1283 	struct uffdio_register uffdio_register;  in userfaultfd_register()  local
1284 	struct uffdio_register __user *user_uffdio_register;  in userfaultfd_register()
1290 	user_uffdio_register = (struct uffdio_register __user *) arg;  in userfaultfd_register()
1293 	if (copy_from_user(&uffdio_register, user_uffdio_register,  in userfaultfd_register()
1294 			   sizeof(uffdio_register)-sizeof(__u64)))  in userfaultfd_register()
1298 	if (!uffdio_register.mode)  in userfaultfd_register()
1300 	if (uffdio_register.mode & ~UFFD_API_REGISTER_MODES)  in userfaultfd_register()
1303 	if (uffdio_register.mode & UFFDIO_REGISTER_MODE_MISSING)  in userfaultfd_register()
1305 	if (uffdio_register.mode & UFFDIO_REGISTER_MODE_WP)  in userfaultfd_register()
1307 	if (uffdio_register.mode & UFFDIO_REGISTER_MODE_MINOR) {  in userfaultfd_register()
1314 	ret = validate_range(mm, uffdio_register.range.start,  in userfaultfd_register()
1315 			     uffdio_register.range.len);  in userfaultfd_register()
1319 	start = uffdio_register.range.start;  in userfaultfd_register()
1320 	end = start + uffdio_register.range.len;  in userfaultfd_register()
1488 		if (!(uffdio_register.mode & UFFDIO_REGISTER_MODE_WP))  in userfaultfd_register()
1492 		if (!(uffdio_register.mode & UFFDIO_REGISTER_MODE_MINOR))  in userfaultfd_register()