Collabora continues to be very active in the development of the Linux kernel and during the development cycle of the Linux 5.2 kernel series, a total of 11 kernel engineers authored no less than 61 patches, signed-off on a total of 131 changes, tested 47 fixes, acknowledged another 9 patches, and suggested 4 changes implemented by other kernel developers. However, the most important contribution made by Collabora to Linux kernel 5.2 is the implementation of case-insensitive functionality for the EXT4 file system, which is used by default by almost all GNU/Linux distributions. This change will provide major performance improvements for various emulated programs, such as games running in Wine.