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=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH, 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 AB3CBC04AB3 for ; Mon, 27 May 2019 14:22:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7B9062184C for ; Mon, 27 May 2019 14:22:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558966920; bh=kG7V+mXLimU7X9W6lFfIq5A6UNQxpn5WT9PMt5ll0oc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=EBcja9cx45vZxd+bMzZ9y/fGLZMoiCNSKTzp3oUMTEZPAK7GtXKncqnjNJSAdjNnf H0qjEwvTkm9ETpCITEgOu9v73hHQdfxza250HkNovWTuI3ZhcGh0oxLb/3VwdrR1iR /Lo+x7ZP0GSBaXs7h9E7NHPutaHZjBIQO/HTZ3q8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726605AbfE0OV7 (ORCPT ); Mon, 27 May 2019 10:21:59 -0400 Received: from mx2.suse.de ([195.135.220.15]:41250 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726115AbfE0OV7 (ORCPT ); Mon, 27 May 2019 10:21:59 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 25D96AEF3; Mon, 27 May 2019 14:21:58 +0000 (UTC) Date: Mon, 27 May 2019 16:21:56 +0200 From: Michal Hocko To: Konstantin Khlebnikov Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Vladimir Davydov , Johannes Weiner , Tejun Heo , Andrew Morton , Mel Gorman , Roman Gushchin , linux-api@vger.kernel.org Subject: Re: [PATCH RFC] mm/madvise: implement MADV_STOCKPILE (kswapd from user space) Message-ID: <20190527142156.GE1658@dhcp22.suse.cz> References: <155895155861.2824.318013775811596173.stgit@buzz> <20190527141223.GD1658@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190527141223.GD1658@dhcp22.suse.cz> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon 27-05-19 16:12:23, Michal Hocko wrote: > [Cc linux-api. Please always cc this list when proposing a new user > visible api. Keeping the rest of the email intact for reference] > > On Mon 27-05-19 13:05:58, Konstantin Khlebnikov wrote: [...] > > This implements manual kswapd-style memory reclaim initiated by userspace. > > It reclaims both physical memory and cgroup pages. It works in context of > > task who calls syscall madvise thus cpu time is accounted correctly. I do not follow. Does this mean that the madvise always reclaims from the memcg the process is member of? -- Michal Hocko SUSE Labs