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=-2.4 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 EF195C04EB8 for ; Fri, 30 Nov 2018 04:37:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7B0462145D for ; Fri, 30 Nov 2018 04:37:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Jv5WMeB3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7B0462145D 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 S1726590AbeK3PpB (ORCPT ); Fri, 30 Nov 2018 10:45:01 -0500 Received: from mail-pf1-f194.google.com ([209.85.210.194]:43603 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726375AbeK3PpB (ORCPT ); Fri, 30 Nov 2018 10:45:01 -0500 Received: by mail-pf1-f194.google.com with SMTP id w73so2149178pfk.10 for ; Thu, 29 Nov 2018 20:37:01 -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=YYsxccKV4GfjAipx+mKa0UZHk0+8dvMN/X9SO6kCyEc=; b=Jv5WMeB3ciZFtkSmFYslF7i2HzWe1gcUFDA/WY5PhPYm92rLSO0ocvT7OmTr1uLgMe avHP9lwh5Gug87z+psRwQcrVwMyoseFHpiMxFi+c+buiLvi9qvkhlb8bTUdyN9L0/GRP /+wb61WtPETP+DLTCWLmoTSmA6I3bwSmAM3Ry0J1dVb5ybX7XuMq6/B58LYELTXMNerj C4Pu6+J7pCIJQjSQXE6z2tPOJz8fiwco7WkzrXw9qNwrNtNm+KLQxixk97I2v6o8+GBt 0xjmY1zcAY7C3iVRHZrnI27UcnhLmUCtzM3d0ikVL/k24uhc7GTpAZMTPExgh7tJvToN CisQ== 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=YYsxccKV4GfjAipx+mKa0UZHk0+8dvMN/X9SO6kCyEc=; b=XDBpm9ToQ+WdYndjbPnDsYzKvc3uAjV0Sl4wGu1VxcWjvIPJXyK/zpTSRNJCnjhNZ7 UbEIqvVmSlFXXPAOA5pEdnVTZVbU6sVUOu+0iQ/wgxhkTPD3SStJbzTE/PS7svM28zBD Zbz5PPpanOFT749Y/hP7sEQt3rhFbJ5mSuptYa76pcJb7kO7kqqT/vK9vc1SjU66walF 7yWrgmAqqUNAhPK9vhTBwv8Vbg4EqwGDNPflQBAIhx6DqJBvaKZ7qWFsBsJNabHoVg0w 9NWU5zTk+d2TWn92yJQvgLJsBoOFnv4fqQR4w7ACti+55kLmVYrQo6IL29EucPGV7h1g Fs0A== X-Gm-Message-State: AA+aEWaMEv5nVDjPKN0w1DYatbpXFXEAaPd5woj3VY1+xhCYMmjax5JI Sv3U5cFJPPC8M5no1EXslRc= X-Google-Smtp-Source: AFSGD/XGWzzphHFviF4UHb9w+JSpZ7dclfUtqyRX2uL3PeLXn0YMoCl53z5fGyywKJTN9vviphQcNQ== X-Received: by 2002:a63:88c7:: with SMTP id l190mr3548902pgd.110.1543552621298; Thu, 29 Nov 2018 20:37:01 -0800 (PST) Received: from localhost ([175.223.39.43]) by smtp.gmail.com with ESMTPSA id p24sm10266893pfk.155.2018.11.29.20.36.59 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 29 Nov 2018 20:37:00 -0800 (PST) Date: Fri, 30 Nov 2018 13:36:56 +0900 From: Sergey Senozhatsky To: Minchan Kim Cc: Andrew Morton , LKML , Sergey Senozhatsky , Joey Pabalinas Subject: Re: [PATCH v3 0/7] zram idle page writeback Message-ID: <20181130043656.GC605@jagdpanzerIV> References: <20181127055429.251614-1-minchan@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181127055429.251614-1-minchan@kernel.org> 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 (11/27/18 14:54), Minchan Kim wrote: > Inherently, swap device has many idle pages which are rare touched since > it was allocated. It is never problem if we use storage device as swap. > However, it's just waste for zram-swap. > > This patchset supports zram idle page writeback feature. > > * Admin can define what is idle page "no access since X time ago" > * Admin can define when zram should writeback them > * Admin can define when zram should stop writeback to prevent wearout > > Detail is on each patch's description. > > Below first two patches are -stable material so it could go first > separately with others in this series. I had some time to look at the patches Reviewed-by: Sergey Senozhatsky Will give it some testing later; next week maybe. -ss