XFS filesystem maintainer Darrick Wong summarizes
the significant XFS developments from the last year. “The year
2038 poses a special problem for Linux — any signed 32-bit seconds counter
will overflow back to 1901. Work is underway in the kernel to extend all of
those counters to support 64-bit counters fully. In 2020, we will begin
work on extending XFS’s metadata (primarily inode timestamps and quota
expiration timer) to support timestamps out to the year 2486. It should be
possible to upgrade to existing V5 filesystems.“

Source: LWN.net – Wong: XFS – 2019 Development Retrospective