A temp list head will be replaced to inode i_subdirs.
Signed-off-by: Li Guifu <bluce....@aliyun.com>
---
include/erofs/list.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/include/erofs/list.h b/include/erofs/list.h
index 3572726..7238418 100644
--- a/include/erofs/list.h
+++ b/include/erofs/list.h
@@ -67,6 +67,22 @@ static inline int list_empty(struct list_head *head)
return head->next == head;
}
+/**
+ * list_replace - replace old entry by new one
+ * @old : the element to be replaced
+ * @new : the new element to insert
+ *
+ * If @old was empty, it will be overwritten.
+ */
+static inline void list_replace(struct list_head *old,
+ struct list_head *new)
+{
+ new->next = old->next;
+ new->next->prev = new;
+ new->prev = old->prev;
+ new->prev->next = new;
+}
+
#define list_entry(ptr, type, member) container_of(ptr, type, member)
#define list_first_entry(ptr, type, member)
\
--
2.17.1
