list: Use WRITE_ONCE() when adding to lists and hlists (1c97be67) · Commits · 戴 / test

include/linux/list.h

+4 −4

Original line number	Diff line number	Diff line
		@@ -42,7 +42,7 @@ static inline void __list_add(struct list_head *new,
		next->prev = new;
		new->next = next;
		new->prev = prev;
		prev->next = new;
		WRITE_ONCE(prev->next, new);
		}
		#else
		extern void __list_add(struct list_head *new,
		@@ -642,7 +642,7 @@ static inline void hlist_add_head(struct hlist_node n, struct hlist_head h)
		n->next = first;
		if (first)
		first->pprev = &n->next;
		h->first = n;
		WRITE_ONCE(h->first, n);
		n->pprev = &h->first;
		}

		@@ -653,14 +653,14 @@ static inline void hlist_add_before(struct hlist_node *n,
		n->pprev = next->pprev;
		n->next = next;
		next->pprev = &n->next;
		*(n->pprev) = n;
		WRITE_ONCE(*(n->pprev), n);
		}

		static inline void hlist_add_behind(struct hlist_node *n,
		struct hlist_node *prev)
		{
		n->next = prev->next;
		prev->next = n;
		WRITE_ONCE(prev->next, n);
		n->pprev = &prev->next;

		if (n->next)

+1 −1

Original line number	Diff line number	Diff line
		@@ -37,7 +37,7 @@ void __list_add(struct list_head *new,
		next->prev = new;
		new->next = next;
		new->prev = prev;
		prev->next = new;
		WRITE_ONCE(prev->next, new);
		}
		EXPORT_SYMBOL(__list_add);