Comment 30 for bug 607560

This problem seems to be occurring on Arch as well. There is a thread about it here [url]https://bbs.archlinux.org/viewtopic.php?id=113516[/url], which links to a kernel patch that may solve the issue:
[url=http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=e44718318004a5618d1dfe2d080e2862532d8e5f]jbd2: call __jbd2_log_start_commit with j_state_lock write locked[/url]