| buf = (content.stream to m).buf, md0 = md, ino ∈ files ⊦ abs-files(files)[⌜ino⌝ , mkfile(md0, buf)] = abs-files(files[ino, mkfile(m, md, m0, content)]) |
ino ∈ files ⊦ abs-files(files)[⌜ino⌝ , mkfile(md, (content.stream to m).buf)] = abs-files(files[ino, mkfile(m, md, m0, content)])