rcu: Point to documentation of ordering guarantees

Add comments to synchronize_rcu() and friends that point to
Documentation/RCU/Design/Memory-Ordering/Tree-RCU-Memory-Ordering.rst.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2021-04-16 16:53:16 -07:00
commit 3d3a0d1b50
2 changed files with 21 additions and 2 deletions