Re: [PATCH v3 1/5] selftests/mm: skip COW tmpfile cases when fallocate() is unsupported

[David Hildenbrand (Arm)]

On 7/27/26 11:52, Muhammad Usama Anjum wrote:
> The tmpfile-backed COW cases allocate a one-page file with fallocate()
> before exercising private and shared mappings.  When the filesystem
> backing tmpfile() does not implement fallocate(), setup fails with
> EOPNOTSUPP and no COW behavior is exercised.
> 
> This occurs when the temporary directory resides on a filesystem with
> limited allocation support, such as NFSv3.  Reporting a failure adds
> noise because the test prerequisite is absent rather than the COW
> implementation being broken.
> 
> Report EOPNOTSUPP as a skip.  Continue treating every other fallocate()
> error as a failure so unexpected setup regressions remain visible.
> 
> Tested-by: Sarthak Sharma <sarthak.sharma@xxxxxxx>
> Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxx>
> ---

Worth a Fixes: ? I think so.

Acked-by: David Hildenbrand (Arm) <david@xxxxxxxxxx>

-- 
Cheers,

David