ocfs2_inode_lock_tracker
had_lock = ocfs2_inode_lock_tracker(inode, &bh, 1, &oh);
had_lock = ocfs2_inode_lock_tracker(inode, &di_bh, 0, &oh);
int ocfs2_inode_lock_tracker(struct inode *inode,
had_lock = ocfs2_inode_lock_tracker(inode, &bh, 1, &oh);
had_lock = ocfs2_inode_lock_tracker(inode, NULL, 0, &oh);
had_lock = ocfs2_inode_lock_tracker(new_orphan_inode, NULL, 1,
had_lock = ocfs2_inode_lock_tracker(inode, &di_bh, 0, &oh);
had_lock = ocfs2_inode_lock_tracker(inode, &di_bh, 1, &oh);