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-rw-r--r--kernel/rcu/tree.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 9af0f31d6847..fe83f684ddcd 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -268,7 +268,9 @@ struct rcu_data {
struct rcu_head **nocb_follower_tail;
struct swait_queue_head nocb_wq; /* For nocb kthreads to sleep on. */
struct task_struct *nocb_kthread;
+ raw_spinlock_t nocb_lock; /* Guard following pair of fields. */
int nocb_defer_wakeup; /* Defer wakeup of nocb_kthread. */
+ struct timer_list nocb_timer; /* Enforce finite deferral. */
/* The following fields are used by the leader, hence own cacheline. */
struct rcu_head *nocb_gp_head ____cacheline_internodealigned_in_smp;