From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTP id 8A97982A for ; Fri, 2 May 2014 19:38:40 +0000 (UTC) Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 20D3A1FC59 for ; Fri, 2 May 2014 19:38:40 +0000 (UTC) Date: Fri, 2 May 2014 21:38:36 +0200 (CEST) From: Jiri Kosina To: Theodore Ts'o In-Reply-To: <20140502193314.GA24108@thunk.org> Message-ID: References: <20140502164438.GA1423@jtriplet-mobl1> <20140502171103.GA725@redhat.com> <1399051229.2202.49.camel@dabdike> <20140502173309.GB725@redhat.com> <5363E8E1.9030806@zytor.com> <20140502193314.GA24108@thunk.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: Josh Boyer , Sarah Sharp , ksummit-discuss@lists.linuxfoundation.org, Greg KH , Julia Lawall , Darren Hart , Dan Carpenter Subject: Re: [Ksummit-discuss] [CORE TOPIC] Kernel tinification: shrinking the kernel and avoiding size regressions List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, 2 May 2014, Theodore Ts'o wrote: > Furthermore, given that low level progams programs like systemd have > grown to require control groups, it's not like you can even > realistically strip it from potentially even many embedded kernels, > since there seems to be a movement to have systemd infect even smaller > embedded applications. > > Anyone want to lay odds on when systemd will start using various > namespaces for its own purposes? :-) This is actually interesting topic on its own (but I am not completely what kernel maintainers could be realistically doing about it) -- userspace _strictly_ depending on _optional_ kernel features. systemd and cgroups is a good example, but not the only one, I think. A few weeks ago I was struggling to boot a systemd-based userspace, to find out that fanotify needs to be turned on. -- Jiri Kosina SUSE Labs