diff options
| -rw-r--r-- | include/linux/llist.h | 23 | ||||
| -rw-r--r-- | lib/llist.c | 22 |
2 files changed, 20 insertions, 25 deletions
diff --git a/include/linux/llist.h b/include/linux/llist.h index 2c982ff7475a..27b17f64bcee 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -223,9 +223,26 @@ static inline struct llist_node *llist_next(struct llist_node *node) return node->next; } -extern bool llist_add_batch(struct llist_node *new_first, - struct llist_node *new_last, - struct llist_head *head); +/** + * llist_add_batch - add several linked entries in batch + * @new_first: first entry in batch to be added + * @new_last: last entry in batch to be added + * @head: the head for your lock-less list + * + * Return whether list is empty before adding. + */ +static inline bool llist_add_batch(struct llist_node *new_first, + struct llist_node *new_last, + struct llist_head *head) +{ + struct llist_node *first = READ_ONCE(head->first); + + do { + new_last->next = first; + } while (!try_cmpxchg(&head->first, &first, new_first)); + + return !first; +} static inline bool __llist_add_batch(struct llist_node *new_first, struct llist_node *new_last, diff --git a/lib/llist.c b/lib/llist.c index f21d0cfbbaaa..f574c17a238e 100644 --- a/lib/llist.c +++ b/lib/llist.c @@ -14,28 +14,6 @@ #include <linux/export.h> #include <linux/llist.h> - -/** - * llist_add_batch - add several linked entries in batch - * @new_first: first entry in batch to be added - * @new_last: last entry in batch to be added - * @head: the head for your lock-less list - * - * Return whether list is empty before adding. - */ -bool llist_add_batch(struct llist_node *new_first, struct llist_node *new_last, - struct llist_head *head) -{ - struct llist_node *first = READ_ONCE(head->first); - - do { - new_last->next = first; - } while (!try_cmpxchg(&head->first, &first, new_first)); - - return !first; -} -EXPORT_SYMBOL_GPL(llist_add_batch); - /** * llist_del_first - delete the first entry of lock-less list * @head: the head for your lock-less list |