Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752264AbbKYT4D (ORCPT ); Wed, 25 Nov 2015 14:56:03 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:47260 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751474AbbKYTz6 (ORCPT ); Wed, 25 Nov 2015 14:55:58 -0500 Date: Wed, 25 Nov 2015 19:55:53 +0000 From: Serge Hallyn To: Tejun Heo Cc: linux-api@vger.kernel.org, containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org, ebiederm@xmission.com, lxc-devel@lists.linuxcontainers.org, cgroups@vger.kernel.org, akpm@linux-foundation.org Subject: Re: [PATCH 7/8] cgroup: mount cgroupns-root when inside non-init cgroupns Message-ID: <20151125195553.GA5852@ubuntumail> References: <1447703505-29672-1-git-send-email-serge@hallyn.com> <1447703505-29672-8-git-send-email-serge@hallyn.com> <20151124171610.GS17033@mtj.duckdns.org> <20151125060156.GA678@mail.hallyn.com> <20151125191041.GB14240@htj.duckdns.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151125191041.GB14240@htj.duckdns.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1140 Lines: 29 Quoting Tejun Heo (tj@kernel.org): > Hello, Serge. > > On Wed, Nov 25, 2015 at 12:01:56AM -0600, Serge E. Hallyn wrote: > > that was my goal with https://git.kernel.org/cgit/linux/kernel/git/sergeh/linux-security.git/commit/?h=cgroupns.v4&id=8eb75d2bb24df59e262f050dce567d2332adc5f3 > > (which was sent inline earlier in this thread in response to Eric) Does > > that look sufficient? > > Hmmm... but that wouldn't work with non-root and user ns. I think Are you sure? IIUC that code block is only hit when we didn't find an already-mounted subsystem. > what's necessary is ensuring that namespace scoped mount never creates > a new hierarchy but always reuses an existing one. > > Thanks. > > -- > tejun > _______________________________________________ > Containers mailing list > Containers@lists.linux-foundation.org > https://lists.linuxfoundation.org/mailman/listinfo/containers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/