From: Anshuman Khandual <anshuman.khandual@arm.com>
Replace READ_ONCE() with a standard page table accessor i.e pudp_get() that
anyways defaults into READ_ONCE() in cases where platform does not override
Link: https://lkml.kernel.org/r/20251006055214.1845342-1-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Lance Yang <lance.yang@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
---
Changes in v3:
- New patch for v3 (cherry-picked from linux-next)
mm/mapping_dirty_helpers.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/mapping_dirty_helpers.c b/mm/mapping_dirty_helpers.c
index c193de6cb23a..737c407f4081 100644
--- a/mm/mapping_dirty_helpers.c
+++ b/mm/mapping_dirty_helpers.c
@@ -149,7 +149,7 @@ static int wp_clean_pud_entry(pud_t *pud, unsigned long addr, unsigned long end,
struct mm_walk *walk)
{
#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
- pud_t pudval = READ_ONCE(*pud);
+ pud_t pudval = pudp_get(pud);
/* Do not split a huge pud */
if (pud_trans_huge(pudval)) {
--
2.47.2