ntfs_inode_free_space
if (ntfs_inode_free_space(base_ni, mp_size -
err = ntfs_inode_free_space(base_ni, sizeof(struct attr_record));
if (ntfs_inode_free_space(ni, (int)attr_al_len)) {
int ntfs_inode_free_space(struct ntfs_inode *ni, int size);