Re: [PATCH v5 3/3] selftests/lam: Test get_user() LAM pointer handling

From: Maciej Wieczor-Retman
Date: Fri Jan 24 2025 - 15:20:45 EST


On 2025-01-24 at 08:32:18 -0800, Dave Hansen wrote:
>On 11/27/24 09:35, Maciej Wieczor-Retman wrote:
>...
>> + switch (test->later) {
>> + case GET_USER_USER:
>> + /* Control group - properly tagger user pointer */
>> + ptr = (void *)set_metadata((uint64_t)ptr, test->lam);
>> + break;
>
>s/tagger/tagged/ ?

Thanks!

>
>> + default:
>> + printf("Invalid test case value passed!\n");
>> + break;
>> + }
>> +
>> + if (ioctl(fd, FIOASYNC, ptr) != 0)
>> + ret = 1;
>> +
>> + close(fd);
>> +error:
>> + munmap(ptr, PAGE_SIZE);
>> + return ret;
>> +}
>
>I'd really prefer that the theory of operation be in a code comment and
>not just in the changelog.

Sure, I'll comment the ioctl() usage so it's more clear what's happening.

--
Kind regards
Maciej Wieczór-Retman