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Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Usama Arif , Shuah Khan , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] selftests/mm: skip split_huge_page_test without the split_huge_pages file Message-ID: References: <20261105030242.1241448-1-sashal@kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261105030242.1241448-1-sashal@kernel.org> 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 Acked-by: Kiryl Shutsemau (Meta) -- Kiryl Shutsemau / Kirill A. Shutemov