Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756366AbXF3Sn3 (ORCPT ); Sat, 30 Jun 2007 14:43:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754144AbXF3SnW (ORCPT ); Sat, 30 Jun 2007 14:43:22 -0400 Received: from rhun.apana.org.au ([64.62.148.172]:3059 "EHLO arnor.apana.org.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754014AbXF3SnV (ORCPT ); Sat, 30 Jun 2007 14:43:21 -0400 From: Herbert Xu To: muli@il.ibm.com (Muli Ben-Yehuda) Subject: Re: dma_mapping_ops for i386 Cc: ak@suse.de, jeremy@goop.org, linux-kernel@vger.kernel.org, jbeulich@novell.com, tony.luck@intel.com Organization: Core In-Reply-To: <20070627202839.GC4344@rhun.congress.lan> X-Newsgroups: apana.lists.os.linux.kernel User-Agent: tin/1.7.4-20040225 ("Benbecula") (UNIX) (Linux/2.6.17-rc4 (i686)) Message-Id: Date: Sun, 01 Jul 2007 02:41:02 +0800 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 760 Lines: 22 Muli Ben-Yehuda wrote: > >> And probably some similar mechanism for network drivers that limits >> MTUs. > > Will that guarantee that block and net IOs will not straddle a page > boundary? Mostly. There is the thorny case of slab debugging that breaks these nice assumptions. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt - 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/