From owner-svn-src-all@FreeBSD.ORG Sat Aug 7 13:36:34 2010 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 89CDD1065672; Sat, 7 Aug 2010 13:36:34 +0000 (UTC) (envelope-from gavin@ury.york.ac.uk) Received: from ixe-mta-27.emailfiltering.com (ixe-mta-27-tx.emailfiltering.com [194.116.199.158]) by mx1.freebsd.org (Postfix) with ESMTP id A09998FC14; Sat, 7 Aug 2010 13:36:33 +0000 (UTC) Received: from mail-gw12.york.ac.uk ([144.32.129.162]) by ixe-mta-27.emailfiltering.com with emfmta (version 4.5.0.261) by TLS id 705539010 for kostikbel@gmail.com; 7de639d96941fa8a; Sat, 07 Aug 2010 14:18:33 +0100 Received: from ury.york.ac.uk ([144.32.108.81]:57362) by mail-gw12.york.ac.uk with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1OhjIH-0004DR-D7; Sat, 07 Aug 2010 14:18:33 +0100 Received: from gavin (helo=localhost) by ury.york.ac.uk with local-esmtp (Exim 4.72) (envelope-from ) id 1OhjIH-0005lM-6M; Sat, 07 Aug 2010 14:18:33 +0100 Date: Sat, 7 Aug 2010 14:18:33 +0100 (BST) From: Gavin Atkinson X-X-Sender: gavin@ury.york.ac.uk To: Kostik Belousov In-Reply-To: <20100806184950.GR22295@deviant.kiev.zoral.com.ua> Message-ID: References: <201008060942.o769gFm2075268@svn.freebsd.org> <1281109176.68747.2.camel@buffy.york.ac.uk> <20100806184950.GR22295@deviant.kiev.zoral.com.ua> User-Agent: Alpine 2.00 (LNX 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r210923 - in head/sys: fs/devfs kern sys vm X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 Aug 2010 13:36:34 -0000 On Fri, 6 Aug 2010, Kostik Belousov wrote: > On Fri, Aug 06, 2010 at 04:39:36PM +0100, Gavin Atkinson wrote: > > On Fri, 2010-08-06 at 09:42 +0000, Konstantin Belousov wrote: > > > Author: kib > > > Date: Fri Aug 6 09:42:15 2010 > > > New Revision: 210923 > > > URL: http://svn.freebsd.org/changeset/base/210923 > > > > > > Log: > > > Add new make_dev_p(9) flag MAKEDEV_ETERNAL to inform devfs that created > > > cdev will never be destroyed. Propagate the flag to devfs vnodes as > > > VV_ETERNVALDEV. Use the flags to avoid acquiring devmtx and taking a > > > thread reference on such nodes. > > > > Does this flag have any effect on unmounting a devfs mount? > > It should not. The flag turns off some safety measures that are used > to make sure that cdev is not destroyed while cdevsw method is active. OK, thanks. > Do you experience some trouble after the change ? I've not seen any problems, I was just wanting to check that I understood the exact meaning of this flag. Thanks, Gavin