[PATCH tip/core/rcu 0/4] SRCU updates for v4.21/v5.0

[Paul E. McKenney]

Hello!

This series contains SRCU updates:

1.	Fix kernel-doc missing notation, courtesy of Randy Dunlap.

2.	Prevent __call_srcu() counter wrap with read-side critical section.

3.	Lock srcu_data structure in srcu_gp_start(), fixing a an extremely
	rare but also extremely embarrassing concurrency bug, courtesy
	of Dennis Krein.

4.	Use "ssp" instead of "sp" for srcu_struct pointer, in the hope
	that this prevents confusion about which lock is held.

							Thanx, Paul

------------------------------------------------------------------------

 include/linux/srcu.h     |   81 ++++---
 include/linux/srcutiny.h |   24 +-
 include/linux/srcutree.h |    8 
 kernel/rcu/srcutiny.c    |  120 +++++------
 kernel/rcu/srcutree.c    |  493 +++++++++++++++++++++++------------------------
 5 files changed, 367 insertions(+), 359 deletions(-)