rcu: Document interpretation of RCU-lockdep splats

There has been quite a bit of confusion about what RCU-lockdep splats
mean, so this commit adds some documentation describing how to
interpret them.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2011-07-21 17:10:40 -07:00
commit d7bd2d68aa