static int simdisk_xfer_bio(struct simdisk *dev, struct bio *bio)
{
int i;
struct bio_vec *bvec;
sector_t sector = bio->bi_iter.bi_sector;
bio_for_each_segment(bvec, bio, i) {
char *buffer = __bio_kmap_atomic(bio, i, KM_USER0);
unsigned len = bvec->bv_len >> SECTOR_SHIFT;
simdisk_transfer(dev, sector, len, buffer,
bio_data_dir(bio) == WRITE);
sector += len;
__bio_kunmap_atomic(bio, KM_USER0);
}
static blk_qc_t simdisk_make_request(struct request_queue *q, struct bio *bio)
{
struct simdisk *dev = q->queuedata;
struct bio_vec bvec;
struct bvec_iter iter;
sector_t sector = bio->bi_iter.bi_sector;
bio_for_each_segment(bvec, bio, iter) {
char *buffer = __bio_kmap_atomic(bio, iter);
unsigned len = bvec.bv_len >> SECTOR_SHIFT;
simdisk_transfer(dev, sector, len, buffer,
bio_data_dir(bio) == WRITE);
sector += len;
__bio_kunmap_atomic(buffer);
}
