rcu: Prohibit starting new grace periods while forcing quiescent states

[firefly-linux-kernel-4.4.55.git] / kernel / rcutree.h

diff --git a/kernel/rcutree.h b/kernel/rcutree.h
index d2a0046f63b297b41e4605b25ae178ee57883367..dc386a7c634f8038ab678cc961d1213ff4b8affd 100644 (file)
--- a/kernel/rcutree.h
+++ b/kernel/rcutree.h
@@ -277,6 +277,8 @@ struct rcu_state {
 
        u8      signaled ____cacheline_internodealigned_in_smp;
                                                /* Force QS state. */
+       u8      fqs_active;                     /* force_quiescent_state() */
+                                               /*  is running. */
        long    gpnum;                          /* Current gp number. */
        long    completed;                      /* # of last completed gp. */