diff options
Diffstat (limited to 'lib/llist.c')
| -rw-r--r-- | lib/llist.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/llist.c b/lib/llist.c index 6c69f1d14c4b..878985c4d19d 100644 --- a/lib/llist.c +++ b/lib/llist.c @@ -34,8 +34,10 @@ * @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. */ -void llist_add_batch(struct llist_node *new_first, struct llist_node *new_last, +bool llist_add_batch(struct llist_node *new_first, struct llist_node *new_last, struct llist_head *head) { struct llist_node *entry, *old_entry; @@ -49,6 +51,8 @@ void llist_add_batch(struct llist_node *new_first, struct llist_node *new_last, break; cpu_relax(); } + + return old_entry == NULL; } EXPORT_SYMBOL_GPL(llist_add_batch); |