I would like to utilize the performance of tmpfs/ramfs for some file operations, but the programs/processes that use these files assume a case-insensitive file system. I cannot find any documentation for tmpfs/ramfs options that would allow case-insensitivity (which I completely expect).

Are there other methods for achieving similar results? [How] can I get a case-insensitive tmpfs/ramfs?

(Note: Looking for answers for RHEL/CentOS 7, but could easily switch to another distro if it has a good solution.)