On Tue, Jul 31, 2018 at 10:36 AM Christopher Lameter <cl@xxxxxxxxx> wrote: > > If there is refcounting going on then why use SLAB_TYPESAFE_BY_RCU? To allow fast reuse of objects, without going through call_rcu() and reducing cache efficiency. I believe this is mentioned in Documentation/RCU/rculist_nulls.txt