Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422781AbWHSU6n (ORCPT ); Sat, 19 Aug 2006 16:58:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422782AbWHSU6n (ORCPT ); Sat, 19 Aug 2006 16:58:43 -0400 Received: from ns.suse.de ([195.135.220.2]:42732 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S1422781AbWHSU6m (ORCPT ); Sat, 19 Aug 2006 16:58:42 -0400 From: Andi Kleen To: Chuck Ebbert <76306.1226@compuserve.com> Subject: Re: [patch] block: fix queue bounce limit calculation Date: Sat, 19 Aug 2006 22:58:17 +0200 User-Agent: KMail/1.9.3 Cc: linux-kernel , Jens Axboe References: <200608190612_MC3-1-C895-98A8@compuserve.com> In-Reply-To: <200608190612_MC3-1-C895-98A8@compuserve.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200608192258.17430.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 532 Lines: 15 On Saturday 19 August 2006 12:11, Chuck Ebbert wrote: > Queue bounce should start after the max page, not on it. The page with memory 0xffffffff...0xffffffff+4096 is already beyond the limit. And 0xffffffff's PFN is 0xffffffff>>PAGE_SHIFT. I don't see how the patch is correct. -Andi - 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/