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From: Eugene Syromiatnikov <esyr@redhat.com>
To: Ondrej Mosnacek <omosnace@redhat.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	"David S. Miller" <davem@davemloft.net>,
	Antony Antony <antony.antony@secunet.com>,
	Christian Langrock <christian.langrock@secunet.com>,
	Nicolas Dichtel <nicolas.dichtel@6wind.com>,
	SElinux list <selinux@vger.kernel.org>,
	Paul Moore <paul@paul-moore.com>,
	Stephen Smalley <stephen.smalley.work@gmail.com>,
	Eric Paris <eparis@parisplace.org>,
	network dev <netdev@vger.kernel.org>,
	Linux kernel mailing list <linux-kernel@vger.kernel.org>,
	"Dmitry V. Levin" <ldv@strace.io>,
	Linux API <linux-api@vger.kernel.org>
Subject: Re: [PATCH v2] include/uapi/linux/xfrm.h: Fix XFRM_MSG_MAPPING ABI breakage
Date: Mon, 13 Sep 2021 12:23:16 +0200	[thread overview]
Message-ID: <20210913102316.GA30886@asgard.redhat.com> (raw)
In-Reply-To: <CAFqZXNtmN9827MQ0aX7ZcUia5amXuZWppb-9-ySxVP0QBy=O8Q@mail.gmail.com>

On Mon, Sep 13, 2021 at 09:16:39AM +0200, Ondrej Mosnacek wrote:
> Perhaps it would be a good idea to put a comment here to make it less
> likely that this repeats in the future. Something like:
> 
> /* IMPORTANT: Only insert new entries right above this line, otherwise
> you break ABI! */

Well, this statement is true for (almost) every UAPI-exposed enum, and
netlink is vast and relies on enums heavily.  I think it is already
mentioned somewhere in the documentation, and in the end it falls on the
shoulders of the maintainers—to pay additional attention to UAPI changes.


  reply	other threads:[~2021-09-13 10:23 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-12 12:22 [PATCH v2] include/uapi/linux/xfrm.h: Fix XFRM_MSG_MAPPING ABI breakage Eugene Syromiatnikov
2021-09-13  6:54 ` Antony Antony
2021-09-13  7:16 ` Ondrej Mosnacek
2021-09-13 10:23   ` Eugene Syromiatnikov [this message]
2021-09-13 13:50     ` Ondrej Mosnacek
2021-09-14  7:50 ` Nicolas Dichtel
2021-09-15  8:51 ` Steffen Klassert

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