On Sat, 09 Aug 2003 23:33:52 +0300 Mika Penttilä <mika.penttila@kolumbus.fi> wrote: > sg[elt].page = virt_to_page(skb->data + offset); > sg[elt].offset = (unsigned long)(skb->data + offset) % PAGE_SIZE; > sg[elt].length = copy; > > so unpinned pages are passed to cryptoapi. Nothing prevents these pages > from being swapped out. Something like get_user_pages() is needed to pin > these pages for the duration of crypto operations. Comments? The page at skb->data was allocated by the skbuff allocation layer, it has therefore a lifetime the size of the SKB itself. The crypto API call is finished before we can possibly free up the SKB, so nothing bad can happen. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
