| n0 < # avol ∧ avol[n0].mapped? → # avol[n0].data ≤ LEB_SIZE ∧ (buffered(n0) ≠ bleb → is-aligned(# avol[n0].data, EB_PAGE_SIZE)), bleb ≠ nobuffer → bleb.leb < # avol ∧ avol[bleb.leb].mapped? ⊦ bleb = buffered(n), buffered(n0) = bleb, ( n0 < # avol ∧ avol[n, unmapped][n0].mapped? → # avol[n0].data ≤ LEB_SIZE ∧ (buffered(n0) ≠ bleb → is-aligned(# avol[n0].data, EB_PAGE_SIZE))) ∧ (bleb ≠ nobuffer → bleb.leb < # avol ∧ avol[n, unmapped][bleb.leb].mapped?) |
bleb ≠ nobuffer → bleb.leb < # avol ∧ avol[bleb.leb].mapped?, n0 < # avol ∧ avol[n0].mapped? → # avol[n0].data ≤ LEB_SIZE ∧ is-aligned(# avol[n0].data, EB_PAGE_SIZE) ⊦ bleb = buffered(n), buffered(n0) = bleb, (n0 < # avol ∧ avol[n, unmapped][n0].mapped? → # avol[n0].data ≤ LEB_SIZE ∧ is-aligned(# avol[n0].data, EB_PAGE_SIZE)) ∧ (bleb ≠ nobuffer → bleb.leb < # avol ∧ avol[n, unmapped][bleb.leb].mapped?)