[PATCH 04/14] mm: filemap: filemap_fault_recheck_pte_none() use pte_offset_map_readonly_nolock()

[Qi Zheng <zhengqi.arch@bytedance.com>]

In filemap_fault_recheck_pte_none(), we just do pte_none() check, so
convert it to using pte_offset_map_readonly_nolock().

Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
---
 mm/filemap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index d87c858465962..491eb92d6db1f 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3228,8 +3228,8 @@ static vm_fault_t filemap_fault_recheck_pte_none(struct vm_fault *vmf)
 	if (!(vmf->flags & FAULT_FLAG_ORIG_PTE_VALID))
 		return 0;
 
-	ptep = pte_offset_map_nolock(vma->vm_mm, vmf->pmd, vmf->address,
-				     &vmf->ptl);
+	ptep = pte_offset_map_readonly_nolock(vma->vm_mm, vmf->pmd,
+					      vmf->address, &vmf->ptl);
 	if (unlikely(!ptep))
 		return VM_FAULT_NOPAGE;
 
-- 
2.20.1