===== net/ipv4/tcp_output.c 1.75 vs edited =====
--- 1.75/net/ipv4/tcp_output.c	2004-12-29 05:22:40 +11:00
+++ edited/net/ipv4/tcp_output.c	2005-01-15 09:43:48 +11:00
@@ -750,9 +750,21 @@
 		       tcp_snd_test(tp, skb, mss_now,
 			       	    tcp_skb_is_last(sk, skb) ? nonagle :
 				    			       TCP_NAGLE_PUSH)) {
+			unsigned int len, used;
+
 			if (skb->len > mss_now) {
 				if (tcp_fragment(sk, skb, mss_now))
 					break;
+			}
+
+			len = skb_netsize(skb);
+			used = skb->data_len + (skb->end - skb->head);
+			if (len > used) {
+				len -= used;
+				skb->truesize	     -= len;
+				sk->sk_queue_shrunk   = 1;
+				sk->sk_wmem_queued   -= len;
+				sk->sk_forward_alloc += len;
 			}
 
 			TCP_SKB_CB(skb)->when = tcp_time_stamp;