The flush_cache_page() only remove a PAGE_SIZE sized range from the cache.
However, it does not cover the full pages in a THP except a head page.
Replace it with flush_cache_range() to fix this issue. At least, no
problems were found due to this. Maybe because the architectures that
have virtual indexed caches is less.

Fixes: f27176cfc363 ("mm: convert page_mkclean_one() to use 
page_vma_mapped_walk()")
Signed-off-by: Muchun Song <songmuc...@bytedance.com>
Reviewed-by: Yang Shi <shy828...@gmail.com>
Reviewed-by: Dan Williams <dan.j.willi...@intel.com>
Reviewed-by: Christoph Hellwig <h...@lst.de>
---
 mm/rmap.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/rmap.c b/mm/rmap.c
index fc46a3d7b704..723682ddb9e8 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -970,7 +970,8 @@ static bool page_mkclean_one(struct folio *folio, struct 
vm_area_struct *vma,
                        if (!pmd_dirty(*pmd) && !pmd_write(*pmd))
                                continue;
 
-                       flush_cache_page(vma, address, folio_pfn(folio));
+                       flush_cache_range(vma, address,
+                                         address + HPAGE_PMD_SIZE);
                        entry = pmdp_invalidate(vma, address, pmd);
                        entry = pmd_wrprotect(entry);
                        entry = pmd_mkclean(entry);
-- 
2.11.0


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