From: Wu Fengguang <fengguang.wu@xxxxxxxxx>
Date: Thu, 9 Jul 2009 21:17:46 +0800
> @@ -2100,7 +2100,8 @@ void tcp_send_fin(struct sock *sk)
> } else {
> /* Socket is locked, keep trying until memory is available. */
> for (;;) {
> - skb = alloc_skb_fclone(MAX_TCP_HEADER, GFP_KERNEL);
> + skb = alloc_skb_fclone(MAX_TCP_HEADER,
> + sk->sk_allocation);
> if (skb)
> break;
> yield();
I think this specific case needs more thinking.
If the allocation fails, and it's GFP_ATOMIC, we are going to yield()
(which sleeps) and loop endlessly waiting for the allocation to
succeed.
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