920 		int copy, i;  in do_tcp_sendpages()  local
923 		if (!tcp_send_head(sk) || (copy = size_goal - skb->len) <= 0) {  in do_tcp_sendpages()
934 			copy = size_goal;  in do_tcp_sendpages()
937 		if (copy > size)  in do_tcp_sendpages()
938 			copy = size;  in do_tcp_sendpages()
946 		if (!sk_wmem_schedule(sk, copy))  in do_tcp_sendpages()
950 			skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);  in do_tcp_sendpages()
953 			skb_fill_page_desc(skb, i, page, offset, copy);  in do_tcp_sendpages()
957 		skb->len += copy;  in do_tcp_sendpages()
958 		skb->data_len += copy;  in do_tcp_sendpages()
959 		skb->truesize += copy;  in do_tcp_sendpages()
960 		sk->sk_wmem_queued += copy;  in do_tcp_sendpages()
961 		sk_mem_charge(sk, copy);  in do_tcp_sendpages()
963 		tp->write_seq += copy;  in do_tcp_sendpages()
964 		TCP_SKB_CB(skb)->end_seq += copy;  in do_tcp_sendpages()
970 		copied += copy;  in do_tcp_sendpages()
971 		offset += copy;  in do_tcp_sendpages()
972 		size -= copy;  in do_tcp_sendpages()
1151 		int copy = 0;  in tcp_sendmsg()  local
1158 			copy = max - skb->len;  in tcp_sendmsg()
1161 		if (copy <= 0) {  in tcp_sendmsg()
1183 			copy = size_goal;  in tcp_sendmsg()
1195 		if (copy > msg_data_left(msg))  in tcp_sendmsg()
1196 			copy = msg_data_left(msg);  in tcp_sendmsg()
1201 			copy = min_t(int, copy, skb_availroom(skb));  in tcp_sendmsg()
1202 			err = skb_add_data_nocache(sk, skb, &msg->msg_iter, copy);  in tcp_sendmsg()
1222 			copy = min_t(int, copy, pfrag->size - pfrag->offset);  in tcp_sendmsg()
1224 			if (!sk_wmem_schedule(sk, copy))  in tcp_sendmsg()
1230 						       copy);  in tcp_sendmsg()
1236 				skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);  in tcp_sendmsg()
1239 						   pfrag->offset, copy);  in tcp_sendmsg()
1242 			pfrag->offset += copy;  in tcp_sendmsg()
1248 		tp->write_seq += copy;  in tcp_sendmsg()
1249 		TCP_SKB_CB(skb)->end_seq += copy;  in tcp_sendmsg()
1252 		copied += copy;  in tcp_sendmsg()