From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from xmbghk7.mail.qq.com (xmbghk7.mail.qq.com [43.163.128.50]) (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 04EDD2741A6; Tue, 18 Nov 2025 08:21:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=43.163.128.50 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763454121; cv=none; b=Qvw2RJpwO7WiES0KM3TLIqJJQkMyExdLgnhTyVvQOogIED5ZOOLfQ5zfU98L2N5pMtkorqXk6ZwFbh+jHr7JwMp6S/1bHvOeXmGAipT/3K64UleK1/4kRhXx7vhCNvbabr79zfQjZFxbwQYmCbV5HsCThmzFiCp68ZWgh7Ni/xM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763454121; c=relaxed/simple; bh=D7DPGFKVy0s48PVy6E1rMZw7G6d6Aqidjr0SNy6c4rg=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=M/3b0tcH8WgY5FKM66sLtdJAybDbU9+DosrPgdVImSTalYFd5HnDDN8TRikY+PoRMhJV6GAuyOYfSCSWlW3A4yH/uqu6OCEctNojdaEEmmL0bdX75eomGSHsjkijLCRSyCjbnp9ITY+DJnFkPCiuMn1KecJJwObcpNR0BUJWFG8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foxmail.com; spf=pass smtp.mailfrom=foxmail.com; dkim=pass (1024-bit key) header.d=foxmail.com header.i=@foxmail.com header.b=lDJcrCbG; arc=none smtp.client-ip=43.163.128.50 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foxmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=foxmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=foxmail.com header.i=@foxmail.com header.b="lDJcrCbG" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foxmail.com; s=s201512; t=1763454111; bh=D7DPGFKVy0s48PVy6E1rMZw7G6d6Aqidjr0SNy6c4rg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=lDJcrCbGDutEvKP0OiWcrR82AoANoNRq6lwhx93tbn72Yw18s4at9aUs8muSDR3Cj a0hK+a7an92X+eNM5kJT8kFYxBgJO6iifM7PFVbuu0NdbVpICmhw+llx2BjCbW6ntK h26kMM02Pc1xx3YpTuBsI0BAOK9Bs6vQDDCikCB0= Received: from meizu-Precision-3660.meizu.com ([14.21.33.152]) by newxmesmtplogicsvrszb42-0.qq.com (NewEsmtp) with SMTP id 57003039; Tue, 18 Nov 2025 16:21:48 +0800 X-QQ-mid: xmsmtpt1763454108thf7bnbho Message-ID: X-QQ-XMAILINFO: MwSgv9IoJFr1DNKAPmLPPGkCSjO832gac+Nkob40cHLFFVFi6viG110AHX/lJk MR9qQ2zKu7uIFRMc0T2nSW+57D3Xe9ulEwPrRvi2gv5kXyOgECUdJZMP6ZFF4dd4F0l4HiQwiRKe DEjO+5Kq4SRUfaM99XGjI6gBcOhYjnfJ28Alr++Rb/wQPQdcmA0MZXEK4V5CKM7+Rh9TLsLEOi8w CSj3lokmibcIMtWKnYaEkT9pDVj2hACBQJS+XhSoa9qnmhE0tWOoz1IPXyKUlXZgCcnPVRkcMi6B P4f1OgVdTiRqfxUzfjAfmYhWBsyNNjY/k6OTMZUVoLgB7+XKC3f4EqkwAjQdQHQ6Hcj4G/1cmSn/ jXmuM2D8gELGqM+BoRv/RzhM2hQMX3Z9kOuTMsWVBpimU8T9BjAikA+UibiSG3VjZsDkvaVs6qTF l/LBgYw9bnZ+D9LmrEP3kp9Ryv5SZyMvPZiQevfFPCT+Gs1Vlq/Kv0NxdgRUZuZn/+P3ZR5z+DFr m5SJFlyCfLOfov6ubPg0pZwmpU7/s0Mqc/KEg5lEWXtafAw7zCBOLK8fn3LI8yEpc/COCBSA2Gf8 VQJ1hetHYzQodeBFtOdu/TbWi0JZ17Jfh/owuCMAAvl/gGZDlbZtE0nJma+jjBgoxL5OrQ6Uerd2 W7Tp62zENKbTQyhmkbxHB47XkK7dlmLfxmWD90aIa8NkwxpUH3+pCKwxeaHNOCL1HsX6TcBXUxOd Z1fhagpZzP48TMF+8Uk0OuFY2TA7OZAn075dA7PKgnEO9nB5laVJTllbXne5INMGGwiO0EqECSBG T45OrFcPAmuOzP2LSGkXuJrjq6JJyC0Ia0N+LknC3nRjexvrnPxGMTQnIi3b2OYiRdoKqC1PqbX3 XXW6k1K11kHfw5XS0C9YcKZYdC2ihpP5N8FA//xG6HHbX6MlPB6sCp82Q64e5UI4pCSYTH+fboEt GMZJZR36Wy73ZU0FtKn+Li+/PbHZwWnOw5T6PjoZ4WzIz9zEEW8ZwMXiWDP402DsbRP4oITO/ynS 9UtWqZBjwN+45cspLEDMXV/jQM3iEoZy6XjAyNxqrcedUqEsEyAnwSp+X1tpaFHXaB2eVlo1y07i pKFvll X-QQ-XMRINFO: NyFYKkN4Ny6FSmKK/uo/jdU= From: Yuwen Chen To: senozhatsky@chromium.org Cc: akpm@linux-foundation.org, bgeffon@google.com, licayy@outlook.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, minchan@kernel.org, richardycc@google.com, ywen.chen@foxmail.com Subject: Re: [PATCH] zram: Fix the issue that the write - back limits might overflow Date: Tue, 18 Nov 2025 16:21:47 +0800 X-OQ-MSGID: <20251118082147.2809308-1-ywen.chen@foxmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On (25/11/18 15:39), Sergey Senozhatsky wrote: > I really wish we could just change wb code to use PAGE_SIZE not 4K > units [1], unfortunately it's probably too late to change that now. > > [1] https://lore.kernel.org/linux-kernel/20251110052741.92031-1-senozhatsky@chromium.org I've taken a look at the patch you submitted before. This is indeed a very frustrating thing. I'm not sure if we can make the change. If we can change it to use PAGE_SIZE, it will reduce a lot of unnecessary logic.