Add the memory barriers added by
e59fb3120b.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
unsigned long gp_duration;
WARN_ON_ONCE(!rcu_gp_in_progress(rsp));
unsigned long gp_duration;
WARN_ON_ONCE(!rcu_gp_in_progress(rsp));
+
+ /*
+ * Ensure that all grace-period and pre-grace-period activity
+ * is seen before the assignment to rsp->completed.
+ */
+ smp_mb(); /* See above block comment. */
gp_duration = jiffies - rsp->gp_start;
if (gp_duration > rsp->gp_max)
rsp->gp_max = gp_duration;
gp_duration = jiffies - rsp->gp_start;
if (gp_duration > rsp->gp_max)
rsp->gp_max = gp_duration;