Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S938316AbXHHSxH (ORCPT ); Wed, 8 Aug 2007 14:53:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1762301AbXHHSww (ORCPT ); Wed, 8 Aug 2007 14:52:52 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:54919 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760649AbXHHSwv (ORCPT ); Wed, 8 Aug 2007 14:52:51 -0400 Date: Wed, 8 Aug 2007 11:46:36 -0700 From: Andrew Morton To: Christoph Lameter Cc: Matt Mackall , Peter Zijlstra , linux-kernel@vger.kernel.org, linux-mm@kvack.org, David Miller , Daniel Phillips , Pekka Enberg , Lee Schermerhorn , Steve Dickson Subject: Re: [PATCH 04/10] mm: slub: add knowledge of reserve pages Message-Id: <20070808114636.7c6f26ab.akpm@linux-foundation.org> In-Reply-To: References: <20070806102922.907530000@chello.nl> <20070806103658.603735000@chello.nl> <20070808014435.GG30556@waste.org> <20070808103946.4cece16c.akpm@linux-foundation.org> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.6; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 709 Lines: 15 On Wed, 8 Aug 2007 10:57:13 -0700 (PDT) Christoph Lameter wrote: > I think in general irq context reclaim is doable. Cannot see obvious > issues on a first superficial pass through rmap.c. The irq holdoff would > be pretty long though which may make it unacceptable. The IRQ holdoff could be tremendous. But if it is sufficiently infrequent and if the worst effect is merely a network rx ring overflow then the tradeoff might be a good one. - 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/