1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h
index 31f9d75adc5b..2eb88556c5c5 100644
--- a/include/linux/list_bl.h
+++ b/include/linux/list_bl.h
@@ -125,6 +125,11 @@ static inline void hlist_bl_unlock(struct hlist_bl_head *b)
         __bit_spin_unlock(0, (unsigned long *)b);
 }
 
+static inline bool hlist_bl_is_locked(struct hlist_bl_head *b)
+{
+        return bit_spin_is_locked(0, (unsigned long *)b);
+}
+
 /**
  * hlist_bl_for_each_entry      - iterate over list of given type
  * @tpos:       the type * to use as a loop cursor.