From owner-freebsd-arch@FreeBSD.ORG Sat Feb 4 16:20:24 2012 Return-Path: Delivered-To: arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6BD721065670 for ; Sat, 4 Feb 2012 16:20:24 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id CE5FE8FC0C for ; Sat, 4 Feb 2012 16:20:23 +0000 (UTC) Received: from skuns.kiev.zoral.com.ua (localhost [127.0.0.1]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id q14GJ21q020850 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sat, 4 Feb 2012 18:19:02 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5) with ESMTP id q14GJ2me045426; Sat, 4 Feb 2012 18:19:02 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5/Submit) id q14GJ2JR045425; Sat, 4 Feb 2012 18:19:02 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Sat, 4 Feb 2012 18:19:02 +0200 From: Konstantin Belousov To: Dag-Erling Sm??rgrav Message-ID: <20120204161902.GQ3283@deviant.kiev.zoral.com.ua> References: <20120203193719.GB3283@deviant.kiev.zoral.com.ua> <8662fmk45y.fsf@ds4.des.no> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="apqMg07LpBOyFFAR" Content-Disposition: inline In-Reply-To: <8662fmk45y.fsf@ds4.des.no> User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-3.9 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: arch@freebsd.org Subject: Re: Prefaulting for i/o buffers 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: Sat, 04 Feb 2012 16:20:24 -0000 --apqMg07LpBOyFFAR Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Feb 04, 2012 at 04:29:45PM +0100, Dag-Erling Sm??rgrav wrote: > Konstantin Belousov writes: > > I previously published the patches to convert i/o path to use VMIO, > > based on the Jeff Roberson proposal, see > > http://wiki.freebsd.org/VM6. As a side effect, the VM6 fixed the > > deadlock. Since that work is very intrusive and did not got any > > follow-up, it get stalled. >=20 > If it works, and you commit it now, we have at least a year to shake it > down before the 10.0 release cycle... If it were KibBSD, the suggested route of action might be indeed reasonable. But, since our VM and VFS is the community efforts, I cannot and do not want to force other developers working in the same area to suffer from my mistakes. In other words, this cannot go in without community review and acceptance. --apqMg07LpBOyFFAR Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAk8tWnUACgkQC3+MBN1Mb4hG0QCg9S1o2htFfKRT/sL8aE55kwPL kSgAoOU8aHDstfX9mM4TRwEvMQEHPeXj =sL5Y -----END PGP SIGNATURE----- --apqMg07LpBOyFFAR--