[$] The state of the page in 2025

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