From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A088743DED9 for ; Tue, 13 Oct 2026 04:31:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791865913; cv=none; b=sos3+/3djVacaw7rnPNZJVjN81t+Lh9Dyjn6vV8XQ0iG6scrli2ZmMngi9kiw7wB1zx2yYQ9g3JQt7d3ynRlLFsDfhoodU/P1CyRq0xCzkn8UsZEtr+9WBX7Lnl0A8J/u/2/gF+L2hrCZzfkwihBtp+uil0b6kfy/imO7pz4olQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791865913; c=relaxed/simple; bh=do2kElKNfWkDR8V7B3Mn9B7Xo9jPvHPLihd8iKGSmfw=; h=Date:To:From:Subject:Message-Id; b=i1UgR8hslplJFoIGRAT2MCzIlGbQaTX8Z8i+HlYixl+YAxe1OfHLGchWon2BT6pEbWiFVE/ueBjVUgFFDlI4Uyx0gQGRRIfEq73rZz+ALFeA9yqoB1lteC4zG+2/W53GZN8EzsTzf6OVeEWl56gUxzsqqZva3FR6+dCsILCqONQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=TugmiMLR; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="TugmiMLR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A7E51F00898; Tue, 13 Oct 2026 04:31:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791865912; bh=fNdcQAVuS7A4n4x9qCrA3AoGjoOFCuVg92d1MNz/PYQ=; h=Date:To:From:Subject; b=TugmiMLRIHMLswNDrQzpPYPDAcP0HHPblJEmaflNFKsZ47STV4Mot9Fp6vaLjQRDc UObEgM92bttPEyQl0CVWfRTP4hucOm9ubM0FIqwTjBEFWT20vZPWTK1n65P3DCWwkl xbQTEKE1ohHANIwqWpFTkfuQKz3JKpMOq9Rwq66c= Date: Mon, 12 Oct 2026 21:31:51 -0700 To: mm-commits@vger.kernel.org,zenghui.yu@linux.dev,vbabka@kernel.org,surenb@google.com,sj@kernel.org,shuah@kernel.org,rppt@kernel.org,rdunlap@infradead.org,mhocko@suse.com,ljs@kernel.org,lianux.mm@gmail.com,liam@infradead.org,kunwu.chan@gmail.com,eva.kurchatova@virtuozzo.com,david@kernel.org,davidgow@davidgow.net,corbet@lwn.net,brendan.higgins@linux.dev,aethernet65535@gmail.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] docs-mm-damon-design-clarify-when-qt_exceeds-increases.patch removed from -mm tree Message-Id: <20261013043152.3A7E51F00898@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: Docs/mm/damon/design: clarify when qt_exceeds increases has been removed from the -mm tree. Its filename was docs-mm-damon-design-clarify-when-qt_exceeds-increases.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Liew Rui Yan Subject: Docs/mm/damon/design: clarify when qt_exceeds increases Date: Mon, 14 Sep 2026 07:19:50 -0700 qt_exceeds counts how many times a scheme's quota has been exceeded. When using the temporal auto-tuning algorithm, the effective size quota becomes zero once the goal is [over-]achieved. In this case, the quotas are still set, so qt_exceeds keeps increasing once per quota reset interval while the goal stays achieved. Clarify this behavior in the design document. Link: https://lore.kernel.org/20260914141952.91465-6-sj@kernel.org Signed-off-by: Liew Rui Yan Reviewed-by: SJ Park Signed-off-by: SJ Park Signed-off-by: Andrew Morton Cc: Brendan Higgins Cc: David Gow Cc: David Hildenbrand Cc: Eva Kurchatova Cc: Jonathan Corbet Cc: Kunwu Chan Cc: Liam R. Howlett Cc: Lian Wang Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Randy Dunlap Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: "Zenghui Yu (Huawei)" --- Documentation/mm/damon/design.rst | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/Documentation/mm/damon/design.rst~docs-mm-damon-design-clarify-when-qt_exceeds-increases +++ a/Documentation/mm/damon/design.rst @@ -696,7 +696,9 @@ There are two such tuning algorithms tha fast as possible, using maximum allowed quota, but only for a temporal short time. When the quota is under-achieved, this algorithm keeps tuning quota to a maximum allowed one. Once the quota is [over]-achieved, this sets the - quota zero. Useful for deterministic control required environments. + quota zero. Useful for deterministic control required environments. Note + that the zero quota is a valid quota, and therefore ``qt_exceeds`` :ref:`stat + ` will keep increasing in this case. The goal can be specified with five parameters, namely ``target_metric``, ``target_value``, ``current_value``, ``nid`` and ``path``. The auto-tuning _ Patches currently in -mm which might be from aethernet65535@gmail.com are mm-damon-tests-core-kunit-add-test-for-unconditionally-skipping-the-last-region.patch