I just realised that we probably also want to support FSCONFIG_SET_PATH
I just checked kernel code. Indeed nobody uses FSCONFIG_SET_PATH. Moreover, fsparam_path macro is present since 5.1. And for all this time nobody used it. So, let's just remove FSCONFIG_SET_PATH. Nobody used it, so this will not break anything.
If you okay with that, I can submit patch, removing it.
-- Askar Safin