Case-Insensitive OverlayFS Support Merged for Linux 6.18
6 hours ago
- #OverlayFS
- #Linux
- #Case-Insensitive
- Case-insensitive files and folder support has been added to OverlayFS in Linux 6.18.
- André Almeida with Igalia led the development of case-fold layer support for container tooling.
- All layers in OverlayFS must have the same encoding settings (e.g., Unicode version and flags) for case-folding to work.
- OverlayFS uses a red-black tree to manage casefolded dentry names while preserving original filenames for user display.
- The implementation ensures consistency with user-created filenames (e.g., 'Picture.PNG' remains as is).
- Mount restrictions preventing case-insensitive filesystems from being mounted have been dropped.