diff options
| -rw-r--r-- | drivers/md/raid5.c | 14 | ||||
| -rw-r--r-- | include/linux/llist.h | 2 | ||||
| -rw-r--r-- | lib/llist.c | 22 |
3 files changed, 24 insertions, 14 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index f8b906843926..7f0e17a27aeb 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -293,20 +293,6 @@ static void __release_stripe(struct r5conf *conf, struct stripe_head *sh) do_release_stripe(conf, sh); } -static struct llist_node *llist_reverse_order(struct llist_node *head) -{ - struct llist_node *new_head = NULL; - - while (head) { - struct llist_node *tmp = head; - head = head->next; - tmp->next = new_head; - new_head = tmp; - } - - return new_head; -} - /* should hold conf->device_lock already */ static int release_stripe_list(struct r5conf *conf) { diff --git a/include/linux/llist.h b/include/linux/llist.h index 8828a78dec9a..fbf10a0bc095 100644 --- a/include/linux/llist.h +++ b/include/linux/llist.h @@ -195,4 +195,6 @@ static inline struct llist_node *llist_del_all(struct llist_head *head) extern struct llist_node *llist_del_first(struct llist_head *head); +struct llist_node *llist_reverse_order(struct llist_node *head); + #endif /* LLIST_H */ diff --git a/lib/llist.c b/lib/llist.c index 4a70d120138c..ef48b87247ec 100644 --- a/lib/llist.c +++ b/lib/llist.c @@ -81,3 +81,25 @@ struct llist_node *llist_del_first(struct llist_head *head) return entry; } EXPORT_SYMBOL_GPL(llist_del_first); + +/** + * llist_reverse_order - reverse order of a llist chain + * @head: first item of the list to be reversed + * + * Reverse the oder of a chain of llist entries and return the + * new first entry. + */ +struct llist_node *llist_reverse_order(struct llist_node *head) +{ + struct llist_node *new_head = NULL; + + while (head) { + struct llist_node *tmp = head; + head = head->next; + tmp->next = new_head; + new_head = tmp; + } + + return new_head; +} +EXPORT_SYMBOL_GPL(llist_reverse_order); |