rcu: Document that rcu_barrier() hurries lazy callbacks

This commit adds to the rcu_barrier() kerneldoc header stating that this
function hurries lazy callbacks and that it does not normally result in
additional RCU grace periods.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2025-06-23 12:39:55 -07:00
commit faab3ae329