NVMET_MAX_INLINE_BIOVEC
if (nr_bvec > NVMET_MAX_INLINE_BIOVEC)
#define NVMET_MAX_INLINE_DATA_LEN NVMET_MAX_INLINE_BIOVEC * PAGE_SIZE
struct bio_vec inline_bvec[NVMET_MAX_INLINE_BIOVEC];
req->sg_cnt <= NVMET_MAX_INLINE_BIOVEC;