1 --- a/net/netlink/af_netlink.c
2 +++ b/net/netlink/af_netlink.c
3 @@ -1776,27 +1776,7 @@ void netlink_detachskb(struct sock *sk,
5 static struct sk_buff *netlink_trim(struct sk_buff *skb, gfp_t allocation)
9 WARN_ON(skb->sk != NULL);
10 - if (netlink_skb_is_mmaped(skb))
13 - delta = skb->end - skb->tail;
14 - if (is_vmalloc_addr(skb->head) || delta * 2 < skb->truesize)
17 - if (skb_shared(skb)) {
18 - struct sk_buff *nskb = skb_clone(skb, allocation);
25 - if (!pskb_expand_head(skb, 0, -delta, allocation))
26 - skb->truesize -= delta;