[PATCH] list_is_last utility

Add another list utility function to check for last element in a list.

Signed-off-by: Shailabh Nagar <nagar@watson.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/include/linux/list.h b/include/linux/list.h
index 6b74adf5297f644f82531a5fbcbc55b5892d13f7..65a5b5ceda4947d1478bba79abbda826963d128e 100644 (file)
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -264,6 +264,17 @@ static inline void list_move_tail(struct list_head *list,
         list_add_tail(list, head);
 }
 
+/**
+ * list_is_last - tests whether @list is the last entry in list @head
+ * @list: the entry to test
+ * @head: the head of the list
+ */
+static inline int list_is_last(const struct list_head *list,
+                               const struct list_head *head)
+{
+       return list->next == head;
+}
+
 /**
  * list_empty - tests whether a list is empty
  * @head: the list to test.