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Subject[PATCH 1/1] mm/page_alloc: merge two get_pfnblock_migratetype() into one
Date
From: Deyan Wang <wonder_rock@126.com>

It is safe to get_pfnblock_migratetype() in critical section,
so just call get_pfnblock_migratetype() once.

Signed-off-by: Deyan Wang <wonder_rock@126.com>
---
mm/page_alloc.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 6652df1f5cc8..c7ba9d65d1c0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1704,13 +1704,8 @@ static void __free_pages_ok(struct page *page, unsigned int order,
if (!free_pages_prepare(page, order, true, fpi_flags))
return;

- migratetype = get_pfnblock_migratetype(page, pfn);
-
spin_lock_irqsave(&zone->lock, flags);
- if (unlikely(has_isolate_pageblock(zone) ||
- is_migrate_isolate(migratetype))) {
- migratetype = get_pfnblock_migratetype(page, pfn);
- }
+ migratetype = get_pfnblock_migratetype(page, pfn);
__free_one_page(page, pfn, zone, order, migratetype, fpi_flags);
spin_unlock_irqrestore(&zone->lock, flags);

--
2.25.1
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