From: James Bottomley <James.Bottomley@steeleye.com>
To: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: linux-arch@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
davej@codemonkey.org.uk
Subject: Re: [CFT] read+shared mmap write+read data corruption
Date: Mon, 28 May 2007 09:22:01 -0500 [thread overview]
Message-ID: <1180362121.3689.7.camel@mulgrave.il.steeleye.com> (raw)
In-Reply-To: <20070528123311.GA31609@xi.wantstofly.org>
On Mon, 2007-05-28 at 14:33 +0200, Lennert Buytenhek wrote:
> On Sun, May 27, 2007 at 07:00:31PM -0500, James Bottomley wrote:
>
> > Ok, output on parisc is:
> >
> > jejb@ioz:~$ ./a.out
> > firstfirstfirst
> > firstfirstfirst
> > secondsecondsec
> >
> > Which is correct. It remains correct even if I drop the msync().
>
> What else was running when you ran this program, and how many runs
> did you try? I get a mixture of firstfirstfirst and secondsecondsec
> when the machine I run it on isn't idle.
Both loaded and unloaded ... although you have to be careful how you
load on pa to see coherency problems: the fork/exec cycle does a full
cache flush.
James
James
next prev parent reply other threads:[~2007-05-28 14:22 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-27 10:49 [CFT] read+shared mmap write+read data corruption Russell King
2007-05-27 14:16 ` James Bottomley
2007-05-27 22:25 ` Lennert Buytenhek
2007-05-27 23:06 ` David Miller
2007-05-27 23:05 ` David Miller
2007-05-28 0:31 ` James Bottomley
2007-05-28 12:44 ` Lennert Buytenhek
2007-05-29 5:35 ` David Miller
2007-05-29 9:12 ` Russell King
2007-05-29 10:26 ` David Miller
2007-05-27 22:24 ` Lennert Buytenhek
2007-05-28 0:00 ` James Bottomley
2007-05-28 10:05 ` Russell King
2007-05-28 14:17 ` James Bottomley
2007-05-28 14:39 ` Lennert Buytenhek
2007-05-29 3:06 ` James Bottomley
2007-05-29 3:15 ` Lennert Buytenhek
2007-05-29 14:32 ` James Bottomley
2007-05-29 17:13 ` Russell King
2007-05-29 5:58 ` David Miller
2007-05-28 15:04 ` Russell King
2007-05-29 15:42 ` Lennert Buytenhek
2007-05-28 12:33 ` Lennert Buytenhek
2007-05-28 14:22 ` James Bottomley [this message]
2007-05-28 12:38 ` Lennert Buytenhek
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