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-rw-r--r--kernel/rcutree.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/rcutree.h b/kernel/rcutree.h
index 049896a835d..586d93c978f 100644
--- a/kernel/rcutree.h
+++ b/kernel/rcutree.h
@@ -314,6 +314,9 @@ struct rcu_data {
unsigned long n_rp_need_fqs;
unsigned long n_rp_need_nothing;
+ /* 6) _rcu_barrier() callback. */
+ struct rcu_head barrier_head;
+
int cpu;
struct rcu_state *rsp;
};