867 		int copy, i;  in do_tcp_sendpages()  local
870 		if (!tcp_send_head(sk) || (copy = size_goal - skb->len) <= 0) {  in do_tcp_sendpages()
880 			copy = size_goal;  in do_tcp_sendpages()
883 		if (copy > size)  in do_tcp_sendpages()
884 			copy = size;  in do_tcp_sendpages()
892 		if (!sk_wmem_schedule(sk, copy))  in do_tcp_sendpages()
896 			skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);  in do_tcp_sendpages()
899 			skb_fill_page_desc(skb, i, page, offset, copy);  in do_tcp_sendpages()
903 		skb->len += copy;  in do_tcp_sendpages()
904 		skb->data_len += copy;  in do_tcp_sendpages()
905 		skb->truesize += copy;  in do_tcp_sendpages()
906 		sk->sk_wmem_queued += copy;  in do_tcp_sendpages()
907 		sk_mem_charge(sk, copy);  in do_tcp_sendpages()
909 		tp->write_seq += copy;  in do_tcp_sendpages()
910 		TCP_SKB_CB(skb)->end_seq += copy;  in do_tcp_sendpages()
916 		copied += copy;  in do_tcp_sendpages()
917 		offset += copy;  in do_tcp_sendpages()
918 		if (!(size -= copy))  in do_tcp_sendpages()
1106 			int copy = 0;  in tcp_sendmsg()  local
1113 				copy = max - skb->len;  in tcp_sendmsg()
1116 			if (copy <= 0) {  in tcp_sendmsg()
1137 				copy = size_goal;  in tcp_sendmsg()
1142 			if (copy > seglen)  in tcp_sendmsg()
1143 				copy = seglen;  in tcp_sendmsg()
1148 				copy = min_t(int, copy, skb_availroom(skb));  in tcp_sendmsg()
1149 				err = skb_add_data_nocache(sk, skb, from, copy);  in tcp_sendmsg()
1169 				copy = min_t(int, copy, pfrag->size - pfrag->offset);  in tcp_sendmsg()
1171 				if (!sk_wmem_schedule(sk, copy))  in tcp_sendmsg()
1177 							       copy);  in tcp_sendmsg()
1183 					skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy);  in tcp_sendmsg()
1186 							   pfrag->offset, copy);  in tcp_sendmsg()
1189 				pfrag->offset += copy;  in tcp_sendmsg()
1195 			tp->write_seq += copy;  in tcp_sendmsg()
1196 			TCP_SKB_CB(skb)->end_seq += copy;  in tcp_sendmsg()
1199 			from += copy;  in tcp_sendmsg()
1200 			copied += copy;  in tcp_sendmsg()
1201 			if ((seglen -= copy) == 0 && iovlen == 0)  in tcp_sendmsg()