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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-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261105030242.1241448-1-sashal@kernel.org> X-Stat-Signature: swke7fhjau5mhywp3z4ai1jpf1k4o6yo X-Rspamd-Server: rspam01 X-Rspam-User: X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Rspamd-Queue-Id: 9B3B112000C X-HE-Tag: 1793879397-187403 X-HE-Meta: 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 KLIkBtFy nLIaaPNXog95Of7qJKxXO6JC790Q27Ogc4UIgz5c6VG4cL9zQk0LxZH65tOZ3wTtTpq5eon0vBCG6vKvcWjVmj0cs7R9N7/QsIcYMPkUbP2D0T1UIVP4IK49Xx32iT9LgZynyMj/lgMYqmJkj1zffJHs27cxcG9RsVEfNGfwak8Tl+rSpXPzffPjcVNmRNtx/YvpcsBZxAIXccH61PZLHCynM4rguhGxGMEi0p5jwDDv4ZDvPA39RCRD9VQlhxLHVzp7s6R38ibCTyb1597Ef/GH+AHsMGE009aZsSwQE+LmOZLFcdlOCXzDJNqTpJl4bFuQPhKzGgltLJlK0sdKobzpBFOnOlKY2j98H Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 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