Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp3584202pxb; Mon, 25 Jan 2021 22:21:47 -0800 (PST) X-Google-Smtp-Source: ABdhPJxuPn/G8zUSsmPmC0AYWHtdsx9Ss5lKzkz/Hivb69XNMZU1eziY7IL6MvhS6FCyV0XliyiF X-Received: by 2002:a05:6402:1819:: with SMTP id g25mr3216099edy.46.1611642107035; Mon, 25 Jan 2021 22:21:47 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1611642107; cv=none; d=google.com; s=arc-20160816; b=BUvCAzbKuAwpZjROn/tgFU9HILFTCT3/EsbGhhfmj4XKnNXgnzdBCQAzRFo6l80pDk uNlgC8SDj6AhugCJhJjVpQCTf5mlX5wXAhWvp7JNTfUwTUUNV7vaWU6N3tAr2wZH/DFu r6eQrHkKuHnvYA8QKMBEa8PL+gJfyie/6CZpiOdhznwZGSs5I1wz5vBiNDf61+6EFjpL wV4M4TzN9O8nnG/maXAMUF/XTz1CkseTRoA+1fzL4AxE4xQgvQU7FwByRV7yPvCZEFif rxHy4tlpReouEQNjb6TqKcsa1AFu6nd1ZxlYyBq6yHjnrU93a9FGR5kYnA7YK+KR9p5G mNsQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=hvyCg1tArEMURZiCaw0o7rfIdGticTsjrcjPx+/JdNc=; b=h8Ktu/OwftwzwmyMDssLbYYn0V9cv+jTMcEPU0OhxT5sEozLVL69OZtACZLtzNVn5+ x03vNZ7LMtLyBJzIjR7aRW576rjbrY2fQA0roLYZ2fWH61q4boocyiCv4J70Dik9Rpv/ ZnrhX63LBgb3ZangsBal/Z8IiLYyxmBm2UBJJx/fN0xU3PAzbrh5StUWgoUFher0KlGH pFJpbk5JyFRrV3rDNGSe+gQvCcNQ9eDBaUzg7/hxh3GmEw4frOqjiwrOr4zCspXR0MwD zG4eIIiQRKBbZUku3QuQ/d+T4zO6silEGtRcGsCOv97c8RTJNBuXuP2uUydy4AJPpWA+ vSXA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b=A4Vm72+P; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=suse.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id b15si8201637edy.91.2021.01.25.22.21.23; Mon, 25 Jan 2021 22:21:47 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b=A4Vm72+P; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=suse.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731930AbhAZGS0 (ORCPT + 99 others); Tue, 26 Jan 2021 01:18:26 -0500 Received: from mx2.suse.de ([195.135.220.15]:48444 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728757AbhAYNVT (ORCPT ); Mon, 25 Jan 2021 08:21:19 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1611580783; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=hvyCg1tArEMURZiCaw0o7rfIdGticTsjrcjPx+/JdNc=; b=A4Vm72+PELLClS/Iy715Uik0vACGATsRtA2iQMVkLUk7pB1NNEp+sD+oPc2YAwpCTCYFWo S6cgCM5W61YrqU3UsTpXfJsNEmMTLpZ92x7E+4u1Hve30Vlh8wUkj93JfsZaBNc0InUmqa E/9B6Y8rEAQXzzf6L5pfNetYN4lnJf8= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id D4325AAC6; Mon, 25 Jan 2021 13:19:42 +0000 (UTC) Date: Mon, 25 Jan 2021 14:19:35 +0100 From: Michal Hocko To: Suren Baghdasaryan Cc: linux-man@vger.kernel.org, akpm@linux-foundation.org, jannh@google.com, keescook@chromium.org, jeffv@google.com, minchan@kernel.org, shakeelb@google.com, rientjes@google.com, edgararriaga@google.com, timmurray@google.com, linux-mm@kvack.org, selinux@vger.kernel.org, linux-security-module@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@android.com Subject: Re: [PATCH 1/1] process_madvise.2: Add process_madvise man page Message-ID: <20210125131935.GI827@dhcp22.suse.cz> References: <20210120202337.1481402-1-surenb@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210120202337.1481402-1-surenb@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 20-01-21 12:23:37, Suren Baghdasaryan wrote: [...] > MADV_COLD (since Linux 5.4.1) > Deactivate a given range of pages by moving them from active to > inactive LRU list. This is done to accelerate the reclaim of these > pages. The advice might be ignored for some pages in the range when it > is not applicable. I do not think we want to talk about active/inactive LRU lists here. Wouldn't it be sufficient to say Deactive a given range of pages which will make them a more probable reclaim target should there be a memory pressure. This is a non-destructive operation. Other than that, looks good to me from the content POV. Thanks! -- Michal Hocko SUSE Labs