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-rw-r--r--include/linux/list_bl.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h
index 31f9d75adc5..2eb88556c5c 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.