From 3150be8fa89e4d1064d250bb3f8ea3665d1ec5e9 Mon Sep 17 00:00:00 2001
From: Muchun Song <songmuchun@bytedance.com>
Date: Tue, 22 Mar 2022 14:42:11 -0700
Subject: [PATCH] mm: replace multiple dcache flush with flush_dcache_folio()
Simplify the code by using flush_dcache_folio().
Link: https://lkml.kernel.org/r/20220210123058.79206-8-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Fam Zheng <fam.zheng@bytedance.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Lars Persson <lars.persson@axis.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
mm/migrate.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index 996c0e386734a..54b168a3b84a5 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -916,12 +916,8 @@ 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;
--
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