X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=include%2Flinux%2Flist.h;h=75ce2cb4ff6ebc92a8fcaa557a9bd7b6b9b9b1b6;hb=bb04af0e2e5bcd8d1a5d7f7d5c704f7eb328f241;hp=ad9dcb9e337523337d5d2bacaa7c2e9f679f786a;hpb=e86908614f2c7fec401827e5cefd7a6ea9407f85;p=powerpc.git

diff --git a/include/linux/list.h b/include/linux/list.h
index ad9dcb9e33..75ce2cb4ff 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -477,6 +477,17 @@ static inline void list_splice_init_rcu(struct list_head *list,
 	for (pos = (head)->next, n = pos->next; pos != (head); \
 		pos = n, n = pos->next)
 
+/**
+ * list_for_each_prev_safe - iterate over a list backwards safe against removal of list entry
+ * @pos:	the &struct list_head to use as a loop cursor.
+ * @n:		another &struct list_head to use as temporary storage
+ * @head:	the head for your list.
+ */
+#define list_for_each_prev_safe(pos, n, head) \
+	for (pos = (head)->prev, n = pos->prev; \
+	     prefetch(pos->prev), pos != (head); \
+	     pos = n, n = pos->prev)
+
 /**
  * list_for_each_entry	-	iterate over list of given type
  * @pos:	the type * to use as a loop cursor.