From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f173.google.com (mail-pf1-f173.google.com [209.85.210.173]) (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 AE5C72F8E9E for ; Fri, 17 Jul 2026 08:52:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784278327; cv=none; b=juZ+l+6Px43CXio9nGzy6z+DC22rrWf40mr2uoe2koETLXgXObTiFdKyIFWUuC8MDQNe1/t42oSpO0lFPlHR9KXcA5xw7xbgkYRSyk7xIedxYLLwO/RnnBmL/66LfzjYCpT61Y4Qz9g7LOFM8mQ82/pYM8tOcNKXqEaAcDZRVhY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784278327; c=relaxed/simple; bh=WlyMPK6R/S/Y1XNv9PKf/FvucUrYL6Wpigd329uWio0=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=DATx9W5vPqDZ8loqJBvA/RwTOhahmvsZV/nzcD1s3ocTJGTpFiyxVJ5Jv1Aq5Qq+El1Qx6omxIHfTKzTF1GzoTm6ix+qgnXqo3RLlDQ8nVJvo4vkIlN0aP0iVab05K6A/kfyAjYMf66+GvqKaNY5mAGKhpYM+PR9m0D6/U7/eSw= 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=eQGS6W0K; arc=none smtp.client-ip=209.85.210.173 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="eQGS6W0K" Received: by mail-pf1-f173.google.com with SMTP id d2e1a72fcca58-8487b7b3fc8so7462214b3a.3 for ; Fri, 17 Jul 2026 01:52:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1784278325; x=1784883125; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=wikoEJgumCogKcLX24y4Zk/ieEahhJU9VfHo8xwaYrM=; b=eQGS6W0KgZmEqr5eamI2ZO4diufPkuNRh34WzUifE+YGRhujyv0h+49SpzNFbOIkhs J825fvF/Lpy8jjdRgkEr3Pi+psnVd9QA7EcRKjyEeQBJwJvDYoBjfK/lx2uHYOiuqE2I 8ZNw9bzHT6oaKFmb78enasfFN+/0wsEQN0jcBfVLbaD1W8jBy4bDf3JXr5/dehT7xI/l KOGsSJ02YmloY3Cr/RAeNz9wNuYwthisqm96aLgPLPzpilgBRmYVVzIRBexWYudo40Se OtyQiBKbULYM/ZUrFljSbF+CyQnAOC8Wt0BnAwTecBoXdNkeia/yHbI08Qg35D2Q/XgM XNzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784278325; x=1784883125; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=wikoEJgumCogKcLX24y4Zk/ieEahhJU9VfHo8xwaYrM=; b=r06QDQiKOYx9DEboCWsPisvlmvuNB5unveD8uhWOGUSl1KdLKY5WQrgevA5GvCJz8U 4XZ2QFJfJtNBQpa16U4y48/SLMcqCgCMD2Recy8Zog3uUBIE8hAc0sKCkggHlk47kHfI PLdDSsNovN6F/Mlb8G/hQu63gsgxzgUlqHt5s1VtNCB/HR2FhPTGM+6BB+VhJaMioj0V Xaz/2me0SCTVelPGp6jYJluZDBLx34ICWQpf5ih7FnV1RLLbGeXh63QBdmXFwJYCyhee FygGpYrx+bbzBVeNql8nk4a1eVN7LeFoCBmWq70zPvLY8Eerg0//JYiKP3TNo1Ypw0Tp yxag== X-Forwarded-Encrypted: i=1; AHgh+RrgTWIr3GZcRCdkKjH+A6xxEZSQnR5cnYlT8muX1ErvwXPCIpKvCC1OiISHWLFSQ/Q9pWm4ilUAuxl5orw=@vger.kernel.org X-Gm-Message-State: AOJu0Yz42vBNUCOqAb790tmd/wgnCTrGX3IrH25e3X3KCLiE1vkKSeSH YUk7ZKeGFpbNdJM8wpaIXsBuj4dB6w8HerehPDtjdWrXcsshxt4rqMXq X-Gm-Gg: AfdE7cn4MEJrJS5v6ki5y4tAWzbZJq4GFnwtrtCt8fG0jbbcepaCcNNYOQGshCWeafg Df++lrZuRfC676Pgr8FYMfHD3fCiIVt6nt4ytlk0DoaKAdDgfEvJ1doeZMQ9KODlAVWA8w4XjkC a6krBkbQjUz+dIGp8O8uAeCKBQ0cIaImZz09wiwBpD6kBVR2wkkYpsp0Wz1XA5qA1VcoHDiqzLQ pT3xPF+5a2BZNeKaOy8u3qmnqmQ/Tnx/CaOwqg2rdTzc/hgcinLJb1zzFxQwULrmfHrLMFmapfQ 4nJFUNWUtNMvQuJsfZxR7JEQwmAZ92px7iQD0ZFF4l2uri/z/M0WI0+1tHj7K68rIKlhPC5Au18 DAxc/s/c8pp3rZS6yWDcgIJeAgA25FJXWaZJuGrT6FI9if9wz1BkOxICMv5WUSNnIcHTGPBgoXI iaJg0Ef5Ki2gH3swWGvGEtLVxeaL8htw== X-Received: by 2002:a05:6a00:ac03:b0:842:708f:39be with SMTP id d2e1a72fcca58-84c292cf660mr1685117b3a.5.1784278324807; Fri, 17 Jul 2026 01:52:04 -0700 (PDT) Received: from localhost.localdomain ([210.184.73.204]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84c2af9f477sm619474b3a.58.2026.07.17.01.51.58 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 17 Jul 2026 01:52:04 -0700 (PDT) From: Hao Jia To: akpm@linux-foundation.org, tj@kernel.org, hannes@cmpxchg.org, shakeel.butt@linux.dev, mhocko@kernel.org, yosry@kernel.org, mkoutny@suse.com, nphamcs@gmail.com, chengming.zhou@linux.dev, muchun.song@linux.dev, roman.gushchin@linux.dev Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Hao Jia Subject: [PATCH v2 0/2] mm/zswap: Fixes and improves the zswap global shrinker Date: Fri, 17 Jul 2026 16:51:49 +0800 Message-Id: <20260717085151.22822-1-jiahao.kernel@gmail.com> X-Mailer: git-send-email 2.39.2 (Apple Git-143) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Hao Jia This series fixes and improves the zswap global shrinker (shrink_worker()): Patch 1: Fix missing global shrinker when memory cgroup is disabled. Patch 2: Extend shrink_memcg() to support batch writeback and update its return value semantics, thereby improving the writeback efficiency in the shrink_worker() path. v1->v2: - Add a reschedule check to the -ENOENT return path in shrink_memcg() to handle the theoretical issue of prolonged heavy concurrent zswap stores. - Remove the shrink_memcg() return value changes part, and include a more detailed test report in the commit message. [v1] https://lore.kernel.org/all/20260714081510.16895-1-jiahao.kernel@gmail.com Hao Jia (2): mm/zswap: Fix global shrinker when memory cgroup is disabled mm/zswap: Support batch writeback in shrink_memcg() mm/zswap.c | 60 ++++++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 47 insertions(+), 13 deletions(-) -- 2.34.1