Function pagecache_path_is_pseudo_fs

src/os/linux/pagecache.cpp:173–185

}

bool pagecache_path_is_pseudo_fs(std::string_view fs) {
    static constexpr std::string_view kPseudo[] = {
        "sysfs", "proc", "procfs", "cgroup", "cgroup2",
        "securityfs", "debugfs", "tracefs", "configfs",
        "bpf", "pstore", "efivarfs", "devtmpfs", "devpts",
        "tmpfs", "mqueue", "hugetlbfs", "autofs", "rpc_pipefs",
        "fusectl", "fuse", "selinuxfs", "nsfs", "binfmt_misc"
    };
    for (auto p : kPseudo) {
        if (fs == p) return true;
    }
    return false;
}

// xarray entry tagging — bits 0..1 form an enum:
//   00 → leaf (real pointer to a folio)