Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 6 Feb 2001 19:27:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 6 Feb 2001 19:26:50 -0500 Received: from zeus.kernel.org ([209.10.41.242]:14559 "EHLO zeus.kernel.org") by vger.kernel.org with ESMTP id ; Tue, 6 Feb 2001 19:26:38 -0500 Date: Wed, 7 Feb 2001 00:21:07 +0000 From: "Stephen C. Tweedie" To: Ingo Molnar Cc: Ben LaHaise , Linus Torvalds , "Stephen C. Tweedie" , Alan Cox , Manfred Spraul , Steve Lord , Linux Kernel List , kiobuf-io-devel@lists.sourceforge.net, Ingo Molnar Subject: Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait Message-ID: <20010207002107.L1167@redhat.com> In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2i In-Reply-To: ; from mingo@elte.hu on Tue, Feb 06, 2001 at 08:57:13PM +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Tue, Feb 06, 2001 at 08:57:13PM +0100, Ingo Molnar wrote: > > [overhead of 512-byte bhs in the raw IO code is an artificial problem of > the raw IO code.] No, it is a problem of the ll_rw_block interface: buffer_heads need to be aligned on disk at a multiple of their buffer size. Under the Unix raw IO interface it is perfectly legal to begin a 128kB IO at offset 512 bytes into a device. --Stephen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/