remove repeat implementation of page_referenced

[Wanpeng Li]

From: Wanpeng Li <liwp@xxxxxxxxxxxxxxxxxx>

page_referenced function just called from mm/vmscan.c to handle paging
out.It is realized in mm/rmap.c and has an interface exported in rmap.h.

Signed-off-by: Wanpeng Li <liwp@xxxxxxxxxxxxxxxxxx>
---
 include/linux/rmap.h |    8 --------
 1 file changed, 8 deletions(-)

diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index fd07c45..ee0c005 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -234,14 +234,6 @@ int rmap_walk(struct page *page, int (*rmap_one)(struct page *,
 #define anon_vma_prepare(vma)	(0)
 #define anon_vma_link(vma)	do {} while (0)
 
-static inline int page_referenced(struct page *page, int is_locked,
-				  struct mem_cgroup *memcg,
-				  unsigned long *vm_flags)
-{
-	*vm_flags = 0;
-	return 0;
-}
-
 #define try_to_unmap(page, refs) SWAP_FAIL
 
 static inline int page_mkclean(struct page *page)
-- 
1.7.9.5

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