The past few Linux kernel cycles there has been experimental support for large folios with Btrfs while for Linux 7.2 it looks like this modern file-system will be taking things further with huge folios.

SUSE engineer Qu Wenruo has been working through huge folios support for Btrfs to support up to a 2MB folio size.

Similar to the large folios, huge folios can help Btrfs in achieving greater I/O throughput and reduced system overhead while providing for better memory management.

The patches introducing huge folios for Btrfs have made it into David Sterba's kdave/linux.git's for-next Git branch . With the work now in the Btrfs' "for-next" Git branch, they should be submitted as part of the upcoming Linux 7.2 merge window.