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Commit b862815c authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

list: introduce list_for_each_entry_from_reverse helper 



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: default avatarJiri Pirko <jiri@mellanox.com>
Acked-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8708ecf0

include/linux/list.h

+13 −0
Original line number Diff line number Diff line
@@ -526,6 +526,19 @@ static inline void list_splice_tail_init(struct list_head *list, 
	for (; &pos->member != (head);					\

	     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.