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

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Message-ID: <20100102014003.GA5238@nowhere>
Date:	Sat, 2 Jan 2010 02:40:06 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Christian Kujau <lists@...dbynature.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Alexander Beregalov <a.beregalov@...il.com>,
	Chris Mason <chris.mason@...cle.com>,
	Ingo Molnar <mingo@...e.hu>, reiserfs-devel@...r.kernel.org
Subject: Re: [PATCH 0/5] reiserfs lock inversion fixes on xattr

On Wed, Dec 30, 2009 at 10:32:04PM -0800, Christian Kujau 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>


Great, I've added this to the xattr related commits,
thanks a lot!


> 
> I can't help with the code review though :-\


Don't worry, both testing and review are very precious
and appreciated!

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