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,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,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 18DCCC04AAF for ; Thu, 16 May 2019 17:24:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E01F42082E for ; Thu, 16 May 2019 17:24:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="tsFelydZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727610AbfEPRY5 (ORCPT ); Thu, 16 May 2019 13:24:57 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:43640 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726394AbfEPRY5 (ORCPT ); Thu, 16 May 2019 13:24:57 -0400 Received: by mail-wr1-f67.google.com with SMTP id r4so4257652wro.10; Thu, 16 May 2019 10:24:56 -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:user-agent; bh=GwdAfYvM41KiSLkhlq7rAt3w1iZyUAjGI7qrOqoVW5o=; b=tsFelydZLhNvYDfeLAWpd9ZwFCHCG8AiKyuzgsSzXz4v0flYaDVLn//dqRSH9pssXd 5dbeqhtnk38ShQidfbi+qNj3cWXAa0IZrsjoInLiJzcOJ8WKNS1AI7PHiiE048Ii6xZh IMalHDtjMxy8w+V1gZkq9SzxF36wgJAPkEx8cIMCuk7lF6NlCT1TBDxLsZ1r2ieLwTC6 Qey5JgIKurXACewo03AC9iyGB8S9j88Oia/0rfC6MiZSwmiv6Hg8CXc/g6fNuZGzMcYy ITUVxvgb2V8EAfKxI9902rM1Ku1TFSOQ/XQbNIKM/NRcryk4SperNpY36Z45a+xCt4UR E8SQ== 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=GwdAfYvM41KiSLkhlq7rAt3w1iZyUAjGI7qrOqoVW5o=; b=D1nQzR9gfI5cbHAf1EYR11ABd8+K21IyooPzUoRQqvYKHZQkA9tyF4lBZhRcfW+QP5 mW5oeeTKtC+HER537cBJI+HWFhZnWuyULRGYOdD1k1mPpdV1t0GycTcRfKTVTteJ8zi8 0miZIjNYK/GggXYxEPbbKsEMMZr81rQeO8PFMOa1GPB8WCnNnOqSaIdpMQhX6bVmWEyM tjDZHe1PANAwIfiILkiF1x4SQXer9b0ACyrglsimLPgt4ZgQmh5j6vsWIyt/mqbp5vb4 rqcKSaJ73nc3tViRadII/FnZZE92S2AajMPqDsGs7lNObye8zc1EmvcEAsSnH7mOZwND ms9A== X-Gm-Message-State: APjAAAXmNxw3RDN1VAcPRjKrIAQgBtRE4+qK/DuuSonH03oqpsTE1x7V JOXMD8ax1tE6jiMWkeDFAQ== X-Google-Smtp-Source: APXvYqxXhyZaIbtY/Sjz0UTDsBri4w8N4SWVTBL/lOnSyeL4B2It+7qNhzKrwBJjN1ueL0PAiOqHdw== X-Received: by 2002:adf:8bc5:: with SMTP id w5mr16879957wra.226.1558027496104; Thu, 16 May 2019 10:24:56 -0700 (PDT) Received: from avx2 ([46.53.251.158]) by smtp.gmail.com with ESMTPSA id a22sm4350148wma.41.2019.05.16.10.24.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 16 May 2019 10:24:55 -0700 (PDT) Date: Thu, 16 May 2019 20:24:52 +0300 From: Alexey Dobriyan To: Oleksandr Natalenko Cc: linux-kernel@vger.kernel.org, Kirill Tkhai , Hugh Dickins , Vlastimil Babka , Michal Hocko , Matthew Wilcox , Pavel Tatashin , Greg KH , Suren Baghdasaryan , Minchan Kim , Timofey Titovets , Aaron Tomlin , Grzegorz Halat , linux-mm@kvack.org, linux-api@vger.kernel.org Subject: Re: [PATCH RFC 0/5] mm/ksm, proc: introduce remote madvise Message-ID: <20190516172452.GA2106@avx2> References: <20190516094234.9116-1-oleksandr@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190516094234.9116-1-oleksandr@redhat.com> 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 Thu, May 16, 2019 at 11:42:29AM +0200, Oleksandr Natalenko wrote: > * to mark all the eligible VMAs as mergeable, use: > > # echo merge > /proc//madvise > > * to unmerge all the VMAs, use: > > # echo unmerge > /proc//madvise Please make a real system call (or abuse prctl(2) passing target's pid). Your example automerge daemon could just call it and not bother with /proc.