===== net/netlink/af_netlink.c 1.53 vs edited =====
--- 1.53/net/netlink/af_netlink.c	2004-09-22 12:32:44 +10:00
+++ edited/net/netlink/af_netlink.c	2004-09-25 09:53:19 +10:00
@@ -536,12 +536,25 @@
 	sock_put(sk);
 }
 
+static inline void netlink_trim(struct sk_buff *skb, int allocation)
+{
+	int delta = skb->end - skb->tail;
+
+	if (delta * 2 < skb->truesize)
+		return;
+	if (pskb_expand_head(skb, 0, -delta, allocation))
+		return;
+	skb->truesize -= delta;
+}
+
 int netlink_unicast(struct sock *ssk, struct sk_buff *skb, u32 pid, int nonblock)
 {
 	struct sock *sk;
 	int err;
 	long timeo;
 
+	netlink_trim(skb, gfp_any());
+
 	timeo = sock_sndtimeo(ssk, nonblock);
 retry:
 	sk = netlink_getsockbypid(ssk, pid);
@@ -587,6 +600,8 @@
 	struct sk_buff *skb2 = NULL;
 	int protocol = ssk->sk_protocol;
 	int failure = 0, delivered = 0;
+
+	netlink_trim(skb, allocation);
 
 	/* While we sleep in clone, do not allow to change socket list */