blk_op_str
EXPORT_SYMBOL_GPL(blk_op_str);
const char *op_str = blk_op_str(op);
blk_op_str(req_op(req)),
blk_op_str(__entry->op),
nvmeq->qid, blk_op_str(req_op(req)), req_op(req),
blk_op_str(op), z->z_sector, ret);
blk_op_str(__entry->op), __entry->sector,
extern const char *blk_op_str(enum req_op op);
#define show_bio_op(op) blk_op_str(op)