From: Wei Yang Date: Fri, 7 Aug 2020 06:25:41 +0000 (-0700) Subject: mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migratetype_bits X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d38ac97f8a7c4519ba141bbd7c2f7a8da8c9ff8d;p=linux.git mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migratetype_bits 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 Signed-off-by: Andrew Morton Cc: Mel Gorman Link: http://lkml.kernel.org/r/20200623124201.8199-1-richard.weiyang@linux.alibaba.com Signed-off-by: Linus Torvalds --- diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 2eef8afd3a0f6..f509ede317b5e 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), \