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 <jrdr.linux@xxxxxxxxx>
Cc: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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))
--
1.9.1
