userfaultfd_missing
if (userfaultfd_missing(vma)) {
if (is_register || userfaultfd_missing(vma) ||
if (userfaultfd_missing(vma)) {
} else if (userfaultfd_missing(vma)) {
if (userfaultfd_missing(vma)) {
if (userfaultfd_missing(vma)) {
if (userfaultfd_missing(vma)) {
if (userfaultfd_missing(vma)) {
if (userfaultfd_missing(vma))
if (userfaultfd_missing(vma))
if (vma && userfaultfd_missing(vma)) {