bio_trim
EXPORT_SYMBOL_GPL(bio_trim);
bio_trim(new_orig, 0, io->sectors);
bio_trim(clone, off >> SECTOR_SHIFT, len >> SECTOR_SHIFT);
bio_trim(bio, io->sectors, ci.sector_count);
bio_trim(wbio, sector - r1_bio->sector, sectors);
bio_trim(wbio, sector - bio->bi_iter.bi_sector, sectors);
bio_trim(bio, start_idx * PAGE_SECTORS,
bio_trim(bio, start_idx * PAGE_SECTORS,
void bio_trim(struct bio *bio, sector_t offset, sector_t size);