compute_area_page_commitment
const off_t areaCommit = compute_area_page_commitment(area) * B_PAGE_SIZE;
const off_t secondCommit = compute_area_page_commitment(secondArea) * B_PAGE_SIZE;
const size_t newPageCommitment = compute_area_page_commitment(target);
newCommitment = (compute_area_page_commitment(area) * B_PAGE_SIZE)
const size_t newCommitmentPages = compute_area_page_commitment(area);
const size_t newCommitmentPages = compute_area_page_commitment(area);