From owner-freebsd-hackers@FreeBSD.ORG  Tue Jul 12 21:44:25 2011
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 9AAB61065673;
	Tue, 12 Jul 2011 21:44:25 +0000 (UTC)
	(envelope-from Petr.Salinger@seznam.cz)
Received: from relay.felk.cvut.cz (relay.felk.cvut.cz [147.32.80.7])
	by mx1.freebsd.org (Postfix) with ESMTP id 1850B8FC17;
	Tue, 12 Jul 2011 21:44:23 +0000 (UTC)
Received: from sci.felk.cvut.cz (sci.felk.cvut.cz [147.32.83.100])
	by relay.felk.cvut.cz (8.14.4/8.14.4) with ESMTP id p6CLi5W0093602;
	Tue, 12 Jul 2011 23:44:05 +0200 (CEST)
	(envelope-from Petr.Salinger@seznam.cz)
Date: Tue, 12 Jul 2011 23:53:05 +0200 (CEST)
From: Petr Salinger <Petr.Salinger@seznam.cz>
X-X-Sender: salinger@sci.felk.cvut.cz
To: Robert Millan <rmh@debian.org>
In-Reply-To: <CAOfDtXNqwcguU1BwUHLb+jgP+56Cz7sFGEsb2GXSsxQX=OEz-Q@mail.gmail.com>
Message-ID: <alpine.LRH.2.02.1107122336050.11812@sci.felk.cvut.cz>
References: <20110711150614.GV43872@deviant.kiev.zoral.com.ua>
	<alpine.LRH.2.02.1107111718440.7134@sci.felk.cvut.cz>
	<20110711154102.GW43872@deviant.kiev.zoral.com.ua>
	<alpine.LRH.2.02.1107111805350.7134@sci.felk.cvut.cz>
	<20110711172408.GX43872@deviant.kiev.zoral.com.ua>
	<alpine.LRH.2.02.1107111944550.7134@sci.felk.cvut.cz>
	<20110711180246.GA43872@deviant.kiev.zoral.com.ua>
	<alpine.LRH.2.02.1107121108300.10573@sci.felk.cvut.cz>
	<20110712103526.GF43872@deviant.kiev.zoral.com.ua>
	<alpine.LRH.2.02.1107121622080.11177@sci.felk.cvut.cz>
	<20110712204337.GJ43872@deviant.kiev.zoral.com.ua>
	<CAOfDtXNqwcguU1BwUHLb+jgP+56Cz7sFGEsb2GXSsxQX=OEz-Q@mail.gmail.com>
User-Agent: Alpine 2.02 (LRH 1266 2009-07-14)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
X-FELK-MailScanner-Information: 
X-MailScanner-ID: p6CLi5W0093602
X-FELK-MailScanner: Found to be clean
X-FELK-MailScanner-SpamCheck: not spam, SpamAssassin (not cached,
	score=-1.119, required 6, AWL 0.00, BAYES_00 -1.90,
	FREEMAIL_FROM 0.00, SPF_NEUTRAL 0.78)
X-FELK-MailScanner-From: petr.salinger@seznam.cz
X-FELK-MailScanner-To: current@freebsd.org, freebsd-hackers@freebsd.org,
	kostikbel@gmail.com, rmh@debian.org
X-FELK-MailScanner-Watermark: 1311111846.61093@TuNctzhbfAQ3xyu/Wv33mw
X-Spam-Status: No
Cc: Kostik Belousov <kostikbel@gmail.com>, freebsd-hackers@freebsd.org,
	current@freebsd.org
Subject: Re: [PATCH] Improve LinuxThreads compatibility in rfork()
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 12 Jul 2011 21:44:25 -0000

>> I will bump revision for stable/8 when merging, but I do not see much
>> reason to bump on HEAD right now.

Many thanks.

> Uhm I think we can survive without a bump in HEAD.  For now we will
> need to keep our backward-compatibility patch anyway, and when the
> bump happens on stable/8 our sysctl comparison will identify 900039 as
> new ABI.

We cannot survive without a bump in HEAD before 9.0 release,
but we do not need bump immediately.

So far the condition for new API will be

   if (    (osreldate >= 900040)
       || ((osreldate >= 803000) && (osreldate < 900000)))

Of course, when MFC will bump revision, the 803000 constant
will change (probably to 802509).

Petr