From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f172.google.com (mail-yw1-f172.google.com [209.85.128.172]) (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 7FF5C302CBF for ; Wed, 13 Aug 2025 18:58:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755111529; cv=none; b=mMT5H2speIxDcBUxRz4MCzp1S5C1ciR9JyKNPPkZBRYK3uul+uBVjwjvAPBsozazBG/4Xy+66Ov6Rwig7kLjgAZyRjIslrG3QWslD+heKYied9KSvDQIJ1XoRgjOVFQmPWEN9igIq6cb+NpyNict0ThxF070IctE3BV3gJZr8v8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755111529; c=relaxed/simple; bh=YZYaje3uTeogrQvDi9KgjjqtvQ01p+kKmBxFAMHAT6c=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References: MIME-Version:Content-Type; b=nf9F8O6QIciB55Q4iaBS+4VapANYLVAMuWwMto9syA7ph9ucRAT+JS4UH5elCuFCatfrKy15xxKTZecc04WCqMiqw/ysCRQr3Y6YjHnd6d1/d2LOrVoF5XvBrwD2Y1hNFfOBR30yztdlmeHcHEGjzcJEsunmbqgrAoceEg5Nv4Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=hQJvvckk; arc=none smtp.client-ip=209.85.128.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="hQJvvckk" Received: by mail-yw1-f172.google.com with SMTP id 00721157ae682-71d603a9cfaso2145987b3.1 for ; Wed, 13 Aug 2025 11:58:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1755111525; x=1755716325; darn=vger.kernel.org; h=mime-version:references:message-id:in-reply-to:subject:cc:to:from :date:from:to:cc:subject:date:message-id:reply-to; bh=ErXJd0vSKv5PIPRtkelRINjdCNBVARkoKSWpOpAGMuo=; b=hQJvvckkUKtkJDckOUq76l//V5zwNISueLBzCa0nN8kRlMIadwyqhbY9t9rAnRKeNM TRuZZUFaiv9YSCDnts3gI5S2GdeYh4slnIVnCugg9f5qkS9XFwVlRdi2zdCu5mLp5AvL ouGac6FQZ2oO5ZpfLy12aj5/CchHMRVrfjB/YayIDftthl+pkQFnNhqL49+JS/uDuYQK gxjjJndwip2s5rLV1zOWP6xNqxD9KnjIP95j+P2GCueCHCeQfAqkZEBVNmGlnlvLnZAh rBibdMyyMe+J56GquQDyjJmFdPxOmZphjBjTGfUH4/gggDgpp+6Lx6p0UTTxRKOVWREX i/8A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755111525; x=1755716325; h=mime-version:references:message-id:in-reply-to:subject:cc:to:from :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ErXJd0vSKv5PIPRtkelRINjdCNBVARkoKSWpOpAGMuo=; b=gAzNRizterSUNnhfXR/aIm7rFxwMWx2eOlhuaGz/BYsylp4g09E/3cdGMFhHSFgbKd r3JVEDDAbFTZ5MlERgjGyYEMn52jcMM3GIz1GiQnDhZMR9Ovr6RFmGxYYLENJ+qlcn/1 KoY95sHO+5t564fs7jURDBCRxu06M5abSiZPnzIsyRueICKlsLrGMUF4haSQ42kVGhyb e6KoDIngWq/ZcceWtary2fk2VNWNNKbQzfOpSzUNfuJtEAH7AlmgHQeRZzxKf9OBuSOu MGabXXPPVWevQCmiRvr+IznAD/fBAggbAwXETxVmlT15sSBlqA4hoiEsZSXJuq82R5fo LRww== X-Forwarded-Encrypted: i=1; AJvYcCXYmJ7LCYyJjTmaavKWOz8BYisCC5cUpv6Wghe1v6RHOVCZHPR9G5oAfgZ6Hn7yI8FrO0AI9ierB5itvQA=@vger.kernel.org X-Gm-Message-State: AOJu0YwC0YDQCUdGrm79T8SY7123xoNKbunO0Tc09l3GENHLFSVau7od eqjXm47dgRvQ1v9HSbal4tU6XBak0DfZZhSxqzn5bjmvI7VXOPrckZpcm5zAXktS7w== X-Gm-Gg: ASbGnctLRpnTN8KWvsro24lvooobYKIxYCMgFTOJRQPmfCDuBnGOWnKby09mOJFmU5Y 3o6Tj8XE3H2JGXIlV/FLIukqp1XezwfdjrP1kdyJCrmthMwamzRuE/ZF76innDyiij9hB5soTgb wS7CW9AZAtFou132araxuKsFCX1U/Rh31ltz4M6qOOtHH21xJOg+XL3A2CDdo3Ym8fAHjd1DCCP ENLKwlegir+2ryAzp+TwPa9fdNV03ibx5TKyrs9rLeZHyC+Vo0XEftd3B0EKWvJamrkG5hCk/Jb yKBSs8v2hvxoDihzo4WvtE+HU1Vc9oo8MTH+YY4rijCroN8GcJ4YG7Oe7xRhlCXihWUMxU8vdU3 jTC0KYCqkVDaiTr3lcgA7/rfTaeS6FLw5cNDN3zP7sZP/NXjHmJa5/ohuCMiok2OxOnuzX80k8a gs/wxtVaCbeLqsh9vxSw== X-Google-Smtp-Source: AGHT+IHmWCKebeCYcagzzC5EU9PLeskZg7d3tFyQeQvq8T7WEqyHz15NqNtOu+rYzodMCmCovveD5g== X-Received: by 2002:a05:690c:708c:b0:71b:9c07:cfa7 with SMTP id 00721157ae682-71d4e5b2bfamr55195207b3.40.1755111525090; Wed, 13 Aug 2025 11:58:45 -0700 (PDT) Received: from darker.attlocal.net (172-10-233-147.lightspeed.sntcca.sbcglobal.net. [172.10.233.147]) by smtp.gmail.com with ESMTPSA id 00721157ae682-71d6107d1a0sm812637b3.76.2025.08.13.11.58.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Aug 2025 11:58:44 -0700 (PDT) Date: Wed, 13 Aug 2025 11:58:32 -0700 (PDT) From: Hugh Dickins To: Chris Li cc: SeongJae Park , Andrew Morton , Chengming Zhou , David Hildenbrand , Johannes Weiner , Nhat Pham , Yosry Ahmed , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Takero Funaki , Hugh Dickins Subject: Re: [PATCH v2] mm/zswap: store Message-ID: <2f75a76c-bdc1-6ca7-4438-21554831ec56@google.com> References: <20250812170046.56468-1-sj@kernel.org> 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 On Wed, 13 Aug 2025, Chris Li wrote: > > I know Hugh has some idea to store incompressible pages in the swap > cache as well. Hugh? No, I don't have any idea or plan to store incompressible pages in the swap cache myself. But yes, incompressible pages could well be "stored" in the swap cache. Hugh