[LTP] [PATCH] syscalls/ustat: Skip tests on Btrfs using TCONF

[Disha Goel]

On 19/03/26 10:03 pm, Cyril Hrubis wrote:
> Hi!
>> The ustat(2) system call is known to fail with EINVAL on Btrfs because
>> it uses anonymous device IDs for subvolumes, which the legacy syscall
>> cannot resolve to a physical block device.
>>
>> Currently, this results in a TFAIL, which causes false negatives in
>> automated CI environments (e.g., SLES). This patch adds dynamic
>> filesystem detection in setup() and uses tst_brk(TCONF, ...) to
>> gracefully skip the test on Btrfs.
> 
> That's why the test has known-fail tag, but maybe it's time to accept
> that ustat() is broken on Btrfs and it's not going to get fixed.
> 
> However we do have .skip_filesystems in tst_test structure exactly for
> cases like that, so it should be used instead.
> 
Hi Cyril,

Thank you for the review.

I will refactor both ustat01 and ustat02 to use .skip_filesystems and 
send a v2.

-- 
Regards,
Disha