From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262169AbTFDKJJ (ORCPT ); Wed, 4 Jun 2003 06:09:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262483AbTFDKJJ (ORCPT ); Wed, 4 Jun 2003 06:09:09 -0400 Received: from ns.suse.de ([213.95.15.193]:2833 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id S262169AbTFDKJI (ORCPT ); Wed, 4 Jun 2003 06:09:08 -0400 Date: Wed, 4 Jun 2003 12:22:41 +0200 From: Andrea Arcangeli To: Marcelo Tosatti Cc: Georg Nikodym , lkml Subject: Re: -rc7 Re: Linux 2.4.21-rc6 Message-ID: <20030604102241.GM3412@x30.school.suse.de> References: <20030529140025.61f991d4.georgn@somanetworks.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4i X-GPG-Key: 1024D/68B9CB43 X-PGP-Key: 1024R/CB4660B9 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 29, 2003 at 04:11:12PM -0300, Marcelo Tosatti wrote: > > > On Thu, 29 May 2003, Georg Nikodym wrote: > > > On Wed, 28 May 2003 21:55:39 -0300 (BRT) > > Marcelo Tosatti wrote: > > > > > Here goes -rc6. I've decided to delay 2.4.21 a bit and try Andrew's > > > fix for the IO stalls/deadlocks. > > > > While others may be dubious about the efficacy of this patch, I've been > > running -rc6 on my laptop now since sometime last night and have seen > > nothing odd. > > > > In case anybody cares, I'm using both ide and a ieee1394 (for a large > > external drive [which implies scsi]) and I do a _lot_ of big work with > > BK so I was seeing the problem within hours previously. > > Great! are you really sure that it is the right fix? I mean, the batching has a basic problem (I was discussing it with Jens two days ago and he said he's already addressed in 2.5, I wonder if that could also have an influence on the fact 2.5 is so much better in fariness) the issue with batching in 2.4, is that it is blocking at 0 and waking at batch_requests. But it's not blocking new get_request to eat requests in the way back from 0 to batch_requests. I mean, there are two directions, when we move from batch_requests to 0 get_requests should return requests. in the way back from 0 to batch_requests the get_request should block (and it doesn't in 2.4, that is the problem) > > -rc7 will have to be released due to some problems :( > - > 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/ Andrea