get_bio_block
if (map_bio(cache, bio, get_bio_block(cache, bio), &commit_needed) == DM_MAPIO_REMAPPED)
dm_oblock_t block = get_bio_block(cache, bio);
dm_block_t block = get_bio_block(tc, bio);
dm_block_t block = get_bio_block(tc, bio);
dm_block_t block = get_bio_block(tc, bio);
dm_block_t block = get_bio_block(tc, bio);