Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754439AbZIJVOt (ORCPT ); Thu, 10 Sep 2009 17:14:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753613AbZIJVOs (ORCPT ); Thu, 10 Sep 2009 17:14:48 -0400 Received: from mga02.intel.com ([134.134.136.20]:21311 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752979AbZIJVOr (ORCPT ); Thu, 10 Sep 2009 17:14:47 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.44,366,1249282800"; d="scan'208";a="447510972" Subject: Re: iwlagn: order 2 page allocation failures From: reinette chatre To: Mel Gorman Cc: Frans Pop , Larry Finger , "John W. Linville" , Pekka Enberg , "linux-kernel@vger.kernel.org" , "linux-wireless@vger.kernel.org" , "ipw3945-devel@lists.sourceforge.net" , Andrew Morton , "cl@linux-foundation.org" , "Krauss, Assaf" , Johannes Berg , "Abbas, Mohamed" In-Reply-To: <20090910090206.GA22276@csn.ul.ie> References: <200909060941.01810.elendil@planet.nl> <4AA67139.80301@lwfinger.net> <20090909150418.GI24614@csn.ul.ie> <200909091759.33655.elendil@planet.nl> <20090909165545.GK24614@csn.ul.ie> <1252526738.30150.91.camel@rc-desk> <20090910090206.GA22276@csn.ul.ie> Content-Type: text/plain Date: Thu, 10 Sep 2009 14:14:50 -0700 Message-Id: <1252617290.30150.321.camel@rc-desk> Mime-Version: 1.0 X-Mailer: Evolution 2.24.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 759 Lines: 20 On Thu, 2009-09-10 at 02:02 -0700, Mel Gorman wrote: > > As a total aside, there is still the problem that the driver is depending on > order-2 allocations. On systems without swap, the allocation problem could be > more severe as there are fewer pages the system can use to regain contiguity. I looked more at the implementation and hardware interface but I do not see a way around this. We have to provide 8k buffer to device, and we have to make sure it is aligned. Do you have any suggestions? Reinette -- 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/