step_into        1820 fs/namei.c     	return step_into(nd, &path, flags, inode, seq);
step_into        2667 fs/namei.c     	return step_into(nd, &path, 0, d_backing_inode(path.dentry), 0);
step_into        3376 fs/namei.c     	error = step_into(nd, &path, 0, inode, seq);