We already have the definition of PB_migratetype_bits and current NR_MIGRATETYPE_BITS looks like a cyclic definition.
Just use PB_migratetype_bits is enough. Signed-off-by: Wei Yang <[email protected]> --- include/linux/mmzone.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index df1f08486d81..eeb0da54ff5f 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -88,8 +88,7 @@ static inline bool is_migrate_movable(int mt) extern int page_group_by_mobility_disabled; -#define NR_MIGRATETYPE_BITS (PB_migrate_end - PB_migrate + 1) -#define MIGRATETYPE_MASK ((1UL << NR_MIGRATETYPE_BITS) - 1) +#define MIGRATETYPE_MASK ((1UL << PB_migratetype_bits) - 1) #define get_pageblock_migratetype(page) \ get_pfnblock_flags_mask(page, page_to_pfn(page), \ -- 2.20.1 (Apple Git-117)
