Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753576Ab0DNM3W (ORCPT ); Wed, 14 Apr 2010 08:29:22 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:52949 "EHLO www.etchedpixels.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750715Ab0DNM3V (ORCPT ); Wed, 14 Apr 2010 08:29:21 -0400 Date: Wed, 14 Apr 2010 13:32:29 +0100 From: Alan Cox To: Andi Kleen Cc: Chris Mason , Mel Gorman , Dave Chinner , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH] mm: disallow direct reclaim page writeback Message-ID: <20100414133229.134264f0@lxorguk.ukuu.org.uk> In-Reply-To: <8739yy9qnf.fsf@basil.nowhere.org> References: <1271117878-19274-1-git-send-email-david@fromorbit.com> <20100413095815.GU25756@csn.ul.ie> <20100413111902.GY2493@dastard> <20100413193428.GI25756@csn.ul.ie> <20100413202021.GZ13327@think> <877hoa9wlv.fsf@basil.nowhere.org> <20100414112015.GO13327@think> <8739yy9qnf.fsf@basil.nowhere.org> X-Mailer: Claws Mail 3.7.5 (GTK+ 2.18.9; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 599 Lines: 12 > The only part of the 4K stack code that's good is the separate > interrupt stack, but that one should be just combined with a sane 8K > process stack. The reality is that if you are blowing a 4K process stack you are probably playing russian roulette on the current 8K x86-32 stack as well because of the non IRQ split. So it needs fixing either way -- 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/