Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758653AbYBEBVt (ORCPT ); Mon, 4 Feb 2008 20:21:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757529AbYBEBVj (ORCPT ); Mon, 4 Feb 2008 20:21:39 -0500 Received: from smtp2.linux-foundation.org ([207.189.120.14]:46749 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757268AbYBEBVi (ORCPT ); Mon, 4 Feb 2008 20:21:38 -0500 Date: Mon, 4 Feb 2008 17:20:57 -0800 (PST) From: Linus Torvalds To: Jeff Garzik cc: "J. Bruce Fields" , "Nicholas A. Bellinger" , James Bottomley , Vladislav Bolkhovitin , Bart Van Assche , Andrew Morton , FUJITA Tomonori , linux-scsi@vger.kernel.org, scst-devel@lists.sourceforge.net, Linux Kernel Mailing List , Mike Christie Subject: Re: Integration of SCST in the mainstream Linux kernel In-Reply-To: <47A7A903.1060000@garzik.org> Message-ID: References: <47A05CBD.5050803@vlnb.net> <47A7049A.9000105@vlnb.net> <1202139015.3096.5.camel@localhost.localdomain> <47A73C86.3060604@vlnb.net> <1202144767.3096.38.camel@localhost.localdomain> <47A7488B.4080000@vlnb.net> <1202145901.3096.49.camel@localhost.localdomain> <1202151989.11265.576.camel@haakon2.linux-iscsi.org> <20080204210121.GF18682@fieldses.org> <47A7986B.1070206@garzik.org> <47A7A903.1060000@garzik.org> User-Agent: Alpine 1.00 (LFD 882 2007-12-20) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 866 Lines: 23 On Mon, 4 Feb 2008, Jeff Garzik wrote: > > Both of these are easily handled if the server is 100% in charge of managing > the filesystem _metadata_ and data. That's what I meant by complete control. > > i.e. it not ext3 or reiserfs or vfat, its a block device or 1000GB file > managed by a userland process. Oh ok. Yes, if you bring the filesystem into user mode too, then the problems go away - because now your NFSD can interact directly with the filesystem without any kernel/usermode abstraction layer rules in between. So that has all the same properties as moving NFSD entirely into the kernel. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/