v7fs_inode_number_sanity
if (v7fs_inode_number_sanity(sb, ino)) {
if ((error = v7fs_inode_number_sanity(sb, inode_number))) {
v7fs_inode_number_sanity(&fs->superblock, n);
int v7fs_inode_number_sanity(const struct v7fs_superblock *, v7fs_ino_t);