[PATCH 05/32] mm: Provide lru_to_last_page() to get last of a page list

[David Howells]

Provide a macro, lru_to_last_page(), to find the last page in a page list
(the opposite of lru_to_page()).

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
---

 include/linux/mm.h |    1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index dc7b87310c10..9692b9b58b06 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -216,6 +216,7 @@ int overcommit_kbytes_handler(struct ctl_table *, int, void *, size_t *,
 #define PAGE_ALIGNED(addr)	IS_ALIGNED((unsigned long)(addr), PAGE_SIZE)
 
 #define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
+#define lru_to_last_page(head) (list_entry((head)->next, struct page, lru))
 
 /*
  * Linux kernel virtual memory manager primitives.