[patch net-next v2 15/19] list: introduce list_for_each_entry_from_reverse helper
From: Jiri Pirko <jiri@resnulli.us>
Date: 2017-02-03 09:29:30
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Jiri Pirko <redacted> Similar to list_for_each_entry_continue and its reverse variant list_for_each_entry_continue_reverse, introduce reverse helper for list_for_each_entry_from. Signed-off-by: Jiri Pirko <redacted> Acked-by: Ido Schimmel <redacted> --- include/linux/list.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/include/linux/list.h b/include/linux/list.h
index d1039ec..ae537fa 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h@@ -527,6 +527,19 @@ static inline void list_splice_tail_init(struct list_head *list, pos = list_next_entry(pos, member)) /** + * list_for_each_entry_from_reverse - iterate backwards over list of given type + * from the current point + * @pos: the type * to use as a loop cursor. + * @head: the head for your list. + * @member: the name of the list_head within the struct. + * + * Iterate backwards over list of given type, continuing from current position. + */ +#define list_for_each_entry_from_reverse(pos, head, member) \ + for (; &pos->member != (head); \ + pos = list_prev_entry(pos, member)) + +/** * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry * @pos: the type * to use as a loop cursor. * @n: another type * to use as temporary storage
--
2.7.4