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=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 686D6C04EB9 for ; Mon, 3 Dec 2018 06:11:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2B7DD20881 for ; Mon, 3 Dec 2018 06:11:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Kn/0NDoQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2B7DD20881 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725852AbeLCGLz (ORCPT ); Mon, 3 Dec 2018 01:11:55 -0500 Received: from mail-pf1-f194.google.com ([209.85.210.194]:42817 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725816AbeLCGLz (ORCPT ); Mon, 3 Dec 2018 01:11:55 -0500 Received: by mail-pf1-f194.google.com with SMTP id 64so5804811pfr.9 for ; Sun, 02 Dec 2018 22:11:52 -0800 (PST) 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:user-agent; bh=nnqkeFmyEgPPB74hL2bJozRRr7Cq2ljeUYebz0iEsHc=; b=Kn/0NDoQeIA3LRyMuoAIsuz6BeCCiGVPt9PIFvs36+qfeelUQg4NFh1GwSQKoaqmkD xZFhG9hHJCObQEeYf56D/UGWwnuba4HdyL14rU3kU4zrrp6LraM2Mf3qkePs3CkuEpH/ mwOUfMalO/mySxY2PGkmhIwJNKo7gDUHgatcJbNHcy/IFvMLFodi32vSvcyBvpYHgChe opIE3eV0NQAthou0Pycy98obMKFGlcpaoBhDd+bhz2MMrM136vmVDQGfqeb37i1Ao6ck NDtPjKsM4ShzoEUJ4JDbYv8d/Pk0o/2gisMXNKJIlXxlAan2guaeJn/Vbgibda06oZyV OpkA== 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:user-agent; bh=nnqkeFmyEgPPB74hL2bJozRRr7Cq2ljeUYebz0iEsHc=; b=PkZh3IrrE3d9XVtaDrL5wbRZxqv0bzeUZdIknhh2qIMHVZTkyBz2jsgxPLYiNp2twJ ZEmVRCm4frR184T2VEZWpLT0KMrn+9gple3C/Rref278bBmyuRalKb0DG94LHw/yW5lO jGMo1bcYsdZ8LG5wVbUS23ZjuqciveU+posc28mx4vjef5eggrD2FIkcJ6/lVa9dInws qOsg126A8NVlagX+wJuwdF/mjSdEBqpZYGB/Y0iObCQwSEJwqz8AKkzxgzlhS0uR4ouU mm1J0BE9nUS+L15dbk23LpQudug+dqIKZx7W79rlEbs2g4e3HTjIf9VThBdKPeHGA6fW Ca6w== X-Gm-Message-State: AA+aEWZLw2fXtwYTjWKXAlqnV4A02S+F4S7nQBGhWiIlEk7JYWU8UFOJ LYMW40pYKZI2K5dFxD3d7J0= X-Google-Smtp-Source: AFSGD/W8i7WD/vH7NC7Om15mIugkW8yFu5mjsv4FOdN9knm95LHCdkptD6kbfsnuBvvhXAc2IDKUHw== X-Received: by 2002:aa7:85d7:: with SMTP id z23mr15230116pfn.205.1543817512446; Sun, 02 Dec 2018 22:11:52 -0800 (PST) Received: from localhost ([175.223.22.143]) by smtp.gmail.com with ESMTPSA id u78sm27362769pfi.2.2018.12.02.22.11.50 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 02 Dec 2018 22:11:51 -0800 (PST) Date: Mon, 3 Dec 2018 15:11:48 +0900 From: Sergey Senozhatsky To: Minchan Kim Cc: Andrew Morton , LKML , Joey Pabalinas , Sergey Senozhatsky Subject: Re: [PATCH v4 7/7] zram: writeback throttle Message-ID: <20181203061148.GF427@jagdpanzerIV> References: <20181203024045.153534-1-minchan@kernel.org> <20181203024045.153534-8-minchan@kernel.org> <20181203055026.GD427@jagdpanzerIV> <20181203060208.GE427@jagdpanzerIV> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181203060208.GE427@jagdpanzerIV> User-Agent: Mutt/1.11.0 (2018-11-25) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (12/03/18 15:02), Sergey Senozhatsky wrote: > Seems like I misread writeback_limit_store() a bit. > > So, if I want to, say, let only 10M of writteback pages, I need to > do > > echo 0 > writeback_limit > echo 10M > writeback_limit_store // memparse format is for > // simplicity only; I know > // it should be in 4K units. > > every day. How about dropping the "echo 0" and ->stop_writeback? Ah, this breaks the unlimited writeback. So, nevermind my comment. -ss