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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 52BB1C71155 for ; Mon, 30 Nov 2020 22:53:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE89B20725 for ; Mon, 30 Nov 2020 22:53:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kinvolk.io header.i=@kinvolk.io header.b="QuqQG9AD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730738AbgK3Wxo (ORCPT ); Mon, 30 Nov 2020 17:53:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729586AbgK3Wxo (ORCPT ); Mon, 30 Nov 2020 17:53:44 -0500 Received: from mail-lf1-x141.google.com (mail-lf1-x141.google.com [IPv6:2a00:1450:4864:20::141]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7324DC0617A7 for ; Mon, 30 Nov 2020 14:52:17 -0800 (PST) Received: by mail-lf1-x141.google.com with SMTP id q13so24447357lfr.10 for ; Mon, 30 Nov 2020 14:52:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kinvolk.io; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=PQg0SNNWkwV7My6wc0FC7IpKl7QLq5MHv/j5j0aPpNA=; b=QuqQG9ADdDmV18jCrPnWfHcW15X5FNFPRcNOsTuadXp0R1ofszUYyn14cFgcYm1xt9 Ohx+O/XrOQeBzi2yNeMof2W9YaRXAoKumW+LWK+qJSn1igYlensrTdITOtBIwPZWx8hE yhr6LcaDWCZeMzfGxo8TOF8bDqi5UbWdB4uhs= 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=PQg0SNNWkwV7My6wc0FC7IpKl7QLq5MHv/j5j0aPpNA=; b=cU4avdgHL8SmYxtGKt1ezLLTWe5D6/dNAsxLtlyaDIIHPyIHgvHuRp+uYGr0H1SZf2 hKeDyakguNkjaGuBl2wSqYPMnjIHx3JfWe93XfZ/KGoZGZkUjdsX5UtObxYnYVNs4+09 DKC6TYPNzf5zsLJkMDfMxrHRFLvZ2WMM8QkWHrMEqoFX7lvlQhY2mxmb9ao5GoAFqECK BlJOhkkl13Z66AILJwXoR5/Exe795wusIqQHSlJyz8iEOBy6xFr1bop9kDdjlEXKRKCQ pEUFQhZ6maihbEhuUo7VqF6EmQ9XBH69Nb7v+/3Q1laY4GHxk+/XSOCrgVen56vvZw9i jUOw== X-Gm-Message-State: AOAM530h+XkyoLKzv50XYyoXGx6c+kWGqvlRLKOTBd4HPKQ0S9DUgjTI KlE0kk48yMo7aWq5gGIFnTi0zpveUDAimSqueFhPDA== X-Google-Smtp-Source: ABdhPJz6lQl/wsVF1Ne7U27EUw+OIPqS46oDCHQlHg6Xbv5haiwWr87dAhx/ApTPrUOy9koOzRi6b9gPinDiWazEth4= X-Received: by 2002:a19:8684:: with SMTP id i126mr841376lfd.561.1606776735655; Mon, 30 Nov 2020 14:52:15 -0800 (PST) MIME-Version: 1.0 References: <20201128213527.2669807-1-christian.brauner@ubuntu.com> <20201128213527.2669807-34-christian.brauner@ubuntu.com> In-Reply-To: <20201128213527.2669807-34-christian.brauner@ubuntu.com> From: =?UTF-8?Q?Mauricio_V=C3=A1squez_Bernal?= Date: Mon, 30 Nov 2020 17:52:04 -0500 Message-ID: Subject: Re: [PATCH v3 33/38] ext4: support idmapped mounts To: Christian Brauner Cc: Alexander Viro , Christoph Hellwig , linux-fsdevel@vger.kernel.org, Andy Lutomirski , Mimi Zohar , James Bottomley , Andreas Dilger , containers@lists.linux-foundation.org, Christoph Hellwig , Tycho Andersen , Paul Moore , Jonathan Corbet , smbarber@chromium.org, linux-ext4@vger.kernel.org, Mrunal Patel , Kees Cook , Arnd Bergmann , selinux@vger.kernel.org, Josh Triplett , Seth Forshee , Aleksa Sarai , Lennart Poettering , OGAWA Hirofumi , Geoffrey Thomas , David Howells , John Johansen , Theodore Tso , Dmitry Kasatkin , Stephen Smalley , fstests@vger.kernel.org, linux-security-module@vger.kernel.org, "Eric W. Biederman" , linux-api@vger.kernel.org, Casey Schaufler , Alban Crequy , linux-integrity@vger.kernel.org, Todd Kjos Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: > diff --git a/fs/ext4/Kconfig b/fs/ext4/Kconfig > index 619dd35ddd48..5918c05cfe5b 100644 > --- a/fs/ext4/Kconfig > +++ b/fs/ext4/Kconfig > @@ -118,3 +118,12 @@ config EXT4_KUNIT_TESTS > to the KUnit documentation in Documentation/dev-tools/kunit/. > > If unsure, say N. > + > +config EXT4_IDMAP_MOUNTS > + bool "Support vfs idmapped mounts in ext4" > + depends on EXT4_FS > + default n > + help > + The vfs allows to expose a filesystem at different mountpoints with > + differnet idmappings. Allow ext4 to be exposed through idmapped s/differnet/different/g