| # avol0 = # avol1, # lpt0 = # avol1, # buf = EB_PAGE_SIZE, m4 < # avol1, abs(avol1, bleb0, mkwbuf(buf, m3, m2), avol0, rofs), awbuf-inv(avol1, bleb0), ebm-vol-inv(avol0), synced(avol1), bleb0 ≠ nobuffer → bleb0.leb < # avol1 ∧ wbuf-cons(mkwbuf(buf, m3, m2), avol0[bleb0.leb], rofs), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪err := err0; if err = ESUCCESS then avol0[m4] := mapped(mkbuf(0)) else {skip or avol0[m4] := unmapped}⟫ ⟨awbuf_remap#(m4, adr0, m1, plog0, lpt0, ns0, bleb0, rofs; avol1; err1)⟩ (abs(avol1, bleb0, mkwbuf(buf, m3, m2), avol0, rofs) ∧ err = err1), buffered(m4) = bleb0 |
# buf = EB_PAGE_SIZE, # lpt0 = # avol1, # avol0 = # avol1, err = err0, m4 < # avol1, abs(avol1, bleb0, mkwbuf(buf, m3, m2), avol0, rofs), awbuf-inv(avol1, bleb0), ebm-vol-inv(avol0), synced(avol1), bleb0 ≠ nobuffer → bleb0.leb < # avol1 ∧ wbuf-cons(mkwbuf(buf, m3, m2), avol0[bleb0.leb], rofs), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪if err = ESUCCESS then avol0[m4] := mapped(mkbuf(0)) else {skip or avol0[m4] := unmapped}⟫ ⟨awbuf_remap#(m4, adr0, m1, plog0, lpt0, ns0, bleb0, rofs; avol1; err1)⟩ (abs(avol1, bleb0, mkwbuf(buf, m3, m2), avol0, rofs) ∧ err = err1), buffered(m4) = bleb0