From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Tue, 20 Oct 2009 06:16:02 +0200

quoted text
> BTW, even an insertion can crash a lockless reader, since reader
>  could see a corrupt n->next (hlist_add_head() has no barrier
>  between n->next = first and h->first = n;)

Ok, now that convinces it for me, I'll apply your patch, thanks!
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