diff --git a/mm/migrate_device.c b/mm/migrate_device.c index b9c453c28795..9e19fadfa65c 100644 --- a/mm/migrate_device.c +++ b/mm/migrate_device.c @@ -739,19 +739,21 @@ static void migrate_vma_unmap(struct migrate_vma *migrate) */ int migrate_vma_setup(struct migrate_vma *args) { + const struct vm_area_struct *vma = args->vma; long nr_pages = (args->end - args->start) >> PAGE_SHIFT; args->start &= PAGE_MASK; args->end &= PAGE_MASK; - if (!args->vma || vma_test_any_mask(args->vma, VMA_SPECIAL_FLAGS) || - vma_is_dax(args->vma)) + if (!vma) + return -EINVAL; + /* The migrate_vma page walk has no hugetlb support. */ + if (!vma_is_mm_backed(vma) || vma_is_hugetlb(vma) || vma_is_dax(vma)) return -EINVAL; if (nr_pages <= 0) return -EINVAL; - if (args->start < args->vma->vm_start || - args->start >= args->vma->vm_end) + if (args->start < vma->vm_start || args->start >= vma->vm_end) return -EINVAL; - if (args->end <= args->vma->vm_start || args->end > args->vma->vm_end) + if (args->end <= vma->vm_start || args->end > vma->vm_end) return -EINVAL; if (!args->src || !args->dst) return -EINVAL;