Otherwise it cause gcc warning: ^~~~~~~~~~~~~~~ ../mm/filemap.c:830:14: warning: no previous prototype for ‘__add_to_page_cache_locked’ [-Wmissing-prototypes] noinline int __add_to_page_cache_locked(struct page *page, ^~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: linux-mm@xxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx --- mm/filemap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/filemap.c b/mm/filemap.c index d90614f501da..249cf489f5df 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) -- 1.8.3.1