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Message-Id: <20200623124201.8199-1-richard.weiyang@linux.alibaba.com>
Date: Tue, 23 Jun 2020 20:41:58 +0800
From: Wei Yang <richard.weiyang@...ux.alibaba.com>
To: mgorman@...e.de, akpm@...ux-foundation.org,
richard.weiyang@...ux.alibaba.com
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/4] 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 <richard.weiyang@...ux.alibaba.com>
---
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)
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