This demonstrates the typical arrogance of upstream Linux developers - a human-imposed limit without any explanation.

AFAIK a `struct i2c_msg` is only 16 bytes on x86_64 platforms and 42 of them don't even occupy 1/4 of PAGE_SIZE. A large value can be useful for polling something like a PCA9555 or MCP23017.

It's bullshit. Not sorry.