Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262329AbVCICW3 (ORCPT ); Tue, 8 Mar 2005 21:22:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261463AbVCICW1 (ORCPT ); Tue, 8 Mar 2005 21:22:27 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:59102 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S261437AbVCICUH (ORCPT ); Tue, 8 Mar 2005 21:20:07 -0500 Date: Wed, 9 Mar 2005 02:20:02 +0000 From: Christoph Hellwig To: "Chen, Kenneth W" Cc: linux-kernel@vger.kernel.org, "'Andrew Morton'" , "'Jens Axboe'" Subject: Re: Direct io on block device has performance regression on 2.6.x kernel - fix sync I/O path Message-ID: <20050309022002.GA23577@infradead.org> Mail-Followup-To: Christoph Hellwig , "Chen, Kenneth W" , linux-kernel@vger.kernel.org, 'Andrew Morton' , 'Jens Axboe' References: <200503090145.j291j7g16386@unix-os.sc.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200503090145.j291j7g16386@unix-os.sc.intel.com> User-Agent: Mutt/1.4.1i X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 581 Lines: 12 > --- linux-2.6.9/drivers/char/raw.c 2004-10-18 14:54:37.000000000 -0700 > +++ linux-2.6.9.ken/drivers/char/raw.c 2005-03-08 17:22:07.000000000 -0800 this is not the blockdevice, but the obsolete raw device driver. Please benchmark and if nessecary fix the blockdevice O_DIRECT codepath insted as the raw driver is slowly going away. - 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/