From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261868AbTJWXTk (ORCPT ); Thu, 23 Oct 2003 19:19:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261869AbTJWXTk (ORCPT ); Thu, 23 Oct 2003 19:19:40 -0400 Received: from relay.pair.com ([209.68.1.20]:5897 "HELO relay.pair.com") by vger.kernel.org with SMTP id S261868AbTJWXTi (ORCPT ); Thu, 23 Oct 2003 19:19:38 -0400 X-pair-Authenticated: 24.126.73.164 Message-ID: <3F9862BD.9010708@kegel.com> Date: Thu, 23 Oct 2003 16:22:37 -0700 From: Dan Kegel User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1) Gecko/20031008 X-Accept-Language: de-de, en MIME-Version: 1.0 To: Andrew Morton CC: suparna@in.ibm.com, daniel@osdl.org, linux-aio@kvack.org, linux-kernel@vger.kernel.org, pbadari@us.ibm.com, Adrian Bunk Subject: Re: Patch for Retry based AIO-DIO (Was AIO and DIO testing on 2.6.0-test7-mm1) References: <1066432378.2133.40.camel@ibm-c.pdx.osdl.net> <20031020142727.GA4068@in.ibm.com> <1066693673.22983.10.camel@ibm-c.pdx.osdl.net> <20031021121113.GA4282@in.ibm.com> <1066869631.1963.46.camel@ibm-c.pdx.osdl.net> <20031023104923.GA11543@in.ibm.com> <20031023135030.GA11807@in.ibm.com> <20031023155937.41b0eeda.akpm@osdl.org> In-Reply-To: <20031023155937.41b0eeda.akpm@osdl.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andrew Morton wrote: > Suparna Bhattacharya wrote: > >>It turns out that backing out gcc-Os.patch (on RH 9) or switching >>to a system with an older compiler version made those errors go away. > > > Ho hum, so we have our answer. > > Adrian, how do you feel about slotting this under CONFIG_EMBEDDED? I dunno about Adrian, but I'd rest easier either way if we knew which optimization in -Os causes the problem, and whether this is a compiler bug. http://gcc.gnu.org/onlinedocs/gcc-3.3.1/gcc/Optimize-Options.html#Optimize%20Options has a nice list of the optimizations performed by -O2, but the list for -Os is a bit fuzzy, darn it. - Dan p.s. For the curious, the url of that patch seems to be ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.0-test8/2.6.0-test8-mm1/broken-out/gcc-Os.patch -- Dan Kegel http://www.kegel.com http://counter.li.org/cgi-bin/runscript/display-person.cgi?user=78045