Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266781AbUFXRjD (ORCPT ); Thu, 24 Jun 2004 13:39:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266779AbUFXRjC (ORCPT ); Thu, 24 Jun 2004 13:39:02 -0400 Received: from holomorphy.com ([207.189.100.168]:12683 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S266781AbUFXRiu (ORCPT ); Thu, 24 Jun 2004 13:38:50 -0400 Date: Thu, 24 Jun 2004 10:38:27 -0700 From: William Lee Irwin III To: Andrea Arcangeli Cc: Nick Piggin , Takashi Iwai , Andi Kleen , ak@muc.de, tripperda@nvidia.com, discuss@x86-64.org, linux-kernel@vger.kernel.org Subject: Re: [discuss] Re: 32-bit dma allocations on 64-bit platforms Message-ID: <20040624173827.GH21066@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Andrea Arcangeli , Nick Piggin , Takashi Iwai , Andi Kleen , ak@muc.de, tripperda@nvidia.com, discuss@x86-64.org, linux-kernel@vger.kernel.org References: <20040624112900.GE16727@wotan.suse.de> <20040624164258.1a1beea3.ak@suse.de> <20040624152946.GK30687@dualathlon.random> <40DAF7DF.9020501@yahoo.com.au> <20040624165200.GM30687@dualathlon.random> <20040624165629.GG21066@holomorphy.com> <20040624173236.GP30687@dualathlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040624173236.GP30687@dualathlon.random> User-Agent: Mutt/1.5.5.1+cvs20040105i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1320 Lines: 25 On Thu, Jun 24, 2004 at 07:32:36PM +0200, Andrea Arcangeli wrote: > I did quite a few times and it was successfully merged in 2.4. Now I'd > need to forward port to 2.6. > I recall I recommended Andrew to merge the lower_zone_reserve_ratio > at some point during 2.5 or early 2.6 but apparently he implemented this > other thing called sysctl_lower_zone_protection. Note that now that I > look more into it, it seems sysctl_lower_zone_protection and > lower_zone_reserve_ratio have very little in common, I'm glad > sysctl_lower_zone_protection is disabled. sysctl_lower_zone_protection > is just an improvement to the algorithm I dropped from 2.4 when > lowmem_zone_reserve_ratio was merged. So in short enabling > sysctl_lower_zone_protection won't help, sysctl_lower_zone_protection > should be dropped enterely and replaced with lower_zone_reserve_ratio. Could you refer me to an online source (e.g. Message-Id or URL) where the deficiencies in the incremental min and/or lower_zone_protection that the zone-to-zone watermarks address are described in detail? -- wli - 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/