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Tue, 22 Dec 2020 06:19:59 -0800 (PST) From: Souptick Joarder To: akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Souptick Joarder , Alex Shi Subject: [PATCH] mm: add prototype for __add_to_page_cache_locked() Date: Tue, 22 Dec 2020 19:49:52 +0530 Message-Id: <1608646792-29073-1-git-send-email-jrdr.linux@gmail.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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, ^~~~~~~~~~~~~~~~~~~~~~~~~~ A previous attempt to make this function static leads to compile error for few architectures. Adding a prototype will silence the warning. Signed-off-by: Souptick Joarder Cc: Alex Shi Cc: Andrew Morton --- include/linux/mm.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index 5299b90a..ac07f65 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -216,6 +216,12 @@ int overcommit_kbytes_handler(struct ctl_table *, int, void *, size_t *, loff_t *); int overcommit_policy_handler(struct ctl_table *, int, void *, size_t *, loff_t *); +/* + * Any attempt to mark this function as static leads to build failure + * for few architectures. Adding a prototype to silence gcc warning. + */ +int __add_to_page_cache_locked(struct page *page, struct address_space *mapping, + pgoff_t offset, gfp_t gfp, void **shadowp); #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))