Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762306AbXHTVRj (ORCPT ); Mon, 20 Aug 2007 17:17:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751283AbXHTVR3 (ORCPT ); Mon, 20 Aug 2007 17:17:29 -0400 Received: from netops-testserver-3-out.sgi.com ([192.48.171.28]:49626 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751269AbXHTVR2 (ORCPT ); Mon, 20 Aug 2007 17:17:28 -0400 Date: Mon, 20 Aug 2007 14:17:27 -0700 (PDT) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: Peter Zijlstra cc: Pavel Machek , linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, dkegel@google.com, David Miller , Nick Piggin Subject: Re: [RFC 2/9] Use NOMEMALLOC reclaim to allow reclaim if PF_MEMALLOC is set In-Reply-To: <1187644449.5337.48.camel@lappy> Message-ID: References: <20070814153021.446917377@sgi.com> <20070814153501.305923060@sgi.com> <20070818071035.GA4667@ucw.cz> <1187641056.5337.32.camel@lappy> <1187644449.5337.48.camel@lappy> 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: 697 Lines: 16 On Mon, 20 Aug 2007, Peter Zijlstra wrote: > > Its not that different. > > Yes it is, disk based completion does not require memory, network based > completion requires unbounded memory. Disk based completion only require no memory if its not on a stack of other devices and if the interrupt handles is appropriately shaped. If there are multile levels below or there is some sort of complex completion handling then this also may require memory. - 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/