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 8817FC43441 for ; Fri, 9 Nov 2018 19:39:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4982F20883 for ; Fri, 9 Nov 2018 19:39:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="THCQRQEp" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4982F20883 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 S1726824AbeKJFVl (ORCPT ); Sat, 10 Nov 2018 00:21:41 -0500 Received: from mail-lj1-f193.google.com ([209.85.208.193]:47000 "EHLO mail-lj1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725758AbeKJFVl (ORCPT ); Sat, 10 Nov 2018 00:21:41 -0500 Received: by mail-lj1-f193.google.com with SMTP id v15-v6so2546969ljh.13; Fri, 09 Nov 2018 11:39:39 -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=vDh4rF2dTRAERIw52px7BPAemUfss8lSofGxMxErZ1Q=; b=THCQRQEppnoHn/r34EnJ50OpURE9PegZnI6hEsCyADzaYeOopR85qkspTY3I096c/H vUvN3PM8+2Sr64zs1jD7k508QYQb4iPwyXaZtKMCSACLZnvcKnCcB/RGTTxmK1DThe2v G82OHcz5d/cHY8a0TC1ArSF0LqQwujzsy8RS2c2XYjv5mJZCrkicQ+b37CQV0NFY2jqP LTYpOeGh/e8MzrzS7aQFtA4AJecgPDtFGrrGnBihlq95QyH6AQBmEoX0q2tkOZZTRPFF +sWh9ZeskcdypymircS7sWCxWmSF+mNI07WWlxmaEV2ElyoIs0XSHDB4TVxaPJxqFN3p eGGA== 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=vDh4rF2dTRAERIw52px7BPAemUfss8lSofGxMxErZ1Q=; b=dNsMUutr4jYtp3vnhnpCYGCqhYsH9TN1ganRpFXMpsdwTS/8pc3MD1fY9Z1qxj3ZYP odcuEqdNNX1n8NdLBc8CnnSDbVB1hjni3JL9a84L/EpElq2lNYwapK6mQUBrEIOGUOGM zYriAyXVX3QHIeYuonlYSrHLz1S8DIABd5kBTbpsk/H4F79U9PeqxOVzuv+ogLmsK5wQ YZP53vhJ+hsEOcHj7TLJUs4UgetvgWtZBZfc/+mdNr5s/vbq7w3N0ZbvVXsL42zdfSAj qyP6tuho3YU8QJmSx8Pkp4rpuP5TFUakie/Phb43DehripNoaaOe754QmzHreggM0kPk NBuA== X-Gm-Message-State: AGRZ1gKzDHpmlCmr+exrAsQKke24Qh0CVxV9L8mYNkHqxoqKVCoG1pc0 p0ZpOCSA8CW7wZwW0cPMbi0= X-Google-Smtp-Source: AJdET5e0noEWdOuCQNq0fBiLBvi1NomtHtgQemWT9h5oud3rcq5Tk4PIoM3scU2UDttRO1cdcTRjUg== X-Received: by 2002:a2e:9cd2:: with SMTP id g18-v6mr6882342ljj.161.1541792378239; Fri, 09 Nov 2018 11:39:38 -0800 (PST) Received: from uranus.localdomain ([5.18.102.224]) by smtp.gmail.com with ESMTPSA id 12-v6sm1541302ljf.96.2018.11.09.11.39.37 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 09 Nov 2018 11:39:37 -0800 (PST) Received: by uranus.localdomain (Postfix, from userid 1000) id C02C64608DB; Fri, 9 Nov 2018 22:39:36 +0300 (MSK) Date: Fri, 9 Nov 2018 22:39:36 +0300 From: Cyrill Gorcunov To: Rafael David Tinoco Cc: adobriyan@gmail.com, akpm@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, shuah@kernel.org Subject: Re: [PATCH] proc: fix and merge proc-self-map-file tests Message-ID: <20181109193936.GP13195@uranus.lan> References: <20181108111105.GC13195@uranus.lan> <20181109113036.21512-1-rafael.tinoco@linaro.org> <20181109114123.GK13195@uranus.lan> <1541763936.3280758.1571224480.76F1EF1C@webmail.messagingengine.com> <20181109114850.GL13195@uranus.lan> <1541764873.3286172.1571234624.727F6284@webmail.messagingengine.com> <20181109180407.GO13195@uranus.lan> <1541789329.305173.1571657968.7229F301@webmail.messagingengine.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1541789329.305173.1571657968.7229F301@webmail.messagingengine.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 Fri, Nov 09, 2018 at 04:48:49PM -0200, Rafael David Tinoco wrote: > > let me see if I got this right.. the premise for this test is to have *at least* > 2 vmas, so we can check if the symlink for the mem range, describing the mapped > area, is correct in procfs files, correct ? if yes, then why to have a totally > duplicated test... just to check if mmap(0, ... MAP_FIXED ...) would work ? > > Wouldn't exist a better place to have such test ? like in > tools/testing/selftests/vm/mmap-null.c or something like it ? genuine > curiosity.. thinking i'm missing something about this test... Ah, I happen to miss that they are identical except nil address. Then true, vm/ looks like more suitable place for that. Do you happen to know which exactly archs reserve first page (together with x86)?