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=-6.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS 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 5454DC4363D for ; Wed, 21 Oct 2020 00:14:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CDDFA22242 for ; Wed, 21 Oct 2020 00:14:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="UsKlgwaI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2439504AbgJUAOw (ORCPT ); Tue, 20 Oct 2020 20:14:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46070 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2439457AbgJUAOv (ORCPT ); Tue, 20 Oct 2020 20:14:51 -0400 Received: from mail-pf1-x444.google.com (mail-pf1-x444.google.com [IPv6:2607:f8b0:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B921C0613CE for ; Tue, 20 Oct 2020 17:14:51 -0700 (PDT) Received: by mail-pf1-x444.google.com with SMTP id e7so381210pfn.12 for ; Tue, 20 Oct 2020 17:14:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=xAJaMbwaxxvFezOZ3VpNxWnppUzUipeo4rRvlxsypRw=; b=UsKlgwaIWbYSYcrdVUnBnkMc63VqqvshZTzfBhTUyRAxNvWPDu85rOOy3pqstTdUcu 0JbCdDKq4zxvP1+F93wa6fqSj1DsEdRBnwoY9OaP2ct+2nfhASW4epZ4/HtGcfK2yC+z ZpmspPOBVNx0/5J5uPEmWffTJjI1e9Z/9I7e3qEOoP56CMvzUMDWSP6asfPGnGZHFOyl EvQ8ucDY6oARb1NHBTbHUKMdoqb26qu+3mdBfzGpOlrTNbRlM/j7A/TITOJtA8Q/yZ6M w+Yv8gtzUHwEW20FUOcDSUTUTbRKzpTGjNb4alrIFs+UsW11xRWFSPE0d5ah1oW0Vt1m vyHQ== 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=xAJaMbwaxxvFezOZ3VpNxWnppUzUipeo4rRvlxsypRw=; b=cPMC0IyhFLK8EQoRcupJXQlOxdud5Z/EkCHeVs8t4fO8JXY2bEkk6iPgOyyB7V6nPh 21bBRuuZizjFV/VTiG1HC7skPR1C+kFRZP/FxdnE7CLuTJcLOTaF26eAGnva+LJWo/kX 4udkg7/I30YtreZ3mWB+NmNFC4FV5xBc3AESu+IJktTKU5URx5/OgJZLfC4Gtfmw2UNy B8+uUjqyjb+oWT4/o1gzDd2yRxsRPRt3XXibgQYM+eAnZaExUb7FaPHwFIfdcYrDvp1R PiKlGmN++cghYKb3XhaojKQiD81fszZDGJ5G61ZjNnVb0MP1abtl+hjxpNX+Tygx5Bve qbWg== X-Gm-Message-State: AOAM530Pbh0FcmwNrde8/F35IZntUZRgqSVgJtYYihxP/zm28Ne2+c78 9ksJtbu/C8t7BHXOwOjvM44= X-Google-Smtp-Source: ABdhPJwR+fJ8WWVo8i0Nk/4uIfitNi9b9Rekw7oKedjmZwqNS09tDrLc+hdcNHUSK1ZC5+CAQddNkQ== X-Received: by 2002:aa7:95a6:0:b029:155:336c:3494 with SMTP id a6-20020aa795a60000b0290155336c3494mr484435pfk.17.1603239291216; Tue, 20 Oct 2020 17:14:51 -0700 (PDT) Received: from localhost ([2401:fa00:8f:203:a6ae:11ff:fe11:4b46]) by smtp.gmail.com with ESMTPSA id ep13sm230537pjb.49.2020.10.20.17.14.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Oct 2020 17:14:50 -0700 (PDT) Date: Wed, 21 Oct 2020 09:14:48 +0900 From: Sergey Senozhatsky To: Minchan Kim Cc: Andrew Morton , linux-kernel@vger.kernel.org, rajekumar@google.com, amosbianchi@google.com, joaodias@google.com, Sergey Senozhatsky Subject: Re: [PATCH v2] zram: support a page writeback Message-ID: <20201021001448.GC2412725@google.com> References: <20201020190506.3758660-1-minchan@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201020190506.3758660-1-minchan@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (20/10/20 12:05), Minchan Kim wrote: > There is a demand to writeback specific pages on process to backing store > instead of all idles pages in the system due to storage wear out concern > and launching latency of apps which are most of time idle but critical > for resume latency. > > This patch extends the writeback knob to support a specific page > writeback. > > Cc: Sergey Senozhatsky > Signed-off-by: Minchan Kim Hi Minchan, LGTM Reviewed-by: Sergey Senozhatsky -ss