On 16/11/18 01:37, Bart Van Assche wrote: > All user space interfaces in the Linux kernel for storage that I'm familiar > with not only allow configuration of parameters but also make it easy to > query which parameters have been configured. The existing sysfs and configfs > interfaces demonstrate this. Using BPF to configure SG/IO access has a > significant disadvantage, namely that it is very hard to figure out what has > been configured. Figuring out what has been configured namely requires > disassembling BPF. I'm not sure anyone will be enthusiast about this. Well, that's a problem with BPF in general. With great power comes great obscurability. Paolo