Re: [PATCH] selftests/mm: skip split_huge_page_test without the split_huge_pages file

[Kiryl Shutsemau]

On Wed, Nov 04, 2026 at 10:02:42PM -0500, Sasha Levin wrote:
> Every case in split_huge_page_test goes through
> /sys/kernel/debug/split_huge_pages. When that file does not exist,
> because debugfs is not mounted or the kernel has no CONFIG_DEBUG_FS, the
> first write bails out of the whole test and it is reported as a failure:
> 
>   Bail out! write_file(/sys/kernel/debug/split_huge_pages): No such file or directory
> 
> Skip the test in that case.
> 
> Fixes: fa6c02315f74 ("mm: huge_memory: a new debugfs interface for splitting THP tests")
> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

Acked-by: Kiryl Shutsemau (Meta) <kas@xxxxxxxxxx>

-- 
  Kiryl Shutsemau / Kirill A. Shutemov