From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id DB547C433EF for ; Thu, 5 May 2022 19:33:21 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 446CF6B0072; Thu, 5 May 2022 15:33:21 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 41D7B6B0073; Thu, 5 May 2022 15:33:21 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2BED16B0074; Thu, 5 May 2022 15:33:21 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 1DB6A6B0072 for ; Thu, 5 May 2022 15:33:21 -0400 (EDT) Received: from smtpin24.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay12.hostedemail.com (Postfix) with ESMTP id 00CDB122441 for ; Thu, 5 May 2022 19:33:20 +0000 (UTC) X-FDA: 79432688202.24.0738FF9 Received: from mail-pj1-f43.google.com (mail-pj1-f43.google.com [209.85.216.43]) by imf23.hostedemail.com (Postfix) with ESMTP id 2B72014008E for ; Thu, 5 May 2022 19:33:10 +0000 (UTC) Received: by mail-pj1-f43.google.com with SMTP id c1-20020a17090a558100b001dca2694f23so4840031pji.3 for ; Thu, 05 May 2022 12:33:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=dRHgD9SEP6VxecvOJKMO+hE0skmrxwLBPBgRgtV/MUU=; b=cRbJ1Voo0Pa/pnGw+etrw1nN4wsyMSamotM9s29deoo46EfHIwdES8lYAf2BicHXYh cbUp7UQn497jeuMx6r582K3O7sammfm2CYNakU5Sb48i4jDKZ1/hFLj6g+yGHbGJg678 pNktgCkMDanFMuxNLRXwMiyGeLVgOhm//W+PEJVfg+oRO9cOlW+7w99LZd25UFx/xpnw 0PST6Um2u2Ibhy/5pt+x2B+DTaCcyj4HM4TxHjiiNvODWTuv3Qwv0YeTP3NAfk5RQGGr gWMXiYl5ck3Cr5eZRPzA0PTQ66o9qX9DoCCrsFx+1hjhm2KMdvZNlU04BokxyrIOe33N lB/g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=dRHgD9SEP6VxecvOJKMO+hE0skmrxwLBPBgRgtV/MUU=; b=XAD2+e1nixDa4p+xY1KXYe7BJd8tgkoFekFdTNJjQqmqMme4BD+HlUBmpDEeeN+CZg 6akHk9P75UUGI19yXxDqvMIrNeWFhW2HgbPmheRJQR9dVFXfqzwBNqTm43grsaatjr6c TDNn1nbS1cViMJCpEGxa/AanVGAO6gaGEP5czzvRgUat1S2yhMAMyFIAxRmzVk/wJtuv OUY5Q8ypW7JNL+/27QfY3tcXunZMdbvv8CBi1jHSwQ4qoAkuAgKDYdlObijA8uVIVf/u EnN/su7l2H26qOxZVQSAEIMcQ/etewXmQcCpCSboo2hlulbpwNOc7+w1NIrGLm9zs6bj ERyA== X-Gm-Message-State: AOAM532ebkJb/WkMnInftfSiw1aXKIqYiNB74YsD01fXfNFVnR+rg+w2 yqsf7YCQPTG49zmqgFiDsb9ZIUci5UQBwI3i4WkTfg== X-Google-Smtp-Source: ABdhPJxGguelLKMMpEx0uxbQpKMJbjQY6h5B3jSBojaGuvXcuco6MYRM1sPTvh64MqlKMdIMtg8Lwvyr/Ct7WyXrOzU= X-Received: by 2002:a17:90b:1d83:b0:1dc:4362:61bd with SMTP id pf3-20020a17090b1d8300b001dc436261bdmr8009409pjb.126.1651779199526; Thu, 05 May 2022 12:33:19 -0700 (PDT) MIME-Version: 1.0 References: <20220427160016.144237-1-hannes@cmpxchg.org> <20220427160016.144237-5-hannes@cmpxchg.org> In-Reply-To: From: Shakeel Butt Date: Thu, 5 May 2022 12:33:08 -0700 Message-ID: Subject: Re: [PATCH 4/5] mm: zswap: add basic meminfo and vmstat coverage To: Yang Shi , Suleiman Souhlal Cc: Johannes Weiner , Minchan Kim , Andrew Morton , Michal Hocko , Roman Gushchin , Seth Jennings , Dan Streetman , Linux MM , Cgroups , LKML , Kernel Team Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: z5nqon9ett4r65p9s9rryntjocpdzgb8 Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=cRbJ1Voo; spf=pass (imf23.hostedemail.com: domain of shakeelb@google.com designates 209.85.216.43 as permitted sender) smtp.mailfrom=shakeelb@google.com; dmarc=pass (policy=reject) header.from=google.com X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 2B72014008E X-HE-Tag: 1651779190-59286 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000011, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Apr 28, 2022 at 9:54 AM Yang Shi wrote: > [...] > > Yes, we have some modifications to zswap to make it work without any > > backing real swap. Though there is a future plan to move to zram > > eventually. > > Interesting, if so why not just simply use zram? > Historical reasons. When we started trying out the zswap, I think zram was still in staging or not stable enough (Suleiman can give a better answer).