From owner-svn-src-all@FreeBSD.ORG  Mon Dec 22 15:06:39 2014
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 656C81AC;
 Mon, 22 Dec 2014 15:06:39 +0000 (UTC)
Received: from bigwig.baldwin.cx (bigwig.baldwin.cx [IPv6:2001:470:1f11:75::1])
 (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 3E28B81F;
 Mon, 22 Dec 2014 15:06:39 +0000 (UTC)
Received: from jhbbsd.localnet (unknown [209.249.190.124])
 by bigwig.baldwin.cx (Postfix) with ESMTPSA id D5C72B93E;
 Mon, 22 Dec 2014 10:06:37 -0500 (EST)
From: John Baldwin <jhb@freebsd.org>
To: Andriy Gapon <avg@freebsd.org>
Subject: Re: svn commit: r276008 - in head/sys: kern sys
Date: Mon, 22 Dec 2014 09:40:02 -0500
User-Agent: KMail/1.13.5 (FreeBSD/8.4-CBSD-20140415; KDE/4.5.5; amd64; ; )
References: <201412211332.sBLDW8VC030548@svn.freebsd.org>
 <20141221151425.GX2148@kib.kiev.ua> <5496F37D.5030903@FreeBSD.org>
In-Reply-To: <5496F37D.5030903@FreeBSD.org>
MIME-Version: 1.0
Content-Type: Text/Plain;
  charset="windows-1252"
Content-Transfer-Encoding: 7bit
Message-Id: <201412220940.02509.jhb@freebsd.org>
X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7
 (bigwig.baldwin.cx); Mon, 22 Dec 2014 10:06:37 -0500 (EST)
Cc: Konstantin Belousov <kostikbel@gmail.com>, svn-src-head@freebsd.org,
 svn-src-all@freebsd.org, src-committers@freebsd.org
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.18-1
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: <http://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: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 22 Dec 2014 15:06:39 -0000

On Sunday, December 21, 2014 11:21:17 am Andriy Gapon wrote:
> On 21/12/2014 17:14, Konstantin Belousov wrote:
> > On Sun, Dec 21, 2014 at 04:45:28PM +0200, Andriy Gapon wrote:
> >> On 21/12/2014 16:41, Konstantin Belousov wrote:
> >>> Or, are you asking why caching of the name could be needed for
> >>> core dump files at all ?
> >>
> >> Sort of. Why VN_OPEN_NAMECACHE is useful in the case of core dumps?
> >> What does it make better?
> > The vn_fullpath() mostly works for the core files after the change,
> > comparing with the non-working state at all before.
> > 
> 
> Ah, vn_fullpath(). Thank you.

Is there something specific to core dumps that makes vn_fullpath() more
useful to have working before a process tries to open the core?  (As
compared to other newly-created files)

-- 
John Baldwin