fs: don't open code lru_to_page()

Multiple filesystems open code lru_to_page().  Rectify this by moving
the macro from mm_inline (which is specific to lru stuff) to the more
generic mm.h header and start using the macro where appropriate.

No functional changes.

Link: http://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Nikolay Borisov <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Reviewed-by: Mike Rapoport <[email protected]>
Acked-by: Pankaj gupta <[email protected]>
Acked-by: "Yan, Zheng" <[email protected]>		[ceph]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

2 files changed, 2 insertions, 3 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0d946f063cba..80bb6408fe73 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -171,6 +171,8 @@ extern int overcommit_kbytes_handler(struct ctl_table *, int, void __user *,
 /* test whether an address (unsigned long or pointer) is aligned to PAGE_SIZE */
 #define PAGE_ALIGNED(addr)	IS_ALIGNED((unsigned long)(addr), PAGE_SIZE)
 
+#define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
+
 /*
  * Linux kernel virtual memory manager primitives.
  * The idea being to have a "virtual" mm in the same way
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index 10191c28fc04..04ec454d44ce 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -124,7 +124,4 @@ static __always_inline enum lru_list page_lru(struct page *page)
 	}
 	return lru;
 }
-
-#define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
-
 #endif