[PATCH] mm: fix the try_to_unmap prototype for !CONFIG_MMU

Adjust the nommu stub of try_to_unmap to match the changed protype
for the full version.  Turn it into an inline instead of a macro to
generally improve the type checking.

Fixes: 1fb08ac63bee ("mm: rmap: make try_to_unmap() void function")
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 include/linux/rmap.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index 83fb86133fe1..c976cc6de257 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h

@@ -291,7 +291,9 @@ static inline int page_referenced(struct page *page, int is_locked,
 	return 0;
 }
 
-#define try_to_unmap(page, refs) false
+static inline void try_to_unmap(struct page *page, enum ttu_flags flags)
+{
+}
 
 static inline int page_mkclean(struct page *page)
 {

-- 
2.30.2