commit 6e67669678d2d51b2bcf0411aeb629b4353a9880
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> Thu Dec 05 14:56:54 2013 -0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> Mon Feb 17 14:55:58 2014 -0800
tree 954ea91326c4ca225a698ccb3d6e3c3f8ee4b3d0
parent 6d0abeca3242a88cab8232e4acd7e2bf088f3bc2

documentation: Document call_rcu() safety mechanisms and limitations

The call_rcu() family of primitives will take action to accelerate
grace periods when the number of callbacks pending on a given CPU
becomes excessive.  Although this safety mechanism can be useful,
it is no substitute for users of call_rcu() having rate-limit controls
in place.  This commit adds this nuance to the documentation.

Reported-by: "Michael S. Tsirkin" <mst@redhat.com>
Reported-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>