handle_userfault
extern vm_fault_t handle_userfault(struct vm_fault *vmf, unsigned long reason);
ret = handle_userfault(vmf, VM_UFFD_MISSING);
ret = handle_userfault(vmf, VM_UFFD_MISSING);
return handle_userfault(vmf, reason);
return handle_userfault(&vmf, VM_UFFD_WP);
return handle_userfault(vmf, VM_UFFD_WP);
return handle_userfault(vmf, VM_UFFD_MISSING);
return handle_userfault(vmf, VM_UFFD_MISSING);
return handle_userfault(vmf, VM_UFFD_WP);
*fault_type = handle_userfault(vmf, VM_UFFD_MINOR);
*fault_type = handle_userfault(vmf, VM_UFFD_MISSING);