MIPS: Rewrite pfn_valid to work in modules, too.

This fixes:

  MODPOST 393 modules
ERROR: "min_low_pfn" [arch/mips/kvm/kvm.ko] undefined!
make[3]: *** [__modpost] Error 1

It would have been possible to just export min_low_pfn but in the end
pfn_valid should return 1 for any pfn argument for which a struct page
exists so using min_low_pfn was wrong anyway.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2013-05-18 17:02:59 +02:00
Родитель 130901ba33
Коммит 8b9232141b
1 изменённых файлов: 7 добавлений и 8 удалений

Просмотреть файл

@ -171,14 +171,13 @@ typedef struct { unsigned long pgprot; } pgprot_t;
#ifdef CONFIG_FLATMEM
#define pfn_valid(pfn) \
({ \
unsigned long __pfn = (pfn); \
/* avoid <linux/bootmem.h> include hell */ \
extern unsigned long min_low_pfn; \
\
__pfn >= min_low_pfn && __pfn < max_mapnr; \
})
static inline int pfn_valid(unsigned long pfn)
{
/* avoid <linux/mm.h> include hell */
extern unsigned long max_mapnr;
return pfn >= ARCH_PFN_OFFSET && pfn < max_mapnr;
}
#elif defined(CONFIG_SPARSEMEM)