(2) Address-dependency barriers (historical).
+ [!] This section is marked as HISTORICAL: For more up-to-date
+ information, including how compiler transformations related to pointer
+ comparisons can sometimes cause problems, see
+ Documentation/RCU/rcu_dereference.rst.
An address-dependency barrier is a weaker form of read barrier. In the
case where two loads are performed such that the second depends on the
ADDRESS-DEPENDENCY BARRIERS (HISTORICAL)
----------------------------------------
+[!] This section is marked as HISTORICAL: For more up-to-date information,
+including how compiler transformations related to pointer comparisons can
+sometimes cause problems, see Documentation/RCU/rcu_dereference.rst.
As of v4.15 of the Linux kernel, an smp_mb() was added to READ_ONCE() for
DEC Alpha, which means that about the only people who need to pay attention