The checklist.rst document advises periodic synchronize_rcu() invocations to prevent callback flooding. However, rcu_barrier() is often a better choice. This commit therefore adds words to this effect. Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx> --- Documentation/RCU/checklist.rst | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/RCU/checklist.rst b/Documentation/RCU/checklist.rst index 2db206fc3465f..178ca7547b987 100644 --- a/Documentation/RCU/checklist.rst +++ b/Documentation/RCU/checklist.rst @@ -305,7 +305,8 @@ over a rather long period of time, but improvements are always welcome! the machine. d. Periodically invoke synchronize_rcu(), permitting a limited - number of updates per grace period. + number of updates per grace period. Better yet, periodically + invoke rcu_barrier() to wait for all outstanding callbacks. The same cautions apply to call_srcu() and kfree_rcu(). -- 2.31.1.189.g2e36527f23
