[PATCH v4 03/13] mm: filemap: filemap_fault_recheck_pte_none() use pte_offset_map_ro_nolock()
From: Qi Zheng <hidden>
Date: 2024-09-24 06:10:47
Also in:
linux-arm-kernel, linux-mm, lkml
Subsystem:
memory management, page cache, the rest · Maintainers:
Andrew Morton, Matthew Wilcox, Linus Torvalds
In filemap_fault_recheck_pte_none(), we just do pte_none() check, so convert it to using pte_offset_map_ro_nolock(). Signed-off-by: Qi Zheng <redacted> Acked-by: David Hildenbrand <redacted> Reviewed-by: Muchun Song <muchun.song@linux.dev> --- mm/filemap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/filemap.c b/mm/filemap.c
index 3e46ca45e13dc..6c6ff8722550f 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c@@ -3271,8 +3271,8 @@ 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_ro_nolock(vma->vm_mm, vmf->pmd, vmf->address, + &vmf->ptl); if (unlikely(!ptep)) return VM_FAULT_NOPAGE;
--
2.20.1