[PATCH v2 03/14] powerpc: assert_pte_locked() use pte_offset_map_ro_nolock()

[Qi Zheng]

In assert_pte_locked(), we just get the ptl and assert if it was already
held, so convert it to using pte_offset_map_ro_nolock().

Signed-off-by: Qi Zheng <zhengqi.a...@bytedance.com>
---
 arch/powerpc/mm/pgtable.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index 7316396e452d8..61df5aed79894 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -398,7 +398,7 @@ void assert_pte_locked(struct mm_struct *mm, unsigned long 
addr)
         */
        if (pmd_none(*pmd))
                return;
-       pte = pte_offset_map_nolock(mm, pmd, addr, &ptl);
+       pte = pte_offset_map_ro_nolock(mm, pmd, addr, &ptl);
        BUG_ON(!pte);
        assert_spin_locked(ptl);
        pte_unmap(pte);
-- 
2.20.1