[PATCH] mm: page_alloc: remove branch operation in free_pages_prepare()

[Joonsoo Kim]

When we found that the flag has a bit of PAGE_FLAGS_CHECK_AT_PREP,
we reset the flag. If we always reset the flag, we can reduce one
branch operation. So remove it.

Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8fcced7..778f2a9 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -614,8 +614,7 @@ static inline int free_pages_check(struct page *page)
 		return 1;
 	}
 	page_nid_reset_last(page);
-	if (page->flags & PAGE_FLAGS_CHECK_AT_PREP)
-		page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
+	page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
 	return 0;
 }
 
-- 
1.7.9.5

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