ntfs_index_iget
ia_vi = ntfs_index_iget(parent_vi, I30, 4);
ia_vi = ntfs_index_iget(VFS_I(dir_ni), I30, 4);
ia_vi = ntfs_index_iget(parent_vi, I30, 4);
ia_vi = ntfs_index_iget(VFS_I(ni), icx->name, icx->name_len);
struct inode *ntfs_index_iget(struct inode *base_vi, __le16 *name,