| ⊦ ino ∈ files ∧ files[ino] = mkfile(m, md, n0, content) → abs-files(files[ino, mkfile(m, md, n1, content)]) = abs-files(files) |
files[ino] = mkfile(m, md, n0, content), ino ∈ files ⊦ abs-files(files[ino, mkfile(m, md, n1, content)]) = abs-files(files)