diff options
Diffstat (limited to 'mm/userfaultfd.c')
| -rw-r--r-- | mm/userfaultfd.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c index 05dbbcafdcc0..7d6ab05be019 100644 --- a/mm/userfaultfd.c +++ b/mm/userfaultfd.c @@ -101,8 +101,12 @@ static int mcopy_atomic_pte(struct mm_struct *dst_mm, goto out_release; _dst_pte = pte_mkdirty(mk_pte(page, dst_vma->vm_page_prot)); - if ((dst_vma->vm_flags & VM_WRITE) && !wp_copy) - _dst_pte = pte_mkwrite(_dst_pte); + if (dst_vma->vm_flags & VM_WRITE) { + if (wp_copy) + _dst_pte = pte_mkuffd_wp(_dst_pte); + else + _dst_pte = pte_mkwrite(_dst_pte); + } dst_pte = pte_offset_map_lock(dst_mm, dst_pmd, dst_addr, &ptl); if (dst_vma->vm_file) { |