diff options
Diffstat (limited to 'include/linux/list.h')
| -rw-r--r-- | include/linux/list.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/list.h b/include/linux/list.h index dac16f99c701..b4a939b6b625 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -319,6 +319,15 @@ static inline int list_empty_careful(const struct list_head *head) return (next == head) && (next == head->prev); } +/** + * list_is_singular - tests whether a list has just one entry. + * @head: the list to test. + */ +static inline int list_is_singular(const struct list_head *head) +{ + return !list_empty(head) && (head->next == head->prev); +} + static inline void __list_splice(struct list_head *list, struct list_head *head) { |