From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f182.google.com (mail-dy1-f182.google.com [74.125.82.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B927D279903 for ; Mon, 9 Mar 2026 02:34:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773023690; cv=none; b=BybFrhuUlHazH9j6aLEexZYThbDzZ5vGSYPOYhFdbqAw2doDYLYFBgD3BEebhzZTU0kQWo+gJaIQIthd2eHEDlCIC9XfCVqPq2zO40S4q8VXut+uVJQhp2HohiWrKLsmDObZLmo+wxZcqkSX/bGz1hC66g/8jULfGGdSktV1m+4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773023690; c=relaxed/simple; bh=/eGV/1xbIJhwm6XIn7cfQH/SY3x1TXbIwB1K2JCBqls=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UMuzbQ97ZevCszeoLrUAaeU+o4D4CjRx3QhJRdh1A2Nh9aCJ6S8Ud6AmCQ4ObOAQX5HMdR2kfNwZZgEl5dNIE2nCZRoowP8A0jwlZf6jJU0qJkaZH/CPPOhvWz/PS6fW90cmSEdJbidfuhLt3Z93QibHYjCLsfsbdgOtDvpT1ok= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=AlNgRc41; arc=none smtp.client-ip=74.125.82.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="AlNgRc41" Received: by mail-dy1-f182.google.com with SMTP id 5a478bee46e88-2bd9a485bd6so6636603eec.1 for ; Sun, 08 Mar 2026 19:34:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1773023687; x=1773628487; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=rEBd1cs2oe7i2LMTBttxBgMKfH6i4xUsDVFq4wSxJlE=; b=AlNgRc41hJiiInX17wTb/Tywg+AiCdlCt0VQSHL59Ii4FH+Yx6VO+HmOhinB+E5XFR 4Mn2Bh5sgtu0Ur3AGts8ERo5WIgVz4LkjN1SrmbxDxBuZhgBvLCJRfZl+ZY9Y/FBeQ/3 c0JFLma7EYQJRe7lnjhAYMoDZrGmWHuoDazuZPvTyWbT4ACHfJulY2L0FZufWuoIqZ6h Tjcc3z61pyh+r8ozHsNJahZivCcC3+/Wr5ndOO7lYEshWIwvse7uAoQuGriiu/e1+7ub WorE7Nr/nYaDLDzzu8s6/wns1EZuBfke1N7onND0zmt4uk9uQ09Lyetp8Fmekk/GkAaM OWUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1773023687; x=1773628487; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=rEBd1cs2oe7i2LMTBttxBgMKfH6i4xUsDVFq4wSxJlE=; b=L8ruJlqysgRXDVb9ZZ3rGk1r0sErb6JcYjspnMrunEZMq3mL3z4uxEDwChGOOki2lu kSIoqr+CNBxymJMiLfYOK9xp4W5i4/AKj0Per2BGulN4WL61owiqYuvVr5I54rDIb1lq 0W+5HCtLH8i9GTcfjrMBVQ/TPDrthmaxqkRSI2+G+z7QV6KrJqWpQZ2byc4pssDQOgLd tXVN9JbHxJMSkc5L0yrc9ICOfQd+TTXGwXHu+FQsKS4TFNvzx538rS8o7EmIXH4JJia7 gc94MjNRYCNNFyHzaRrMMh+fouqcCzgMADqzjtsHyJnzIpp0XavfO2+B58IhvW6oMcn0 f2Vw== X-Forwarded-Encrypted: i=1; AJvYcCUAU9+mNBhxHZOQzIRfA2cIxQHtB3Wmd5YZHDcwqTpURXJRfzfGYKavgS86nNUdGkJ5agtVQiGsaLaAqRQ=@vger.kernel.org X-Gm-Message-State: AOJu0YyDbLUiakw7LT2ZTMUV20uPjSlJs7ZYnrrLUG5B8drv0eShtMdY 4qs67oIf+13g3jUo1fz1AcGg2cv4mOb3ykN/SRRQvgKNmdm1P2OdQvtH X-Gm-Gg: ATEYQzyLuRIsWWlKWPZ3B9/sO+eiQYsXoE8cls0gGAiArF8VZJ50Sre4PxYR7Q6VTkN eYAfp+RDZFnpkOgJs/Wkl4ZLPHIhTaXAi+uSzOg8YgcaVI4+uzgLl8Pm6UV3k0HqupYEvBdUM95 QiubO13Ah/zzh+yH8Cbr7mKfCGsaVtCBaZGilPc1Gawce+ANZgcWz4EwTN38G5Pc1FoEJ87CW6z UY0mUj3W/gAVdBsc+mg8c/RA7eiXF4G6vWQqF6tzzFCdFlq1P9lbyoMaWjLnao9UMJ0t04qWwsE tovCti4cRgIRy6rdbyBXRtnqUMAzdJgZA9UhQWpf3h0b87pIkEn22FfhKuQ03TgWofs6K7PWow8 V5GwgbKzw3/TsBUmdkByOpQzx32fvAhIi1EISJy7TglnJAXqSekR0RuifBZPDB5kAhYmRxc7+eD dHA695MQDbYYx1JZp8gprEsBoMl+e+iXh2lig= X-Received: by 2002:a05:7301:3d1a:b0:2be:fe8:8aff with SMTP id 5a478bee46e88-2be4e03b3ebmr4076299eec.18.1773023686622; Sun, 08 Mar 2026 19:34:46 -0700 (PDT) Received: from localhost.localdomain ([104.28.165.128]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2be4f80cc1dsm7076193eec.3.2026.03.08.19.34.42 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 08 Mar 2026 19:34:46 -0700 (PDT) From: wang lian To: sj@kernel.org Cc: akpm@linux-foundation.org, brendan.higgins@linux.dev, damon@lists.linux.dev, davidgow@google.com, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, wang lian Subject: Re: [PATCH 2/7] mm/damon/tests/core-kunit: add a test for damon_is_last_region() Date: Mon, 9 Mar 2026 10:34:06 +0800 Message-ID: <20260309023406.9784-1-lianux.mm@gmail.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260307195356.203753-3-sj@kernel.org> References: <20260307195356.203753-3-sj@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit > There was a bug [1] in damon_is_last_region(). Add a kunit test to not > reintroduce the bug. > [1] https://lore.kernel.org/20260114152049.99727-1-sj@kernel.org/ > Signed-off-by: SeongJae Park Hi SeongJae, I've been following the previous discussion regarding the bug in damon_is_last_region() where the arguments of list_is_last() were accidentally swapped. I have verified this patch by running the KUnit tests on my arm64 native environment. The damon_test_is_last_region test case passed as expected, confirming that the fix is robust and the regression is effectively prevented. Tested-by: wang lian Reviewed-by: wang lian -- Best Regards, wang lian