diff --git a/mm/mremap.c b/mm/mremap.c index ec8f840399ed4e507b942c786bcc50bf0c7e5077..db5b8b28c2dd0316524c0e5a97c525fc66d89388 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -653,8 +653,8 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr, return ERR_PTR(-EINVAL); } - if (flags & MREMAP_DONTUNMAP && (!vma_is_anonymous(vma) || - vma->vm_flags & VM_SHARED)) + if ((flags & MREMAP_DONTUNMAP) && + (vma->vm_flags & (VM_DONTEXPAND | VM_PFNMAP))) return ERR_PTR(-EINVAL); if (is_vm_hugetlb_page(vma))