1 files changed, 3 insertions, 2 deletions

diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h
index 2eb88556c5c5..8132214e8efd 100644
--- a/include/linux/list_bl.h
+++ b/include/linux/list_bl.h
@@ -93,9 +93,10 @@ static inline void __hlist_bl_del(struct hlist_bl_node *n)
         LIST_BL_BUG_ON((unsigned long)n & LIST_BL_LOCKMASK);
 
         /* pprev may be `first`, so be careful not to lose the lock bit */
-        *pprev = (struct hlist_bl_node *)
+        WRITE_ONCE(*pprev,
+                   (struct hlist_bl_node *)
                         ((unsigned long)next |
-                         ((unsigned long)*pprev & LIST_BL_LOCKMASK));
+                         ((unsigned long)*pprev & LIST_BL_LOCKMASK)));
         if (next)
                 next->pprev = pprev;
 }