What is the latest file system in Linux?

Related questions

1. What is jfs2 file system?
2. Can we reduce logical volume of formatted with XFS?
3. Can you shrink XFS?
4. How do I delete in terminal?
5. What is Btrfs file system?

Tags

1. #preferred
2. #special
3. #widely
4. #certain
5. #reiserfs
6. #linux
7. #system