904 		int copy, i;  in do_tcp_sendpages()  local
907 		if (!tcp_send_head(sk) || (copy = size_goal - skb->len) <= 0) {  in do_tcp_sendpages()
917 			copy = size_goal;  in do_tcp_sendpages()
920 		if (copy > size)  in do_tcp_sendpages()
921 			copy = size;  in do_tcp_sendpages()
929 		if (!sk_wmem_schedule(sk, copy))  in do_tcp_sendpages()
933 			skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);  in do_tcp_sendpages()
936 			skb_fill_page_desc(skb, i, page, offset, copy);  in do_tcp_sendpages()
940 		skb->len += copy;  in do_tcp_sendpages()
941 		skb->data_len += copy;  in do_tcp_sendpages()
942 		skb->truesize += copy;  in do_tcp_sendpages()
943 		sk->sk_wmem_queued += copy;  in do_tcp_sendpages()
944 		sk_mem_charge(sk, copy);  in do_tcp_sendpages()
946 		tp->write_seq += copy;  in do_tcp_sendpages()
947 		TCP_SKB_CB(skb)->end_seq += copy;  in do_tcp_sendpages()
953 		copied += copy;  in do_tcp_sendpages()
954 		offset += copy;  in do_tcp_sendpages()
955 		if (!(size -= copy)) {  in do_tcp_sendpages()
1128 		int copy = 0;  in tcp_sendmsg()  local
1135 			copy = max - skb->len;  in tcp_sendmsg()
1138 		if (copy <= 0) {  in tcp_sendmsg()
1159 			copy = size_goal;  in tcp_sendmsg()
1171 		if (copy > msg_data_left(msg))  in tcp_sendmsg()
1172 			copy = msg_data_left(msg);  in tcp_sendmsg()
1177 			copy = min_t(int, copy, skb_availroom(skb));  in tcp_sendmsg()
1178 			err = skb_add_data_nocache(sk, skb, &msg->msg_iter, copy);  in tcp_sendmsg()
1198 			copy = min_t(int, copy, pfrag->size - pfrag->offset);  in tcp_sendmsg()
1200 			if (!sk_wmem_schedule(sk, copy))  in tcp_sendmsg()
1206 						       copy);  in tcp_sendmsg()
1212 				skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);  in tcp_sendmsg()
1215 						   pfrag->offset, copy);  in tcp_sendmsg()
1218 			pfrag->offset += copy;  in tcp_sendmsg()
1224 		tp->write_seq += copy;  in tcp_sendmsg()
1225 		TCP_SKB_CB(skb)->end_seq += copy;  in tcp_sendmsg()
1228 		copied += copy;  in tcp_sendmsg()