3.11.10.4 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Geert Uytterhoeven <ge...@linux-m68k.org>
commit f92f455f67fef27929e6043499414605b0c94872 upstream.
{,set}page_address() are macros if WANT_PAGE_VIRTUAL. If
!WANT_PAGE_VIRTUAL, they're plain C functions.
If someone calls them with a void *, this pointer is auto-converted to
struct page * if !WANT_PAGE_VIRTUAL, but causes a build failure on
architectures using WANT_PAGE_VIRTUAL (arc, m68k and sparc64):
drivers/md/bcache/bset.c: In function `__btree_sort':
drivers/md/bcache/bset.c:1190: warning: dereferencing `void *' pointer
drivers/md/bcache/bset.c:1190: error: request for member `virtual' in
something not a structure or union
Convert them to static inline functions to fix this. There are already
plenty of users of struct page members inside <linux/mm.h>, so there's
no reason to keep them as macros.
Signed-off-by: Geert Uytterhoeven <ge...@linux-m68k.org>
Acked-by: Michael S. Tsirkin <m...@redhat.com>
Tested-by: Guenter Roeck <li...@roeck-us.net>
Tested-by: David Rientjes <rient...@google.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Luis Henriques <luis.henriq...@canonical.com>
---
include/linux/mm.h | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index f022460..a6154b1 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -769,11 +769,14 @@ static __always_inline void *lowmem_page_address(const
struct page *page)
#endif
#if defined(WANT_PAGE_VIRTUAL)
-#define page_address(page) ((page)->virtual)
-#define set_page_address(page, address) \
- do { \
- (page)->virtual = (address); \
- } while(0)
+static inline void *page_address(const struct page *page)
+{
+ return page->virtual;
+}
+static inline void set_page_address(struct page *page, void *address)
+{
+ page->virtual = address;
+}
#define page_address_init() do { } while(0)
#endif
--
1.8.3.2
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