From nobody Mon Feb 9 05:19:22 2026 Received: from SHSQR01.spreadtrum.com (unknown [222.66.158.135]) (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 E037642AA9 for ; Thu, 5 Feb 2026 06:46:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=222.66.158.135 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770273966; cv=none; b=W27h51tIp+6GGYaE6fKR663mXbZLJ4XpkLd0AfAxCTDJeidNJQQkjO7zPmxfVxI5BCOXtpR9cC9rhNFtLzGkhVYYZm4VDFnVhq4zXuDXngFU7PDftQjs2dkCjOmZHlDJsbVxJrhB4WIb0LIAZEtRv5kins5EZZlcHNWvEEyEhso= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770273966; c=relaxed/simple; bh=vG7qheVKY5+LLoB2Yk2S1BYJ0YJ6VMpX7rVrOaolKw4=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=E2isTr5jgxbhpA/60Hd2EjWEzp5GGrKdIJFpm1UmaonPxEnFL6j4ZyIFEVk65Urwq/G9/Y93pfW6Y0f4liqzkY89IxPurGE7iByWOCx7WzMfdoUz68Tea0bAQnMAZKTHGII7qkMXqfICS9lajj1HrxvFhM/VU+Ha/G5qFtzdQ0w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=unisoc.com; spf=pass smtp.mailfrom=unisoc.com; dkim=pass (2048-bit key) header.d=unisoc.com header.i=@unisoc.com header.b=VWBY12cS; arc=none smtp.client-ip=222.66.158.135 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=unisoc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=unisoc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=unisoc.com header.i=@unisoc.com header.b="VWBY12cS" Received: from dlp.unisoc.com ([10.29.3.86]) by SHSQR01.spreadtrum.com with ESMTP id 6156jg9c047526; Thu, 5 Feb 2026 14:45:42 +0800 (+08) (envelope-from zhaoyang.huang@unisoc.com) Received: from SHDLP.spreadtrum.com (BJMBX01.spreadtrum.com [10.0.64.7]) by dlp.unisoc.com (SkyGuard) with ESMTPS id 4f675X3nfcz2NcFwK; Thu, 5 Feb 2026 14:45:36 +0800 (CST) Received: from bj03382pcu03.spreadtrum.com (10.0.73.40) by BJMBX01.spreadtrum.com (10.0.64.7) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Thu, 5 Feb 2026 14:45:40 +0800 From: "zhaoyang.huang" To: Andrew Morton , Yu Zhao , Michal Hocko , Rik van Riel , Shakeel Butt , Roman Gushchin , Johannes Weiner , , , Zhaoyang Huang , Subject: [PATCH] mm: bail out from partial cgroup_reclaim inside shrink_lruvec Date: Thu, 5 Feb 2026 14:45:28 +0800 Message-ID: <20260205064528.32794-1-zhaoyang.huang@unisoc.com> X-Mailer: git-send-email 2.25.1 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 X-ClientProxiedBy: SHCAS01.spreadtrum.com (10.0.1.201) To BJMBX01.spreadtrum.com (10.0.64.7) X-MAIL: SHSQR01.spreadtrum.com 6156jg9c047526 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=unisoc.com; s=default; t=1770273954; bh=7NK/38HffDiaa77CWAYEU6e56op6bsxD1z5sc9Ob4SM=; h=From:To:Subject:Date; b=VWBY12cSctWhVMIUcY8BCqW8NocjBNMiUw3Eg3gMaIzcqyrjrzXmRKGkv5VMzdVl/ L2e7W3mCHSv8pKUbfrRrfDn7yp/Ms4h1NChzUcpTAd7imhEEvJtk1KEy65fulSgt2j kKa8pIIdlf4JKZmPTS3aZ+FdcdERxsq+9hkVXcNtUziyvyFNS9U7nRrpHzkTpl5I0m aJ/6Q0A92u24r35cDcc9Gwx4liHuMb/HoPRpsLcGmbpit+p/uj7Fo8w3AwR8K3+V5K m1IwH+MKkiDqR9PfX+PtBnGg3VCbFeKkp50nOD9MJmXCA4toe9GlU1yWSjB6yVXqro iZ0KmTxacII5Q== Content-Type: text/plain; charset="utf-8" From: Zhaoyang Huang Oversize reclaiming observed in "echo xxx > memory.reclaim". This commit would like to sync the stop creteria in shrink_node_memcgs to shrink_lruvec to have partial cgroup_reclaim bail out as early as it can be. Signed-off-by: Zhaoyang Huang --- mm/vmscan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 670fe9fae5ba..03bda1094621 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -4832,8 +4832,8 @@ static bool should_abort_scan(struct lruvec *lruvec, = struct scan_control *sc) int i; enum zone_watermarks mark; =20 - /* don't abort memcg reclaim to ensure fairness */ - if (!root_reclaim(sc)) + /* don't abort full walk memcg reclaim to ensure fairness */ + if (!root_reclaim(sc) && sc->memcg_full_walk) return false; =20 if (sc->nr_reclaimed >=3D max(sc->nr_to_reclaim, compact_gap(sc->order))) --=20 2.25.1