From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f46.google.com (mail-wm1-f46.google.com [209.85.128.46]) (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 7CD70361DD0 for ; Tue, 24 Mar 2026 13:19:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.46 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774358384; cv=none; b=MQxE20bNa5mOs2ZydzQmHhgtlyoQACIYqgeX/Zb+RFvK78GzalxfWXUAGZWQ9zAg8EaYYMULBZ1jsT95VlTlThepyktnR9sUIQsodgCoL3Kxb8cbzPothuhMfeG/r1mUQr+IK/BVmXcWuBc7YeBqTKAfAQAouLx0gyQqlAizE/4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774358384; c=relaxed/simple; bh=V9oMmKBuAy0HzNU9dHvJsrEVQ950oTkPENYiU9M38dY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AyA8ymlmdWHqEBEalFfKo7PsOQFIX/hT+a6rw+B+kE/6C9lc2AjDVtMuSsf2/rmfUISqNTXK3YjPZ3K6UOJpj1ekKdnw1T97julatQ4nYF2jlFg7bH5OuyA8S+8i5UVUeuMAHYJ9S5+QuwHI9pMN8EWDwsQG9tbjceDIePcGyXM= 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=AZLBQI/n; arc=none smtp.client-ip=209.85.128.46 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="AZLBQI/n" Received: by mail-wm1-f46.google.com with SMTP id 5b1f17b1804b1-48702d51cd0so38745095e9.2 for ; Tue, 24 Mar 2026 06:19:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1774358382; x=1774963182; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=hDW9QxylvtudolC4OrULLL0I8iMCwV1m1od/FFAOgBU=; b=AZLBQI/n+B8UQ4z/PBbbRta7WCkJBhIqf3t/ICJs39g27m1N9Qrdtn6b1Ql6lHrDN9 plFbuZcDzjwS3556cyOQBHeMrKSy9RpbOH3fvO0hsgy+iMAhnlJFHQgeGfiUwKz9MgeU rWoNt3C3hwxsyqGLHBb14NxaVWtCHUcqeNDe144p+yucaoAtspkoTpYAajWyt7FMIPxt 2UklR6rODfMt/q/bNs84cmy6iSxqHQkoyEQrIvUuAHRUXwGzCHnxjsDsuN1FA1cJWPQ8 Zvc7NjeF2RATIqk5C8e8snnd1qvtL/zhJZl9Ntlgr+0NmKmg0i9poPa7lttRZFB4vgNZ NQxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774358382; x=1774963182; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=hDW9QxylvtudolC4OrULLL0I8iMCwV1m1od/FFAOgBU=; b=lXWmnzQQpXzwA00pwDh+8hAtTyg8P9iErtILRhxZuXmFb1O7NH2kPO27vtBuxK8v0w 3VMi1hT/8zS9N4cexEB9YciqqMlrAOPoM5rRRHKVUzG3Mjbl1bfFrnkwh0OPoavAMQoO uvd3ipVBlfLKh6C6c/Ndm0PLtUSS06r2/aVh80PgOsMl77BjwbaSjfujQIn9hWFwZ7h+ xT14OdgoWr0WZvnBTOz67TQUWfUctEmN8wWFVhMAjzWWJSyLvJZ6WQKtS4YTBKBytGBv Jh/zJ2DrCvXG9FF6d82vErLjJH0CObwsxH63XmavqDzahdhpvFEgboAH0SekZQZ3bP8Q 5lHw== X-Forwarded-Encrypted: i=1; AJvYcCU6nzWBNSaB18zhxn+Z8mdcNYdo9NrV0M1MSRYInzojKCKq/sD2cyA2EmzMOvsACB+veYcD+6xwpKA=@vger.kernel.org X-Gm-Message-State: AOJu0YxbZNV10BuK0FERO3NSEw6sjSkZytMI78NcmKsqCSzpVApTCiLf nYWqHe+Lfpap4ulybDpcW1d+c66tqt+pnOULnX7v0JL2WkoaxPaIqIc1 X-Gm-Gg: ATEYQzzBQr4/+snqDo6QnqlPXLQ8rKnSPArwaMqflbkPQ5CsoMv9nX057sB2J5a5wQQ OfXvdviOZ7AQ9PVscsUvGmKvvGF/yXTpCBmJm68QCqXuaCvL7MOpWOwDbZn14mUPwX3kWUjh7Tl 5WujuA1HhTJiQTRbkfj8tcGfpNdyyNPzX7QDPoBcNTtlF/Jy1owsey0OXZfFfhSSBu6cI48YiWN flayqLdJSdBoze439yijm+klcC29l6Te/HY/XqEhckQBXzW6Rdhx0V2NzZ7orKLuqSnPCuENTxb /+8NWet3S5Hcvj3ysHN31sc9QZbJoceLRzWBEJP3wES7wtAsqc8sSp9FSeu0ttQkXZ1+SscL6vC 93oDIBI9Lh2AFmDB/daqxfxLlvKRLr1B+geF4nOhQYyue6JT67IutxP7UheAcPSd0a4zsxHfmsu FQuyzy2cp4gbi8RqaeZ+c= X-Received: by 2002:a05:600c:1c16:b0:485:39d4:2dd9 with SMTP id 5b1f17b1804b1-486ff04fb4cmr260524475e9.33.1774358381485; Tue, 24 Mar 2026 06:19:41 -0700 (PDT) Received: from localhost ([212.73.77.104]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-487116939b8sm77926095e9.3.2026.03.24.06.19.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Mar 2026 06:19:40 -0700 (PDT) From: Askar Safin To: nphamcs@gmail.com Cc: Liam.Howlett@oracle.com, akpm@linux-foundation.org, apopple@nvidia.com, axelrasmussen@google.com, baohua@kernel.org, baolin.wang@linux.alibaba.com, bhe@redhat.com, byungchul@sk.com, cgroups@vger.kernel.org, chengming.zhou@linux.dev, chrisl@kernel.org, corbet@lwn.net, david@kernel.org, dev.jain@arm.com, gourry@gourry.net, hannes@cmpxchg.org, hughd@google.com, jannh@google.com, joshua.hahnjy@gmail.com, kasong@tencent.com, kernel-team@meta.com, lance.yang@linux.dev, lenb@kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-pm@vger.kernel.org, lorenzo.stoakes@oracle.com, matthew.brost@intel.com, mhocko@suse.com, muchun.song@linux.dev, npache@redhat.com, pavel@kernel.org, peterx@redhat.com, peterz@infradead.org, pfalcato@suse.de, rafael@kernel.org, rakie.kim@sk.com, riel@surriel.com, roman.gushchin@linux.dev, rppt@kernel.org, ryan.roberts@arm.com, shakeel.butt@linux.dev, shikemeng@huaweicloud.com, surenb@google.com, tglx@kernel.org, vbabka@suse.cz, weixugc@google.com, ying.huang@linux.alibaba.com, yosry.ahmed@linux.dev, yuanchu@google.com, zhengqi.arch@bytedance.com, ziy@nvidia.com, Kairui Song , Matthew Wilcox Subject: Re: [PATCH v5 00/21] Virtual Swap Space Date: Tue, 24 Mar 2026 16:19:31 +0300 Message-ID: <20260324131931.4004123-1-safinaskar@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260320192735.748051-1-nphamcs@gmail.com> References: <20260320192735.748051-1-nphamcs@gmail.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Nhat Pham : > We can even perform compressed writeback > (i.e writing these pages without decompressing them) (see [12]). > [12]: https://lore.kernel.org/linux-mm/ZeZSDLWwDed0CgT3@casper.infradead.org/ This is supported in zram. The support was added here: https://lore.kernel.org/all/20251201094754.4149975-1-senozhatsky@chromium.org/ . It is already in mainline. -- Askar Safin