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-rw-r--r--include/linux/list.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/list.h b/include/linux/list.h
index 9e9a6403dbe4..d3b4db895340 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -151,6 +151,23 @@ static inline void list_replace_init(struct list_head *old,
}
/**
+ * list_swap - replace entry1 with entry2 and re-add entry1 at entry2's position
+ * @entry1: the location to place entry2
+ * @entry2: the location to place entry1
+ */
+static inline void list_swap(struct list_head *entry1,
+ struct list_head *entry2)
+{
+ struct list_head *pos = entry2->prev;
+
+ list_del(entry2);
+ list_replace(entry1, entry2);
+ if (pos == entry1)
+ pos = entry2;
+ list_add(entry1, pos);
+}
+
+/**
* list_del_init - deletes entry from list and reinitialize it.
* @entry: the element to delete from the list.
*/