| # avol1 = # avol0, avol0[n] = mapped(buf), # buf0 < EB_PAGE_SIZE, n < # avol0, is-aligned(# buf, EB_PAGE_SIZE) ⊦ (∀ n0. n0 < # avol0 → ( avol0[n, mapped(buf + buf0)][n0].mapped? → avol1[n0] = mapped(subarray(avol0[n, mapped(buf + buf0)][n0].data, 0, align↓(# avol0[n, mapped(buf + buf0)][n0].data, EB_PAGE_SIZE)))) ∧ ( ¬ avol0[n, mapped(buf + buf0)][n0].mapped? ∧ avol1[n0].mapped? → # avol1[n0].data ≤ LEB_SIZE ∧ is-aligned(# avol1[n0].data, EB_PAGE_SIZE))) ↔ (∀ n0. n0 < # avol0 → (avol0[n0].mapped? → avol1[n0] = mapped(subarray(avol0[n0].data, 0, align↓(# avol0[n0].data, EB_PAGE_SIZE)))) ∧ (¬ avol0[n0].mapped? ∧ avol1[n0].mapped? → # avol1[n0].data ≤ LEB_SIZE ∧ is-aligned(# avol1[n0].data, EB_PAGE_SIZE))) |
# avol1 = # avol0, avol0[n] = mapped(buf), n < # avol0, # buf0 < EB_PAGE_SIZE, is-aligned(# buf, EB_PAGE_SIZE), ∀ n0. n0 < # avol0 → ( avol0[n, mapped(buf + buf0)][n0].mapped? → avol1[n0] = mapped(subarray(avol0[n, mapped(buf + buf0)][n0].data, 0, align↓(# avol0[n, mapped(buf + buf0)][n0].data, EB_PAGE_SIZE)))) ∧ ( ¬ avol0[n, mapped(buf + buf0)][n0].mapped? ∧ avol1[n0].mapped? → # avol1[n0].data ≤ LEB_SIZE ∧ is-aligned(# avol1[n0].data, EB_PAGE_SIZE)) ⊦ ∀ n0. n0 < # avol0 → (avol0[n0].mapped? → avol1[n0] = mapped(subarray(avol0[n0].data, 0, align↓(# avol0[n0].data, EB_PAGE_SIZE)))) ∧ (¬ avol0[n0].mapped? ∧ avol1[n0].mapped? → # avol1[n0].data ≤ LEB_SIZE ∧ is-aligned(# avol1[n0].data, EB_PAGE_SIZE))
# avol1 = # avol0, avol0[n] = mapped(buf), n < # avol0, # buf0 < EB_PAGE_SIZE, is-aligned(# buf, EB_PAGE_SIZE), ∀ n0. n0 < # avol0 → (avol0[n0].mapped? → avol1[n0] = mapped(subarray(avol0[n0].data, 0, align↓(# avol0[n0].data, EB_PAGE_SIZE)))) ∧ (¬ avol0[n0].mapped? ∧ avol1[n0].mapped? → # avol1[n0].data ≤ LEB_SIZE ∧ is-aligned(# avol1[n0].data, EB_PAGE_SIZE)) ⊦ ∀ n0. n0 < # avol0 → ( avol0[n, mapped(buf + buf0)][n0].mapped? → avol1[n0] = mapped(subarray(avol0[n, mapped(buf + buf0)][n0].data, 0, align↓(# avol0[n, mapped(buf + buf0)][n0].data, EB_PAGE_SIZE)))) ∧ ( ¬ avol0[n, mapped(buf + buf0)][n0].mapped? ∧ avol1[n0].mapped? → # avol1[n0].data ≤ LEB_SIZE ∧ is-aligned(# avol1[n0].data, EB_PAGE_SIZE))