From owner-svn-src-all@freebsd.org  Wed May 23 23:11:16 2018
Return-Path: <owner-svn-src-all@freebsd.org>
Delivered-To: svn-src-all@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id B01FAEEBCEA;
 Wed, 23 May 2018 23:11:16 +0000 (UTC) (envelope-from jhb@freebsd.org)
Received: from smtp.freebsd.org (smtp.freebsd.org [96.47.72.83])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "smtp.freebsd.org",
 Issuer "Let's Encrypt Authority X3" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 150A983CFE;
 Wed, 23 May 2018 23:11:16 +0000 (UTC) (envelope-from jhb@freebsd.org)
Received: from ralph.baldwin.cx (ralph.baldwin.cx [66.234.199.215])
 (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits))
 (Client did not present a certificate) (Authenticated sender: jhb)
 by smtp.freebsd.org (Postfix) with ESMTPSA id C48FABBC1;
 Wed, 23 May 2018 23:11:15 +0000 (UTC) (envelope-from jhb@freebsd.org)
From: John Baldwin <jhb@freebsd.org>
To: Matt Macy <mmacy@freebsd.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: Re: svn commit: r334104 - in head/sys: netinet sys
Date: Wed, 23 May 2018 11:52:23 -0700
Message-ID: <2281830.zrSQodBeDb@ralph.baldwin.cx>
User-Agent: KMail/4.14.10 (FreeBSD/11.1-STABLE; KDE/4.14.30; amd64; ; )
In-Reply-To: <201805231700.w4NH05hs047395@repo.freebsd.org>
References: <201805231700.w4NH05hs047395@repo.freebsd.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 7Bit
Content-Type: text/plain; charset="us-ascii"
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.26
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 23 May 2018 23:11:16 -0000

On Wednesday, May 23, 2018 05:00:05 PM Matt Macy wrote:
> Author: mmacy
> Date: Wed May 23 17:00:05 2018
> New Revision: 334104
> URL: https://svnweb.freebsd.org/changeset/base/334104
> 
> Log:
>   epoch: allow for conditionally asserting that the epoch context fields
>   are unused by zeroing on INVARIANTS builds

Is M_ZERO really so bad that you need to make it conditional?

I would probably have preferred something like 'M_ZERO_INVARIANTS'
instead perhaps (or M_ZERO_EPOCH) that only controls M_ZERO and is
still or'd with M_WAITOK or M_NOWAIT.

-- 
John Baldwin