diff options
Diffstat (limited to 'include/linux/list.h')
-rw-r--r-- | include/linux/list.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/list.h b/include/linux/list.h index 6a1f8df9144b..b83e5657365a 100644 --- a/include/linux/list.h +++ b/include/linux/list.h | |||
@@ -362,6 +362,17 @@ static inline void list_splice_tail_init(struct list_head *list, | |||
362 | list_entry((ptr)->next, type, member) | 362 | list_entry((ptr)->next, type, member) |
363 | 363 | ||
364 | /** | 364 | /** |
365 | * list_first_entry_or_null - get the first element from a list | ||
366 | * @ptr: the list head to take the element from. | ||
367 | * @type: the type of the struct this is embedded in. | ||
368 | * @member: the name of the list_struct within the struct. | ||
369 | * | ||
370 | * Note that if the list is empty, it returns NULL. | ||
371 | */ | ||
372 | #define list_first_entry_or_null(ptr, type, member) \ | ||
373 | (!list_empty(ptr) ? list_first_entry(ptr, type, member) : NULL) | ||
374 | |||
375 | /** | ||
365 | * list_for_each - iterate over a list | 376 | * list_for_each - iterate over a list |
366 | * @pos: the &struct list_head to use as a loop cursor. | 377 | * @pos: the &struct list_head to use as a loop cursor. |
367 | * @head: the head for your list. | 378 | * @head: the head for your list. |