"Chris Mason is the founding developer of btrfs, which he began working on in 2007 while working at Oracle. This leads many people to believe that btrfs is an Oracle project—it is not. The project belonged to Mason, not to his employer, and it remains a community project unencumbered by corporate ownership to this day."
It shows belonging, at the very least. The quote from Jim Salter was "The project belonged to Mason, not to his employer" (emphasis added). The copyright line demonstrably and incontestably refutes this claim. btrfs belongs to Oracle.
https://arstechnica.com/gadgets/2021/09/examining-btrfs-linu...