idx_to_header
tmp_header = idx_to_header(chunk, header->next_index);
tmp_header = idx_to_header(chunk, header->prev_index);
tmp_header = idx_to_header(chunk, header->next_index);
if (idx_to_header(chunk, chunk->freelists[order]) == header)
header = idx_to_header(chunk, idx);
header = idx_to_header(chunk, retidx);
next_header = idx_to_header(chunk, header->next_index);
header = idx_to_header(chunk, idx);
tmp_header = idx_to_header(chunk, tmpidx);
header = idx_to_header(chunk, idx);
buddy_header = idx_to_header(chunk, buddy_idx);
buddy_header = idx_to_header(chunk, buddy_idx);
header = idx_to_header(chunk, idx);