| afs-cons(dirs, files), inode.ino ∈ files, files0 = files, m + n1 ≤ # buf, n0 + n1 ≤ VFS_PAGE_SIZE, ((inode.ino =>mkfile(n2, md, m1, σ) * F))(files) ⊦ [vfs_writepage#(inode, n, buf, m, n0, n1, dirs; err, files, asynced)] ( err = ESUCCESS ∧ ((inode.ino =>mkfile(n2, md, m1, (σ to n * VFS_PAGE_SIZE + n0) + ((⌜buf⌝ from m) to n1) + (σ from n * VFS_PAGE_SIZE + n0 + n1)) * F) )(files) ∨ ⌊err⌋ ∧ files0 = files) |
files0 = files, ((inode.ino =>mkfile(n2, md, m1, σ) * F))(files), afs-cons(dirs, files), inode.ino ∈ files, n0 + n1 ≤ VFS_PAGE_SIZE, m + n1 ≤ # buf ⊦ [vfs_writepage#(inode, n, buf, m, n0, n1, dirs; err, files, asynced)] ( err = ESUCCESS ∧ ((inode.ino =>mkfile(n2, md, m1, (σ to n * VFS_PAGE_SIZE + n0) + ((⌜buf⌝ from m) to n1) + (σ from n * VFS_PAGE_SIZE + n0 + n1)) * F) )(files) ∨ ⌊err⌋ ∧ files0 = files)