On 01/15/2014 01:33 AM, Geert Uytterhoeven wrote:
{,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 sparc):
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 <geert@xxxxxxxxxxxxxx>
Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx>
That also fixes the problem seen in stable-queue for 3.10 and 3.12,
so it may be a better fix for the problem seen there than the patch
provided by Michael.
Guenter
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