Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp701129yba; Fri, 3 May 2019 09:05:44 -0700 (PDT) X-Google-Smtp-Source: APXvYqw6PRK73hs2MNGwdL2kWdygZu6vQ1j9WBWjrjTRTuw9prQ+ekKi/4Mb8qMi+I+vSvQvJyI/ X-Received: by 2002:a63:2943:: with SMTP id p64mr11404938pgp.151.1556899544612; Fri, 03 May 2019 09:05:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1556899544; cv=none; d=google.com; s=arc-20160816; b=0qKA+ncxkJsk+EUJ8PwLc3H1kS0vFa6PRJn7zC1zKxSGOpXlvocit22zbOVXF2KE4W HzcQUQOE/kTp6b4+9rctUDroNcs19bRy/QBUoXoO7gCUHBt5xb0nusUcJrYRgBU55os1 pdvjA9GV11mTcEzbb9VXIMg4M2aipfigxMaEoH7c1eQDGPGaiw2j0yudOnlABHRo5flZ bD5eDPwP+9n2+fi8OsR4lpzHEDUCwCPCFGad1XWVuQGJ4NUyLExCxAiJvn9ALpOwwdk6 ROF7xIzljkimuWiwcjXxoHZZPtTkMKJbB+p/oviC36jp1qRXzj4JGkP2oo5LOKycdeIY tXUg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version; bh=eFYEU9GgCBN7KdQ5dA8SVxpvDRzvxb6cnqoUyye2asw=; b=SAbiGoWimIUJyB+26lHHfs5QOrjZtoJIRmIiNHJ+zNJp2bjS2aIwsO6i8iV51KY6Bt RJosV8LY7VJehEZXeKUS5qpwkHuv4liolm+M5ePq86QsrpRgm36NmJKR3EFzmgaM46wu ZeYHpmTgh9HczBIINVPoAkRII3xYqnnd36KoZQnVcavU2TvhX1Frar5/ukr8wTszUwc7 GA88Fs5jLAI/hgyq7Eag+mhf3uu4M/2uaJeBFjyVfaD9ATOFVl8D4pQBabrd8PrsQleQ VsPzGYadYrJ/+LyKV6hgVV6Pp5LliAbUfGj4HH+0PcdnWkP8l37VYWXinaWIHKvhhiab BJFQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id x14si2658599pfm.179.2019.05.03.09.05.28; Fri, 03 May 2019 09:05:44 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727939AbfECPkx (ORCPT + 99 others); Fri, 3 May 2019 11:40:53 -0400 Received: from mail-ot1-f65.google.com ([209.85.210.65]:42417 "EHLO mail-ot1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726476AbfECPkx (ORCPT ); Fri, 3 May 2019 11:40:53 -0400 Received: by mail-ot1-f65.google.com with SMTP id f23so5663250otl.9 for ; Fri, 03 May 2019 08:40:52 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=eFYEU9GgCBN7KdQ5dA8SVxpvDRzvxb6cnqoUyye2asw=; b=Bj4FvsMjsIKHrttkhRGkZg81ACxgeEM1XCfA/kNWrpCtZNMvmeSvJoGJJUoPM0l/fU 4xJTSp4a62/ZRf2RIMDQN6j2mt/4Z37CjTUL6GbuGu/603v5OCWtM3Dqdq1onCbO2hwK A4c2dN3aV/IfRSTSADVMbJxaE/wX8RTtk5p2n0Vu5645WR5+Rgedi8FHdnNbPBTJtI4j crNkOq75w2kUGl31ksIoRx6DXhNDpD9FAtpRRYcaH3dOIJLyVaQJN9Iv5nW820XaXT2S oOYsfZ6k9qKvjRk7d8V6KVZm461zRaTCyyOGYLAAXyHgyfSqHgmjYrSurknmYrfEuYRx cOxQ== X-Gm-Message-State: APjAAAUvgaNyFAw8oDxvc3uG7j3zCUd4WKCOFnJ/HkUf5Km6W+N4eQQB 3M2hV1okmZowwgDTCgVm2/DQ/DzNVJPmKuE78RKEmw== X-Received: by 2002:a05:6830:1156:: with SMTP id x22mr356724otq.241.1556898052548; Fri, 03 May 2019 08:40:52 -0700 (PDT) MIME-Version: 1.0 References: <1556824391-24060-1-git-send-email-jsavitz@redhat.com> <1556824391-24060-3-git-send-email-jsavitz@redhat.com> In-Reply-To: From: Joel Savitz Date: Fri, 3 May 2019 11:40:41 -0400 Message-ID: Subject: Re: [PATCH 2/2] prctl.2: Document the new PR_GET_TASK_SIZE option To: David Laight Cc: "linux-kernel@vger.kernel.org" , Thomas Gleixner , Ingo Molnar , Masami Hiramatsu , Waiman Long , Mauro Carvalho Chehab , Kristina Martsenko , Andrew Morton , Cyrill Gorcunov , Kees Cook , "Gustavo A. R. Silva" , YueHaibing , Micah Morton , Yang Shi , Jann Horn , Alexey Dobriyan , Rafael Aquini , Michael Kerrisk Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 3, 2019 at 7:20 AM David Laight wrote: > Shouldn't this say what the value is? > ISTR a recent patch to change the was the 'used to be constant' TASK_SIZE is defined. > I think it might be 'The highest userspace virtual address the current > process can use.' But I might be wrong. I believe you are correct David. I will add this information to the manpage in the upcoming v3. Best, Joel Savitz