page(&bvec, page, size, offset);
-	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, &bvec, 1, size);
-	return unix_stream_sendmsg(socket, &msg, size);
-}
-
 static int unix_seqpacket_sendmsg(struct socket *sock, struct msghdr *msg,
 				  size_t len)
 {
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index efb8a0937a13..020cf17ab7e4 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -1306,7 +1306,6 @@ static const struct proto_ops vsock_dgram_ops = {
 	.sendmsg = vsock_dgram_sendmsg,
 	.recvmsg = vsock_dgram_recvmsg,
 	.mmap = sock_no_mmap,
-	.sendpage = sock_no_sendpage,
 	.read_skb = vsock_read_skb,
 };
 
@@ -2234,7 +2233,6 @@ static const struct proto_ops vsock_stream_ops = {
 	.sendmsg = vsock_connectible_sendmsg,
 	.recvmsg = vsock_connectible_recvmsg,
 	.mmap = sock_no_mmap,
-	.sendpage = sock_no_sendpage,
 	.set_rcvlowat = vsock_set_rcvlowat,
 	.read_skb = vsock_read_skb,
 };
@@ -2257,7 +2255,6 @@ static const struct proto_ops vsock_seqpacket_ops = {
 	.sendmsg = vsock_connectible_sendmsg,
 	.recvmsg = vsock_connectible_recvmsg,
 	.mmap = sock_no_mmap,
-	.sendpage = sock_no_sendpage,
 	.read_skb = vsock_read_skb,
 };
 
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 5c7ad301d742..0fb5143bec7a 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1757,7 +1757,6 @@ static const struct proto_ops x25_proto_ops = {
 	.sendmsg =	x25_sendmsg,
 	.recvmsg =	x25_recvmsg,
 	.mmap =		sock_no_mmap,
-	.sendpage =	sock_no_sendpage,
 };
 
 static struct packet_type x25_packet_type __read_mostly = {
diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index cc1e7f15fa73..5a8c0dd250af 100644
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c
@@ -1389,7 +1389,6 @@ static const struct proto_ops xsk_proto_ops = {
 	.sendmsg	= xsk_sendmsg,
 	.recvmsg	= xsk_recvmsg,
 	.mmap		= xsk_mmap,
-	.sendpage	= sock_no_sendpage,
 };
 
 static void xsk_destruct(struct sock *sk)