From nobody Sat Feb 7 15:10:16 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 073FB392C54; Tue, 13 Jan 2026 15:27:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768318052; cv=none; b=susgRxgW00og74hjVkYmUHA4QDMua9Yu/eGNSG38YaphEUTgLX5LRna/HKJ+M+36Jsjy/5LkqPS4Hgu7eF6+lpLf/0scy7C1DpzyJPg933IuPGEeGdedFtg5cE6FHHtapRO043k04kp7Rt4xDRmYl0T3QYQEqC0x8vL4CkVjN1o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768318052; c=relaxed/simple; bh=u9BpClkZFdNL3P8/T2nVybp/XhQM1COhsP+bLP+TFE4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=txziZMoNfLBU2KMOEeVMtUsxnsbqamQTT1FHVSEJ62L4PUqWcyqKJdta820MCcXEGHMxJGlLxH054ZZhB+nwuuS9mI7nzG54p10kSpM2qDPYZ5nL9hYm0z/2Pd1w9kNPo/82EZqmBIPq0ryZvYSlfWpnhKfU4zOe2i9oFWiA0Y4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TQwLD6Yq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TQwLD6Yq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C3778C2BC87; Tue, 13 Jan 2026 15:27:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768318051; bh=u9BpClkZFdNL3P8/T2nVybp/XhQM1COhsP+bLP+TFE4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TQwLD6YquT6NgnNQ84Kx8u7TWgMhbpMmt3X9fEodCwRYUsC9TaiBlzVw/KmPmmtNw 1uII382sK4yne5J+fP75WQWpKjrs847Il9tU6TVwhj3ZkqWDU6trZ9l3kTyh6RFVZq vbbSqe4dEk1gvxU4hzdxMa+eAzna3Z1H6u97Y4GII2PQoTkUBtfPxzGq485BQxg5v6 Ega6oOwSY7lWyVFPh42UnaMj5FH8ZKnGua+4N/yiHbsxP8nVfQoHX5COyAAUeQOpr7 +F6Wa14h2HHNqnQ6QnbYITbui3f1pqJa3v/SGtfPe8MpJL6zoDbGhlWgv9IwAqNkFZ SGvlIBXdiA08Q== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 05/11] mm/damon/lru_sort: consider age for quota prioritization Date: Tue, 13 Jan 2026 07:27:10 -0800 Message-ID: <20260113152717.70459-6-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260113152717.70459-1-sj@kernel.org> References: <20260113152717.70459-1-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: quoted-printable Content-Type: text/plain; charset="utf-8" DAMON_LRU_SORT is doing under-quota access pattern based regions prioritization using only access frequency. Age of regions is another useful information for distinguishing hot and cold regions. Use it for prioritization, too. Signed-off-by: SeongJae Park --- mm/damon/lru_sort.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/damon/lru_sort.c b/mm/damon/lru_sort.c index 9388b091deb7..a74c4ec170a9 100644 --- a/mm/damon/lru_sort.c +++ b/mm/damon/lru_sort.c @@ -71,7 +71,7 @@ static struct damos_quota damon_lru_sort_quota =3D { /* Within the quota, mark hotter regions accessed first. */ .weight_sz =3D 0, .weight_nr_accesses =3D 1, - .weight_age =3D 0, + .weight_age =3D 1, }; DEFINE_DAMON_MODULES_DAMOS_TIME_QUOTA(damon_lru_sort_quota); =20 --=20 2.47.3