On Sat, Aug 05, 2006 at 08:33:07PM +1000, Herbert Xu ([EMAIL PROTECTED]) wrote: > On Sat, Aug 05, 2006 at 02:24:36PM +0400, Evgeniy Polyakov wrote: > > > > > If we had a flag to indicate writability we could also have a flag to > > > indicate that the memory comes from kmalloc rather than alloc_page. > > > > Yes, that would be good, but who will give us a bit in the struct page? > > Can we recreate frag_list elements to be a bitmasks and steal couple > > of them there, so we would not increase fragment's structure size? > > I wasn't thinking of a bit in struct page, but rather a bit in skb_frag_t.
Actually we can look into struct page, namely into page->lru.next, PG_slab bit or page->private (for combined pages), which are pointers to the appropriate cache, if given page was obtained through kmalloc. Or we can create bitmaks in fragments. > Cheers, > -- > Visit Openswan at http://www.openswan.org/ > Email: Herbert Xu ~{PmV>HI~} <[EMAIL PROTECTED]> > Home Page: http://gondor.apana.org.au/~herbert/ > PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- Evgeniy Polyakov - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
