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From:   Muchun Song <songmuchun@bytedance.com>
To:     akpm@linux-foundation.org, zi.yan@cs.rutgers.edu,
        kirill.shutemov@linux.intel.com, rientjes@google.com,
        lars.persson@axis.com, mike.kravetz@oracle.com, ziy@nvidia.com
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        duanxiongchun@bytedance.com, fam.zheng@bytedance.com,
        Muchun Song <songmuchun@bytedance.com>
Subject: [PATCH v5 7/7] mm: replace multiple dcache flush with flush_dcache_folio()
Date:   Thu, 10 Feb 2022 20:30:58 +0800
Message-Id: <20220210123058.79206-8-songmuchun@bytedance.com>
In-Reply-To: <20220210123058.79206-1-songmuchun@bytedance.com>
References: <20220210123058.79206-1-songmuchun@bytedance.com>
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Simplify the code by using flush_dcache_folio().

Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
---
 mm/migrate.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index c418e8d92b9c..daf2b3508670 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -933,12 +933,8 @@ static int move_to_new_page(struct page *newpage, struct page *page,
 		if (!PageMappingFlags(page))
 			page->mapping = NULL;
 
-		if (likely(!is_zone_device_page(newpage))) {
-			int i, nr = compound_nr(newpage);
-
-			for (i = 0; i < nr; i++)
-				flush_dcache_page(newpage + i);
-		}
+		if (likely(!is_zone_device_page(newpage)))
+			flush_dcache_folio(page_folio(newpage));
 	}
 out:
 	return rc;
-- 
2.11.0