linux-kernel - Re: [PATCH 0/5] reiserfs lock inversion fixes on xattr

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Date:	Fri, 1 Jan 2010 10:29:44 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Christian Kujau <lists@...dbynature.de>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Alexander Beregalov <a.beregalov@...il.com>,
	Chris Mason <chris.mason@...cle.com>,
	reiserfs-devel@...r.kernel.org
Subject: Re: [PATCH 0/5] reiserfs lock inversion fixes on xattr


* Christian Kujau <lists@...dbynature.de> wrote:

> On Wed, 30 Dec 2009 at 21:42, Frederic Weisbecker wrote:
> > I hope you can give it a try (and/or review) before I send the whole
> > to Linus.
> 
> Without your patches, "dbench -x" was pretty much instantly causing the 
> threads to lock up, forcing me to reboot the box. With LOCKDEP enabled, 
> warnings were printed. After applying your patches (and a reboot) I've run 
> "dbench -x" for quite a while now with different runtimes and number of
> clients and it's not locking up any more. I've tested with:
> 
> CONFIG_REISERFS_FS=y
> CONFIG_REISERFS_CHECK=y
> CONFIG_REISERFS_PROC_INFO=y
> CONFIG_REISERFS_FS_XATTR=y
> CONFIG_REISERFS_FS_POSIX_ACL=y
> # CONFIG_REISERFS_FS_SECURITY is not set
> 
> ...and a few "Kernel hacking" options set. Full config and dmesg:
> 
>    http://nerdbynature.de/bits/2.6.33-rc1/reiserfs/t3/
> 
>    (although I'm not really testing -rc1 but latest mainline -git
>     and your changes pulled)
> 
> So, feel free to add:
> 
>   Tested-by: Christian Kujau <lists@...dbynature.de>

Frederic, i'd suggest you send this tree to Linus with Christian's tested-by 
tags added ASAP - we better have these fixes in -rc3.

Thanks,

	Ingo
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