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 X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 159CCC433E0 for ; Tue, 16 Jun 2020 14:51:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DE8EE20679 for ; Tue, 16 Jun 2020 14:51:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cmpxchg-org.20150623.gappssmtp.com header.i=@cmpxchg-org.20150623.gappssmtp.com header.b="Kts+k6eu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729346AbgFPOvR (ORCPT ); Tue, 16 Jun 2020 10:51:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37766 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726341AbgFPOvQ (ORCPT ); Tue, 16 Jun 2020 10:51:16 -0400 Received: from mail-qk1-x743.google.com (mail-qk1-x743.google.com [IPv6:2607:f8b0:4864:20::743]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF2E8C061573 for ; Tue, 16 Jun 2020 07:51:13 -0700 (PDT) Received: by mail-qk1-x743.google.com with SMTP id c185so19381061qke.7 for ; Tue, 16 Jun 2020 07:51:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cmpxchg-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=WFLTgGJ5LOxQenKARdYfCrtk1t6VepdL6VzhUDlajMc=; b=Kts+k6euY5oLtf5tmwXRNFGUhGHWkdA7OewYzlqCFmqsO+oP0gOkY9veTjBzlWEVYl UORvYhTCJc2coOGYzHiOfO209HA2dXWViqq2uItkXW9GiBStJbWAuyqNnAzsi87QFenO tVsl5e/8qY72GrV51aSGSGpp84hSGPA9tqRgdswktLogXcOb/mrl/DivaUgypINt6eJC Pqh79vjuddjzhus+huIbYxGlzNM3acc/mdoRsswn+fU0cHTCXQ0FzIsresCNiQRRfdo/ e1LGh8lQMxzk4O9P8KReJAj6xsnscr8TBP1awTvFnHlZY5Y6XPgzfsP32D7wG+lIbvnw kxfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=WFLTgGJ5LOxQenKARdYfCrtk1t6VepdL6VzhUDlajMc=; b=YagMvvKJwgZZ+YDkiKPRmbGHZpJNNvN3hO+PvTy4BXGSvqdk5UXNDCDAkw8y+AExXO mZt6crl3xpn/8Lq4d2VXSPyXbh0bwsB4Oij1glmmYlZ/dtZCSiEk6ujKjBMVowSqTTWW fg8jlrwua0GpHuB9iQyk6UIb7jGrf9i4IkTHEnMsk0Q03mRLu6itztD1n6NxtLSnrxA2 6pcvpppFvhdoWCiWcChthjMOGj0z+i2LHIO7+4+2HuvTmfPGdHcjmKSI8iJ+HNnayoiA IVYJF5TzMMmNB4yQ8NfqeBB4Ja+jfxgQO8xByJxf4/txd+OOJF4RFzSyzj/Q9qbVH3Cj QmGA== X-Gm-Message-State: AOAM533gC7CiITs8kp+Nnv4Jk1Aj/Gz7d0Wx2RMPdzf2TEtb3ZfQjRWj Azu7M+gSYNNvCMpY7xm5efP8SQ== X-Google-Smtp-Source: ABdhPJxoUuTjR/HnDD2RiYFZgrfAUGyaCqz8mMZepgrb6ol93ORKtTjYRCMvmCGQ/4segqqcHUSyrA== X-Received: by 2002:a05:620a:1114:: with SMTP id o20mr21147059qkk.120.1592319073084; Tue, 16 Jun 2020 07:51:13 -0700 (PDT) Received: from localhost (70.44.39.90.res-cmts.bus.ptd.net. [70.44.39.90]) by smtp.gmail.com with ESMTPSA id z19sm16357992qtz.81.2020.06.16.07.51.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jun 2020 07:51:12 -0700 (PDT) Date: Tue, 16 Jun 2020 10:50:35 -0400 From: Johannes Weiner To: js1304@gmail.com Cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Rik van Riel , Minchan Kim , Michal Hocko , kernel-team@lge.com, Joonsoo Kim Subject: Re: [PATCH for v5.8 3/3] mm/memory: fix IO cost for anonymous page Message-ID: <20200616145035.GC616830@cmpxchg.org> References: <1592288204-27734-1-git-send-email-iamjoonsoo.kim@lge.com> <1592288204-27734-4-git-send-email-iamjoonsoo.kim@lge.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1592288204-27734-4-git-send-email-iamjoonsoo.kim@lge.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 16, 2020 at 03:16:44PM +0900, js1304@gmail.com wrote: > From: Joonsoo Kim > > With synchronous IO swap device, swap-in is directly handled in fault > code. Since IO cost notation isn't added there, with synchronous IO swap > device, LRU balancing could be wrongly biased. Fix it to count it > in fault code. > > Signed-off-by: Joonsoo Kim Acked-by: Johannes Weiner