The D-cache maintenance inside move_to_new_page() only consider one page,
there is still D-cache maintenance issue for tail pages of THP. Fix this
by using flush_dcache_folio().
Fixes: 616b8371539a ("mm: thp: enable thp migration in generic path")
Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
---
mm/migrate.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index c9296d63878d..daf2b3508670 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -934,8 +934,7 @@ static int move_to_new_page(struct page *newpage, struct page *page,
page->mapping = NULL;
if (likely(!is_zone_device_page(newpage)))
- flush_dcache_page(newpage);
-
+ flush_dcache_folio(page_folio(newpage));
}
out:
return rc;
--
2.11.0
