---

yaml
---
r: 312182
b: refs/heads/master
c: 1d1fb39
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3f5d3ea64f1783f0d4ea0d35890ae3297f045a8b
+refs/heads/master: 1d1fb395f6dbc07b36285bbedcf01a73b57f7cb5

trunk/kernel/rcutree.c

@@ -1350,7 +1350,7 @@ rcu_send_cbs_to_orphanage(int cpu, struct rcu_state *rsp,
 		rsp->qlen += rdp->qlen;
 		rdp->n_cbs_orphaned += rdp->qlen;
 		rdp->qlen_lazy = 0;
-		rdp->qlen = 0;
+		ACCESS_ONCE(rdp->qlen) = 0;
 	}
 
 	/*
@@ -1600,7 +1600,7 @@ static void rcu_do_batch(struct rcu_state *rsp, struct rcu_data *rdp)
 	}
 	smp_mb(); /* List handling before counting for rcu_barrier(). */
 	rdp->qlen_lazy -= count_lazy;
-	rdp->qlen -= count;
+	ACCESS_ONCE(rdp->qlen) -= count;
 	rdp->n_cbs_invoked += count;
 
 	/* Reinstate batch limit if we have worked down the excess. */
@@ -1889,7 +1889,7 @@ __call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu),
 	rdp = this_cpu_ptr(rsp->rda);
 
 	/* Add the callback to our list. */
-	rdp->qlen++;
+	ACCESS_ONCE(rdp->qlen)++;
 	if (lazy)
 		rdp->qlen_lazy++;
 	else
@@ -2423,7 +2423,7 @@ rcu_boot_init_percpu_data(int cpu, struct rcu_state *rsp)
 	rdp->grpmask = 1UL << (cpu - rdp->mynode->grplo);
 	init_callback_list(rdp);
 	rdp->qlen_lazy = 0;
-	rdp->qlen = 0;
+	ACCESS_ONCE(rdp->qlen) = 0;
 	rdp->dynticks = &per_cpu(rcu_dynticks, cpu);
 	WARN_ON_ONCE(rdp->dynticks->dynticks_nesting != DYNTICK_TASK_EXIT_IDLE);
 	WARN_ON_ONCE(atomic_read(&rdp->dynticks->dynticks) != 1);