Merge "jbd2: Fix use after free in kjournald2()"

	goto loop;

end_loop:

	write_unlock(&journal->j_state_lock);

	del_timer_sync(&journal->j_commit_timer);

	journal->j_task = NULL;

	wake_up(&journal->j_wait_done_commit);

	jbd_debug(1, "Journal thread exiting.\n");

	write_unlock(&journal->j_state_lock);

	return 0;

}