diff options
| -rw-r--r-- | ccan/list/list.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/ccan/list/list.h b/ccan/list/list.h index dac63ad..1a73510 100644 --- a/ccan/list/list.h +++ b/ccan/list/list.h @@ -165,6 +165,25 @@ static inline void list_add(struct list_head *h, struct list_node *n) } /** + * list_add_before - add an entry before another entry. + * @h: the list_head to add the node to (we use it for debug purposes, can be NULL) + * @n: the list_node to add to the list. + * @p: the list_node of the other entry + * + * The list_node does not need to be initialized; it will be overwritten. + */ +static inline void list_add_before(struct list_head *h, struct list_node *n, + struct list_node *p) +{ + n->next = p; + n->prev = p->prev; + p->prev = n; + n->prev->next = n; + if (h) + (void)list_debug(h); +} + +/** * list_add_tail - add an entry at the end of a linked list. * @h: the list_head to add the node to * @n: the list_node to add to the list. |