[PATCH] mm/filemap: Fix warning: no previous prototype

[Xiangyang Yu]

Fixed the warning when building with warnings enabled (W=1),
This function is only used in filemap.c, so mark this function
with 'static'.

mm/filemap.c:830:14: warning: no previous prototype for ‘__add_to_page_cache_locked’ [-Wmissing-prototypes]

Signed-off-by: Xiangyang Yu <yuxiangyang4@xxxxxxxxxx>
---
 mm/filemap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index c178022d7893..edaba5251bec 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -827,7 +827,7 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask)
 }
 EXPORT_SYMBOL_GPL(replace_page_cache_page);
 
-noinline int __add_to_page_cache_locked(struct page *page,
+static noinline int __add_to_page_cache_locked(struct page *page,
 					struct address_space *mapping,
 					pgoff_t offset, gfp_t gfp,
 					void **shadowp)
-- 
2.23.0