Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751840AbXJVUpg (ORCPT ); Mon, 22 Oct 2007 16:45:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750898AbXJVUp2 (ORCPT ); Mon, 22 Oct 2007 16:45:28 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:51771 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750847AbXJVUp1 (ORCPT ); Mon, 22 Oct 2007 16:45:27 -0400 Date: Mon, 22 Oct 2007 13:44:43 -0700 (PDT) From: Linus Torvalds To: Alan Cox cc: Geert Uytterhoeven , Jens Axboe , Linux Kernel Development , mingo@elte.hu, Linux/m68k Subject: Re: [PATCH 09/10] Change table chaining layout In-Reply-To: <20071022211617.31f5c63d@the-village.bc.nu> Message-ID: References: <1193076664-13652-1-git-send-email-jens.axboe@oracle.com> <1193076664-13652-10-git-send-email-jens.axboe@oracle.com> <20071022211617.31f5c63d@the-village.bc.nu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 784 Lines: 23 On Mon, 22 Oct 2007, Alan Cox wrote: > > Why can't we just make the list one item longer than the entry count and > stick a NULL on the end of it like normal people ? Then you need one bit > which ought to be safe for everyone (and if the bit is a macro any CPU > warped enough to have byte alignment is surely going to have top bits > spare...) Well, quite frankly, equally easy is to just add a __attribute__((aligned(4))) or whatever the gcc syntax for that is today.. That guarantees that gcc lays things out properly. 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/