Enhancement to AFR to introduce a delay between FOP phase and POST-OP phase to increase the probability of eager-locking and changelog-piggyback optimizations to kick in.
CHANGE: http://review.gluster.com/3620 (cluster/afr: cleanup lk_owner and PID mess) merged in master by Anand Avati (avati)
CHANGE: http://review.gluster.com/3621 (cluster/afr: post-op-delay support) merged in master by Anand Avati (avati)
patches are in upstream