Hi Chris, On 19.07.2011 19:30, Chris Mason wrote: > Hi everyone, > > I've pushed out a new integration-test branch, and it includes a new > reader/writer locking scheme for the btree locks. > I rebased my for-chris branch containing the readahead patches for scrub to your integration-test branch. It had only trivial conflicts. Hopefully it can go into 3.1 as well. -Arne > We've seen a number of benchmarks dominated by contention on the root > node lock. This changes our locks into a simple reader/writer lock. > They are based on mutexes so that we still take advantage of the mutex > adaptive spins for write locks (rwsemaphores were much slower). > > I'm also sending the individual commits, please do take a look. > > -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
