ntfs_get_bh
err = ntfs_get_bh(sbi, run, vbo, rs, &nb);
err = ntfs_get_bh(ni->mi.sbi, &indx->alloc_run, vbo, bytes, &r->nb);
int ntfs_get_bh(struct ntfs_sb_info *sbi, const struct runs_tree *run, u64 vbo,
err = ntfs_get_bh(sbi, &ni->file.run, vbo, sbi->record_size,