Re: [RFC PATCH v7 08/19] Make __alloc_skb() to get external buffer.

Eric Dumazet
2010-06-05T14:53:24Z

Le samedi 05 juin 2010 à 18:14 +0800, xiaohui.xin@intel.com a écrit :
> From: Xin Xiaohui <xiaohui.xin@intel.com>
> child->fclone = SKB_FCLONE_UNAVAILABLE;
> }
> + /* Record the external buffer info in this field. It's not so good,
> + * but we cannot find another place easily.
> + */
> + shinfo->destructor_arg = ext_page;
> +

Yes this is a big problem, its basically using a cache line that was not
touched before.