2011/5/16 Michał Mirosław <mirqus@xxxxxxxxx>: > W dniu 16 maja 2011 14:59 użytkownik Emmanuel Grumbach > <egrumbach@xxxxxxxxx> napisał: >> 2011/5/16 Michał Mirosław <mirqus@xxxxxxxxx>: >>> 2011/5/16 Emmanuel Grumbach <egrumbach@xxxxxxxxx>: >>>> I would like to be able to deliver the same page several times to the >>>> stack without having the stack consume it before the last time I >>>> deliver it. >>>> Of course I would like to avoid cloning it. >>> >>> Just do get_page() on the page having another packet in it before >>> passing skb up. >>> >> >> I can see the path: >> __kfree_skb -> skb_release_all -> skb_release_data -> put_page >> put_page will free the page iff the _count variable reaches 0. Of course, >> _count is incremented by get_page. >> >> I will give it try. >> >> I understand that this will work regardless the order given to >> alloc_pages right ? > > Yes. Remember that if you put a lot of packets in a big-order page > then the memory will be freed only after all packets are freed. Sure. Thanks for the help. > > Best Regards, > Michał Mirosław > -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
