[LSF/MM/BPF TOPIC] Changes in RCU over the past few years

["Paul E. McKenney" <paulmck@kernel.org>]

Hello!

There have been a number of changes to RCU over the past few years,
including consolidating the update-side RCU-preempt, RCU-sched,
and RCU-bh flavors, the addition of TREE SRCU, non-sleeping polled
grace-period interfaces for RCU and SRCU, and addition of a couple
variants of Tasks RCU.  This topic would include a quick overview of
these changes, with special attention to challenges when back porting to
pre-consolidated-RCU kernels.  Time permitting, it might also be useful
to look at some of the nuances of SLAB_DESTROY_BY_RCU.

This would also be an opportunity to discuss RCU use cases and potential
changes to RCU itself.

						Thanx, Paul