hfs_bmap_reserve
res = hfs_bmap_reserve(tree, 1);
extern int hfs_bmap_reserve(struct hfs_btree *tree, u32 rsvd_nodes);
err = hfs_bmap_reserve(fd.tree, 2 * fd.tree->depth);
err = hfs_bmap_reserve(src_fd.tree, 2 * src_fd.tree->depth);
res = hfs_bmap_reserve(fd->tree, fd->tree->depth + 1);
err = hfs_bmap_reserve(fd.tree, fd.tree->depth + 1);
err = hfs_bmap_reserve(fd.tree, fd.tree->depth);
err = hfs_bmap_reserve(fd.tree, fd.tree->depth + 1);
res = hfs_bmap_reserve(tree, 1);
err = hfs_bmap_reserve(fd.tree, 2 * fd.tree->depth);
err = hfs_bmap_reserve(fd.tree, 2 * (int)fd.tree->depth - 2);
err = hfs_bmap_reserve(src_fd.tree, 4 * (int)src_fd.tree->depth - 1);
res = hfs_bmap_reserve(fd->tree, fd->tree->depth + 1);
int hfs_bmap_reserve(struct hfs_btree *tree, u32 rsvd_nodes);