> + if (blk_rq_nr_phys_segments(req) != 2)
> + return BLK_STS_IOERR;
The magic number of segments adding up source and dest really need
constants and helpers to make the code understandable.
> + /* +1 shift as dst+src length is added in request merging, we send copy
> + *
Current design only supports single source range.
We receive a request with REQ_OP_COPY_DST.
Parse this request which consists of dst(1st) and src(2nd) bios.
Form a copy command (TP 4065)
trace event support for nvme_copy_cmd.
Set the device copy limits to queue limits.
Signed-off-by: Kanchan Jos
