diff options
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 2d603771c7dc..a32494c4b6f6 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -393,8 +393,9 @@ void __rcu_read_unlock(void) { struct task_struct *t = current; + barrier(); // critical section before exit code. if (rcu_preempt_read_exit() == 0) { - barrier(); /* critical section before exit code. */ + barrier(); // critical-section exit before .s check. if (unlikely(READ_ONCE(t->rcu_read_unlock_special.s))) rcu_read_unlock_special(t); } |