din_xferp 55 block/bsg-lib.c uptr64(hdr->din_xferp), hdr->din_xfer_len, din_xferp 175 block/bsg.c ret = blk_rq_map_user(q, rq, NULL, uptr64(hdr.din_xferp), din_xferp 44 include/uapi/linux/bsg.h __u64 din_xferp; /* [i], [*o] */