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Fri, 2 May 2025 01:04:53 +0000 (UTC) Received: from llong-thinkpadp16vgen1.westford.csb (unknown [10.22.80.189]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 4136B19560A3; Fri, 2 May 2025 01:04:49 +0000 (UTC) From: Waiman Long To: Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt , Muchun Song , Andrew Morton , Tejun Heo , =?UTF-8?q?Michal=20Koutn=C3=BD?= , Shuah Khan Cc: linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, Waiman Long Subject: [PATCH v8 0/2] memcg: Fix test_memcg_min/low test failures Date: Thu, 1 May 2025 21:04:41 -0400 Message-ID: <20250502010443.106022-1-longman@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 5099814000D X-Stat-Signature: dofkh4ofn3cxzsbe7qpngsgrk8pg111m X-Rspam-User: X-HE-Tag: 1746147900-141372 X-HE-Meta: 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 WpCzg3Ot t+PHEIxAaBR4y7yrW2cHLeMRBFqhEAdY3hDeWmRB2WhOo9+htqcnUDeoXiOfzcgLUkNhVFzvZRXLZt6L3kaw3DGksXzuk1ykdeZLgDSgHRBwI+zWtmWI55atpHgxlcyTgGKxmYZHDPkzC5/YzZyVuoxS2PoQCLmlgL2cRik5uilmt7TjiZz+84T5EbXMyNtWfFo+VpdgeBrtShbhvpTUaHtY8ptLJ7W3GhQtCELhQoqKxrTKwddS4uQVddu/YabAcJdJkd25jL8618w9F36x8YS7M9n3RR6zhl0BLots89MBVBgLmZpuMe9oHqiqF5vxDOCZ1Xiv75NofWTKc9/6QGbCHvJqyViXQGdubBl5EFjvXD2l8X7j3ha90kg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: v8: - Ignore the low event count of child 2 with memory_recursiveprot on in patch 1 as originally suggested by Michal. v7: - Skip the vmscan change as the mem_cgroup_usage() check for now as it is currently redundant. v6: - The memcg_test_low failure is indeed due to the memory_recursiveprot mount option which is enabled by default in systemd cgroup v2 setting. So adopt Michal's suggestion to adjust the low event checking according to whether memory_recursiveprot is enabled or not. The test_memcontrol selftest consistently fails its test_memcg_low sub-test (with memory_recursiveprot enabled) and sporadically fails its test_memcg_min sub-test. This patchset fixes the test_memcg_min and test_memcg_low failures by adjusting the test_memcontrol selftest to fix these test failures. Waiman Long (2): selftests: memcg: Allow low event with no memory.low and memory_recursiveprot on selftests: memcg: Increase error tolerance of child memory.current check in test_memcg_protection() .../selftests/cgroup/test_memcontrol.c | 22 ++++++++++++++----- 1 file changed, 16 insertions(+), 6 deletions(-) -- 2.49.0