tree 2831f1d9bf2c3523081312b4d0a5d45eaf19c6a8
parent 96224daa16d6589aff87339cf0f630ef13600a59
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1393632688 -0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1398785913 -0700

documentation: Record rcu_dereference() value mishandling

Recent LKML discussings (see http://lwn.net/Articles/586838/ and
http://lwn.net/Articles/588300/ for the LWN writeups) brought out
some ways of misusing the return value from rcu_dereference() that
are not necessarily completely intuitive.  This commit therefore
documents what can and cannot safely be done with these values.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>