From owner-svn-src-head@FreeBSD.ORG  Tue Apr  9 15:34:38 2013
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id AD876F38;
 Tue,  9 Apr 2013 15:34:38 +0000 (UTC)
 (envelope-from asmrookie@gmail.com)
Received: from mail-ie0-x22a.google.com (mail-ie0-x22a.google.com
 [IPv6:2607:f8b0:4001:c03::22a])
 by mx1.freebsd.org (Postfix) with ESMTP id 728CE210;
 Tue,  9 Apr 2013 15:34:38 +0000 (UTC)
Received: by mail-ie0-f170.google.com with SMTP id c11so8794291ieb.29
 for <multiple recipients>; Tue, 09 Apr 2013 08:34:38 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:x-received:reply-to:sender:in-reply-to:references:date
 :x-google-sender-auth:message-id:subject:from:to:cc:content-type;
 bh=NHs/qtxUox7w0mY0EX7/jCz0VEwG01dk6Anha2lQJEI=;
 b=MbcRmvqvv972yQT7Kn34TWWgUr3bAyQDMcus4rmWiEbh+oxrMIL/sajJT6hLnPZ9gl
 mg6nnUhkNhFFCREfxaoFF18atnDZZTAJ1Bd6sWdt54xp8QF9o6R0THtUTPKKTyQXmhFf
 vTcsTHDk5bihXsOt6dtKk8tf3e5wa+peaNj74iM74piQG+J/bcCgjA0WmDDcHfUSlZG7
 GbaK32iN+qXSC6uZbpG3Y58WM1U9IWFudHuOcVhx1NNLdZrcKfOeHp6YD9a8n3h8ypWh
 q0Nqrci5uQo/FE2W6OtKFuGj5HCWHwSsK0x1fzZcNYm4sckjyJmQH2EzJbv5RyF45ean
 z8Vg==
MIME-Version: 1.0
X-Received: by 10.43.103.195 with SMTP id dj3mr15081454icc.3.1365521678053;
 Tue, 09 Apr 2013 08:34:38 -0700 (PDT)
Sender: asmrookie@gmail.com
Received: by 10.42.117.134 with HTTP; Tue, 9 Apr 2013 08:34:37 -0700 (PDT)
In-Reply-To: <20130409153222.GF2930@kib.kiev.ua>
References: <201304081958.r38JwWf0001257@svn.freebsd.org>
 <20130409153222.GF2930@kib.kiev.ua>
Date: Tue, 9 Apr 2013 17:34:37 +0200
X-Google-Sender-Auth: Vu7EqSpIAHwjZQfIUL79pvWEE8M
Message-ID: <CAJ-FndALg6C9c7MXd_KscXxeyqmBKOYkeHoiuW5AafP-dF24Zg@mail.gmail.com>
Subject: Re: svn commit: r249277 - head/sys/kern
From: Attilio Rao <attilio@freebsd.org>
To: Konstantin Belousov <kostikbel@gmail.com>
Content-Type: text/plain; charset=UTF-8
Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
 src-committers@freebsd.org
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
Reply-To: attilio@FreeBSD.org
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 09 Apr 2013 15:34:38 -0000

On Tue, Apr 9, 2013 at 5:32 PM, Konstantin Belousov <kostikbel@gmail.com> wrote:
> On Mon, Apr 08, 2013 at 07:58:32PM +0000, Attilio Rao wrote:
>> Author: attilio
>> Date: Mon Apr  8 19:58:32 2013
>> New Revision: 249277
>> URL: http://svnweb.freebsd.org/changeset/base/249277
>>
>> Log:
>>   Switch some "low-hanging fruit" to acquire read lock on vmobjects
>>   rather than write locks.
>
> Could you, please, change the assertion types for object page accessors,
> like vm_page_lookup(), as the first step ?

This is going to happen pretty soon.
Alan and I have some code that depends on such assertions changing and
we want to do it in structured way.

Attilio


--
Peace can only be achieved by understanding - A. Einstein