I DID install Ubuntu with kernel 3.19 version and module of NVMe SSD Device Driver, following the document from Intel manual....
As I expected, the function on nvme-core.c like issue... were called, when I read or write to the NVMe device.....
But when I tried to do that, the function call were not called (I tested fio benchmark.. and make write request to the directory mounted with the NVMe SSD)
Idk why that driver code wasn't called...
Anybody know the function path of write or read to the NVMe device???