Date: Mon, 13 Apr 2015 21:54:58 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Richard Weinberger <richard.weinberger@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Arnd Bergmann <arnd@arndb.de>,
        One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
        Tom Gundersen <teg@jklm.no>, Jiri Kosina <jkosina@suse.cz>,
        Andy Lutomirski <luto@amacapital.net>,
        LKML <linux-kernel@vger.kernel.org>, daniel@zonque.org,
        David Herrmann <dh.herrmann@gmail.com>,
        Djalal Harouni <tixxdz@opendz.org>
Subject: Re: [GIT PULL] kdbus for 4.1-rc1
Message-ID: <20150413195458.GA11672@kroah.com>
References: <20150413190350.GA9485@kroah.com>
 <8738434yjk.fsf@x220.int.ebiederm.org>
 <20150413194217.GA10837@kroah.com>
 <CAFLxGvwB9guR_-+LPmShNsESb5adOO8JDdTcu8H29GSgArCxOA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAFLxGvwB9guR_-+LPmShNsESb5adOO8JDdTcu8H29GSgArCxOA@mail.gmail.com>
User-Agent: Mutt/1.5.23 (2014-03-12)
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1174
Lines: 30

On Mon, Apr 13, 2015 at 09:49:27PM +0200, Richard Weinberger wrote:
> On Mon, Apr 13, 2015 at 9:42 PM, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >> I remain opposed to this half thought out trash of an ABI for the
> >> meta-data.
> >
> > You don't have to enable the metadata if you don't want to use it, it's
> > an option :)
> 
> Wasn't this also an argument for CONFIG_CGROUPS?
> Now we're forced to enable it by default to boot a recent distro
> and CONFIG_CGROUPS is still not fixed.

CONFIG_CGROUPS is "not fixed"?  I think Tejun would like to have some
words with you :)

Anyway, yes, it's an option, but given that people are using this
metadata today in userspace just fine, I fail to see how having the
kernel be a transport for this same data is an issue.  When the kernel
is the transport, it can do so in a race-free way, and you can properly
do security tests/logic based on it.

thanks,

greg k-h
--
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/