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

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Date:	Wed, 30 Dec 2009 21:42:22 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Alexander Beregalov <a.beregalov@...il.com>,
	Chris Mason <chris.mason@...cle.com>,
	Ingo Molnar <mingo@...e.hu>,
	Christian Kujau <lists@...dbynature.de>
Subject: [PATCH 0/5] reiserfs lock inversion fixes on xattr

Hi,

Christian Kujau's use of dbench to test reiserfs xattr has inspired me.
I tried dbench -x yesterday and got various soft-lockups and lockdep
reports.

I fixed all those I've seen in this batch and it passed through 6 hours
of stress testing (if a loop of dbench -x -t 60 20 can be called stress
testing) and things look pretty fine now.

I hope you can give it a try (and/or review) before I send the whole
to Linus.

Thanks!

It's on:

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git
        reiserfs/kill-bkl

How to get it:

git-clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
cd linux-2.6.git
git-pull git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git reiserfs/kill-bkl

Frederic Weisbecker (5):
  reiserfs: Relax lock before open xattr dir in reiserfs_xattr_set_handle()
  reiserfs: Fix unwanted recursive reiserfs lock in reiserfs_unlink()
  reiserfs: Fix journal mutex <-> inode mutex lock inversion
  reiserfs: Safely acquire i_mutex from reiserfs_for_each_xattr
  reiserfs: Safely acquire i_mutex from xattr_rmdir

 fs/reiserfs/namei.c |    7 ++++---
 fs/reiserfs/xattr.c |   20 ++++++++++++++------
 2 files changed, 18 insertions(+), 9 deletions(-)

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