Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264193AbTEaHnN (ORCPT ); Sat, 31 May 2003 03:43:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264196AbTEaHnN (ORCPT ); Sat, 31 May 2003 03:43:13 -0400 Received: from wohnheim.fh-wedel.de ([195.37.86.122]:36547 "EHLO wohnheim.fh-wedel.de") by vger.kernel.org with ESMTP id S264193AbTEaHnM (ORCPT ); Sat, 31 May 2003 03:43:12 -0400 Date: Sat, 31 May 2003 09:56:15 +0200 From: =?iso-8859-1?Q?J=F6rn?= Engel To: "David S. Miller" Cc: jmorris@intercode.com.au, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, Con Kolivas Subject: Re: [PATCH RFC] 1/2 central workspace for zlib Message-ID: <20030531075615.GA25089@wohnheim.fh-wedel.de> References: <20030530174319.GA16687@wohnheim.fh-wedel.de> <20030530.171410.104043496.davem@redhat.com> <20030531064851.GA20822@wohnheim.fh-wedel.de> <20030530.235505.23020750.davem@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20030530.235505.23020750.davem@redhat.com> User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org CC List pruned a little. On Fri, 30 May 2003 23:55:05 -0700, David S. Miller wrote: > From: J?rn Engel > > How about preemption? zlib operations take their time, so at least on > up, it makes sense to preempt them, when not in softirq context. Can > this still be done lockless? > > You'll need to disable preemption. My gut feeling claims that this would hurt interactivity. Con, would contest on a jffs2 (zlib compressed) filesystem be able to show interactivity problems wrt zlib? J?rn -- Do not stop an army on its way home. -- Sun Tzu - 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/