[$] Prerequisites for large anonymous folios

The work to add support for <a href="https://lwn.net/Articles/937239/" rel="nofollow">large anonymous
folios</a> to the kernel has been underway for some time, but this feature
has not yet landed in the mainline.  The author of this work, Ryan Roberts,
has been trying to get a handle on what the remaining obstacles are so he
can address them.  On September 6, an online meeting of
memory-management developers discussed that topic and made some progress;
there is still some work to do, though, before large anonymous folios can
go upstream.

https://lwn.net/Articles/943758/