[$] The state of the page in 2025

The folio transition is one of the mostfundamental kernel changes ever made; it can be thought of as being similarto replacing the foundation of a building while it remains open forbusiness. So it is not surprising that, for some years, the annual LinuxStorage, Filesystem, Memory-Management, and BPF Summit has included asession on the state of this transition. The 2025 Summit was no exception,with Matthew Wilcox updating the group on what has been accomplished, whatremains to be done, and where some of the significant problems are.