rculist: Use WRITE_ONCE() when deleting from reader-visible list

[deliverable/linux.git] / include / linux / list_nulls.h

diff --git a/include/linux/list_nulls.h b/include/linux/list_nulls.h
index f266661d2666596d808bbe8756c91239f5b8e6dc..444d2b1313bda37647b1660e4582202a7e3b66e4 100644 (file)
--- a/include/linux/list_nulls.h
+++ b/include/linux/list_nulls.h
@@ -76,7 +76,8 @@ static inline void __hlist_nulls_del(struct hlist_nulls_node *n)
 {
        struct hlist_nulls_node *next = n->next;
        struct hlist_nulls_node **pprev = n->pprev;
-       *pprev = next;
+
+       WRITE_ONCE(*pprev, next);
        if (!is_a_nulls(next))
                next->pprev = pprev;
 }