From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f174.google.com (mail-pl1-f174.google.com [209.85.214.174]) (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 B86971EB48E for ; Thu, 1 Aug 2024 03:00:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.174 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722481236; cv=none; b=ZbKj70jndO0aUeomPfXZfU2vP50sou4QXIg/6uoqprEaLG5sf8UMk8KArOZvL6CsTJ/b8SWsaw/i+UFZUHg19049MYaiuaylsIt0McYd5ulhaBmfLRsfdhtM+4UKy3jxKXJAmOYuUJe96MJeL5G+HCmZZs2WGqSnSY5OQJHlr8o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722481236; c=relaxed/simple; bh=MtUmmq6yBKso5i9314S6d2IiMTs1j2Q0wK20x4d/9iQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=pLyDhbf5jwbMMLOjjPuEp4zSvtrM7O9ESIJEAqL4BlasSKx3xIzNVyVj4eqXHBv3l2PTxhn2UuR0mrFjx/K/ZfqxMEAtR7kbmO5wPKzwD9vZuBBwseaUEKGDZhhmWpn3s1H2rWSJJb1mNz+PYJF3/rY+aKvZFfQUBcrCwIUNcqI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=mQT+69gV; arc=none smtp.client-ip=209.85.214.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="mQT+69gV" Received: by mail-pl1-f174.google.com with SMTP id d9443c01a7336-1ff4fa918afso1242105ad.1 for ; Wed, 31 Jul 2024 20:00:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1722481234; x=1723086034; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=MtUmmq6yBKso5i9314S6d2IiMTs1j2Q0wK20x4d/9iQ=; b=mQT+69gVhQp4sGx/ZRa+MZaREoNAMoTq1c4hlq3C8/uanKWOVkTf205EaprCI2JaR/ ZWEl1RHoclMgrJuoEuTyaT59B6MgV7j+eqD1OPYrmQu9oWCelkF5IG6FRFL/bTxfsQHX PKDRqNbkliTI2DGgbzYqS+vhv/BVtzQs4YupA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722481234; x=1723086034; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=MtUmmq6yBKso5i9314S6d2IiMTs1j2Q0wK20x4d/9iQ=; b=U3VHJFVYl5CQ5yMIjOvrXIuPYqLKJq+xXRygSaRgbn7S+/kkcODkdEjdzYDF79vlky /OGsbrGhqHobGyGdptwTUpJLGtCMBW05e9kEPRobwx7BrFn+h9x7gc6rVE7IekmWAmzF esf9MjzYvJNh46MAhe8NOvQ0zo9jOPDxE9RY7mk9SAYRFmDBx0SB0ueCcUNBEv7l8U5p GP7HyLHVjaWywZm8OnLVW2l242QgOx2I/bx3l5CheTEBEwyD673wd7YbXpcB0WW5VWIf pAi2qyU/VtqRoHQgWXQJ3p3JXvx6m1PZGrvHSNMTI0ru6wpTal2Roqj1BjXmuegYfvUZ zpsw== X-Forwarded-Encrypted: i=1; AJvYcCX/INa4/t/T5FbOIYiXrti1yfH472IUsr7E9Gn8bDtm0l3i+KWpYYM14QsWsfLf9Qn0ZZ2YPeR4mzsu/BztoZZKs0r48D7Qi6PbuGV1 X-Gm-Message-State: AOJu0Yyx3opHf8On4uolkMr9mLw7BE17VdBvWTmZbpPLPyhc0opO5ywu rhl5XDE4lrNgcMU1f08fx6GONtpJtj/QojT/TC+aDqf+pn/n5qzc0FX3DU+Y8A== X-Google-Smtp-Source: AGHT+IEsL5Gq87v+qEaRs11Lh5ivrXrJeRxCteG3ySDGaOUjRhYKO6M9k3ESlfLcaLBWZq3GDDRxCg== X-Received: by 2002:a17:902:e748:b0:1f6:fcd9:5b86 with SMTP id d9443c01a7336-1ff4ce4645cmr16096285ad.12.1722481233993; Wed, 31 Jul 2024 20:00:33 -0700 (PDT) Received: from google.com ([2401:fa00:8f:203:153:1133:6aa8:dcc7]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fed7f67528sm127081175ad.227.2024.07.31.20.00.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 Jul 2024 20:00:33 -0700 (PDT) Date: Thu, 1 Aug 2024 12:00:27 +0900 From: Sergey Senozhatsky To: Nhat Pham Cc: Barry Song <21cnbao@gmail.com>, Christoph Hellwig , Matthew Wilcox , akpm@linux-foundation.org, linux-mm@kvack.org, ying.huang@intel.com, baolin.wang@linux.alibaba.com, chrisl@kernel.org, david@redhat.com, hannes@cmpxchg.org, hughd@google.com, kaleshsingh@google.com, kasong@tencent.com, linux-kernel@vger.kernel.org, mhocko@suse.com, minchan@kernel.org, ryan.roberts@arm.com, senozhatsky@chromium.org, shakeel.butt@linux.dev, shy828301@gmail.com, surenb@google.com, v-songbaohua@oppo.com, xiang@kernel.org, yosryahmed@google.com Subject: Re: [PATCH v5 4/4] mm: Introduce per-thpsize swapin control policy Message-ID: <20240801030027.GE16599@google.com> References: <20240726094618.401593-1-21cnbao@gmail.com> <20240726094618.401593-5-21cnbao@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On (24/07/31 11:35), Nhat Pham wrote: > > I'm not proposing that we kill zram right away. > Just for the record, zram is a generic block device and has use-cases outside of swap. Just mkfs on /dev/zram0, mount it and do whatever. The "kill zram" thing is not going to fly.