doc: Mention address and data dependencies in rcu_dereference.rst

This commit adds discussion of address and data dependencies to the
beginning of rcu_dereference.rst in order to enable readers to more
easily make the connection to the Linux-kernel memory model in general
and to memory-barriers.txt in particular.

Reported-by: Jonas Oberhauser <>
Reported-by: Akira Yokosawa <>
Signed-off-by: Paul E. McKenney <>
Signed-off-by: Neeraj Upadhyay (AMD) <>
1 file changed