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From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: linux-raid-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org,
	Mimi Zohar
	<zohar-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
	Amir Goldstein <amir73il-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Steven Whitehouse
	<swhiteho-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	linux-xfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Joe Perches <joe-6d6DIl74uiNBDgjK7y7TUQ@public.gmane.org>,
	Andy Shevchenko
	<andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
	Shaohua Li <shli-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Subject: Re: [PATCH 03/23] uuid: remove uuid_be defintions from the uapi header
Date: Sun, 21 May 2017 08:55:57 +0200	[thread overview]
Message-ID: <20170521065557.GC13004@lst.de> (raw)
In-Reply-To: <13041.1495191521-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>

On Fri, May 19, 2017 at 11:58:41AM +0100, David Howells wrote:
> Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org> wrote:
> 
> > It's not a userspace ABI, so by defintion it does not break an
> > existing user program.
> 
> That's an invalid assumption.  It is a de facto userspace ABI as it has been
> exposed in /usr/include/linux/uuid.h for some time.

It is never passed through any kernel interface, which by defintion does
not make it an ABI.  And even if it was we are not going to change the
ABI for a uuid_t ever.  We're just changing the internal name, and stop
exposing the old name which was never used in an ABI to userspace.

      parent reply	other threads:[~2017-05-21  6:55 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20170518071352.GA515@lst.de>
     [not found] ` <20170518062705.25902-1-hch@lst.de>
     [not found]   ` <20170518062705.25902-4-hch@lst.de>
     [not found]     ` <1495091565.31562.28.camel@perches.com>
     [not found]       ` <20170518071352.GA515-jcswGhMUV9g@public.gmane.org>
2017-05-19 10:58         ` [PATCH 03/23] uuid: remove uuid_be defintions from the uapi header David Howells
     [not found]           ` <13041.1495191521-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2017-05-21  6:55             ` Christoph Hellwig [this message]

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