'The Linux 5.10 kernel's XFS file-system will have two new on-disk
meta-data capabilities, reports Phoronix:
1. The size of inode btrees in the allocation group is now recorded.
This is for increasing redundancy checks and also allowing faster
2. Support for timestamps now until the year 2486.
This "big timestamps" feature is the refactoring of their timestamp
and inode encoding functions to handle timestamps as a 64-bit
nanosecond counter and bit shifting to increase the effective size.
This now allows XFS to run well past the Year 2038 problem (where
storing the time since 1970 in seconds will no longer fit in a signed
32-bit integer and thus wraparound) to now the Year 2486. Making a new
XFS file-system with bigtime enabled allows a timestamp range from
December 1901 to July 2486 rather than December 1901 to January 2038.
For preserving backwards compatibility, the big timestamps feature is
not currently enabled by default. '
-- source: https://linux.slashdot.org/story/20/10/17/2237236
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