Oracle has been a prolific contributor to the Linux kernel. https://blogs.oracle.com/linux/post/oracle-is-the-1-contributor-to-the-linux-kernel https://blogs.o

Oracle has been a prolific contributor to the Linux kernel. https://blogs.oracle.com/linux/post/oracle-is-the-1-contributor-to-the-linux-kernel https://blogs.oracle.com/linux/post/oracle-is-the-1-contribu... XFS is really important for (their) database performance, so quite a lot comes out of Oracle for it. You might also know that btrfs began at Oracle. https://www.google.com/search?q=oracle+blog+xfs https://www.google.com/search?q=oracle+blog+xfs https://en.wikipedia.org/wiki/Btrfs https://en.wikipedia.org/wiki/Btrfs "Chris Mason, an engineer working on ReiserFS for SUSE at the time, joined Oracle later that year and began work on a new file system based on these B-trees."