On Fri, Jul 28, 2017 at 10:34:42AM +0200, Florian Westphal wrote: > switch to lockless lockup. write side now also increments sequence > counter. On lookup, sample counter value and only take the lock > if we did not find a match and the counter has changed. > > This avoids need to write to private area in normal (lookup) cases. > > In case we detect a writer (seqretry is true) we fall back to taking > the readlock. > > The readlock is also used during dumps to ensure we get a consistent > tree walk. > > Similar technique (rbtree+seqlock) was used by David Howells in rxrpc. Applied, thanks. I think this is still going to be slower than any native rcu-friendly tree implementation, so I still see value for the bonsai tree idea. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
