From owner-freebsd-arch@FreeBSD.ORG Wed Apr 9 19:29:25 2008 Return-Path: Delivered-To: freebsd-arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A4EA81065676; Wed, 9 Apr 2008 19:29:25 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from relay02.kiev.sovam.com (relay02.kiev.sovam.com [62.64.120.197]) by mx1.freebsd.org (Postfix) with ESMTP id 400258FC25; Wed, 9 Apr 2008 19:29:25 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from [212.82.216.226] (helo=skuns.kiev.zoral.com.ua) by relay02.kiev.sovam.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.67) (envelope-from ) id 1Jjfz1-000KnP-9V; Wed, 09 Apr 2008 22:29:23 +0300 Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by skuns.kiev.zoral.com.ua (8.14.2/8.14.2) with ESMTP id m39JTRav071164 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 9 Apr 2008 22:29:27 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.2/8.14.2) with ESMTP id m39JTI21041820; Wed, 9 Apr 2008 22:29:18 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.2/8.14.2/Submit) id m39JTICp041819; Wed, 9 Apr 2008 22:29:18 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Wed, 9 Apr 2008 22:29:18 +0300 From: Kostik Belousov To: John Baldwin Message-ID: <20080409192918.GM21209@deviant.kiev.zoral.com.ua> References: <321309.94192.qm@web37604.mail.mud.yahoo.com> <20080409040144.GK21209@deviant.kiev.zoral.com.ua> <200804091125.46505.jhb@freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="mHEGYOlXWdrdotU2" Content-Disposition: inline In-Reply-To: <200804091125.46505.jhb@freebsd.org> User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: ClamAV version 0.91.2, clamav-milter version 0.91.2 on skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.4 X-Spam-Checker-Version: SpamAssassin 3.2.4 (2008-01-01) on skuns.kiev.zoral.com.ua X-Scanner-Signature: b3971b7ac160fe45482707327a257f38 X-DrWeb-checked: yes X-SpamTest-Envelope-From: kostikbel@gmail.com X-SpamTest-Group-ID: 00000000 X-SpamTest-Header: Not Detected X-SpamTest-Info: Profiles 2596 [Apr 09 2008] X-SpamTest-Info: helo_type=3 X-SpamTest-Method: none X-SpamTest-Rate: 0 X-SpamTest-Status: Not detected X-SpamTest-Status-Extended: not_detected X-SpamTest-Version: SMTP-Filter Version 3.0.0 [0278], KAS30/Release Cc: Rick Hunnicutt , freebsd-arch@freebsd.org Subject: Re: fdclone KPI X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Apr 2008 19:29:25 -0000 --mHEGYOlXWdrdotU2 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Apr 09, 2008 at 11:25:46AM -0400, John Baldwin wrote: > On Wednesday 09 April 2008 12:01:44 am Kostik Belousov wrote: > > On Tue, Apr 08, 2008 at 04:09:30PM -0700, Rick Hunnicutt wrote: > > > I'm curious if someone can tell me why the fdclone KPI was not includ= ed in=20 > the 7.0 release? > >=20 > > Because it got no > > - review; > > - interest from the driver authors; > > - agreement that this is the way to go. >=20 > Oof, where is the patch? I think it is definitely easier for people to u= se=20 > than devfs cloning when all that is needed is per-instance data. I would= use=20 > it in the ipmi(4) driver and the nvidia graphics driver would likely pref= er=20 > it to devfs cloning as well. http://people.freebsd.org/~kib/misc/fdclone.10.patch http://people.freebsd.org/~kib/misc/fclone.c The patch was developed before the struct file becomes lockless. The link above contains the mechanically updated patch, that was given one smoke-test run. fclone.c is the trivial driver that utilizes the new KPI. --mHEGYOlXWdrdotU2 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (FreeBSD) iEYEARECAAYFAkf9GQ4ACgkQC3+MBN1Mb4h2qwCfeH2LW+5dlHxQWfFzSfdj/xxm 4dkAoNhN81b8UJtO+uTLCjY4ZDkl+Rwu =vUHo -----END PGP SIGNATURE----- --mHEGYOlXWdrdotU2--