The folio project is not yet two years old,
but it has already resulted in
significant changes to the kernel’s memory-management and filesystem
layers. While much work has been done, quite a bit remains. In the
opening plenary session at the 2022 Linux Storage,
Filesystem, Memory-management and BPF Summit, Matthew Wilcox provided
an update on the folio transition and led a discussion on the work that
remains to be done.

Source: LWN.net – [$] A memory-folio update