From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Tue, 25 Aug 2009 00:24:45 +0000 (+0200)
Subject: kill-the-bkl/reiserfs: fix "reiserfs lock" / "inode mutex" lock inversion dependency
X-Git-Tag: v2.6.33-rc1~360^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ae635c0bbd6c10aa62bf5149c6f41add59fbf4d2;p=pandora-kernel.git

kill-the-bkl/reiserfs: fix "reiserfs lock" / "inode mutex" lock inversion dependency

reiserfs_xattr_init is called with the reiserfs write lock held, but
if the ".reiserfs_priv" entry is not created, we take the superblock
root directory inode mutex until .reiserfs_priv is created.

This creates a lock dependency inversion against other sites such as
reiserfs_file_release() which takes an inode mutex and the reiserfs
lock after.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Alexander Beregalov <a.beregalov@gmail.com>
Cc: Laurent Riffard <laurent.riffard@free.fr>
---

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