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From: Dan Kegel <dank@kegel.com>
To: Andrew Morton <akpm@osdl.org>
Cc: suparna@in.ibm.com, daniel@osdl.org, linux-aio@kvack.org,
	linux-kernel@vger.kernel.org, pbadari@us.ibm.com,
	Adrian Bunk <bunk@fs.tum.de>
Subject: Re: Patch for Retry based AIO-DIO (Was AIO and DIO testing on 2.6.0-test7-mm1)
Date: Thu, 23 Oct 2003 16:22:37 -0700	[thread overview]
Message-ID: <3F9862BD.9010708@kegel.com> (raw)
In-Reply-To: <20031023155937.41b0eeda.akpm@osdl.org>

Andrew Morton wrote:
> Suparna Bhattacharya <suparna@in.ibm.com> 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


      parent reply	other threads:[~2003-10-23 23:19 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-10-17 23:12 AIO and DIO testing on 2.6.0-test7-mm1 Daniel McNeil
2003-10-18  0:24 ` Andrew Morton
2003-10-20 14:27 ` Suparna Bhattacharya
2003-10-20 23:47   ` Daniel McNeil
2003-10-21 12:11     ` Patch for Retry based AIO-DIO (Was AIO and DIO testing on 2.6.0-test7-mm1) Suparna Bhattacharya
2003-10-23  0:40       ` Daniel McNeil
2003-10-23 10:49         ` Suparna Bhattacharya
2003-10-23 13:50           ` Suparna Bhattacharya
2003-10-23 22:59             ` Andrew Morton
2003-10-23 23:20               ` Patch for Retry based AIO-DIO (Was AIO and DIO testing on2.6.0-test7-mm1) Adrian Bunk
2003-10-23 23:25                 ` Andrew Morton
2003-10-23 23:37                   ` Patch for Retry based AIO-DIO (Was AIO and DIO testingon2.6.0-test7-mm1) Adrian Bunk
2003-10-23 23:46                     ` Andrew Morton
2003-10-24  0:34                       ` Patch for Retry based AIO-DIO (Was AIO and DIOtestingon2.6.0-test7-mm1) Adrian Bunk
2003-10-26 11:57                       ` Adrian Bunk
2003-10-26 12:08                         ` Russell King
2003-10-26 12:17                           ` Adrian Bunk
2003-10-26 13:00                             ` Russell King
2003-10-23 23:22               ` Dan Kegel [this message]

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