drivers/md/dm-clone-target.c

77 	sector_t region_size;
293 	*rs = dm_sector_div_up(bio->bi_iter.bi_sector, clone->region_size);
305 	return (bio_data_dir(bio) == WRITE && bio_sectors(bio) == clone->region_size);
796 	sector_t tail_size, region_size, total_size;
803 	region_size = clone->region_size;
812 		 * region_size.
814 		tail_size = clone->ti->len & (region_size - 1);
816 			tail_size = region_size;
818 		tail_size = region_size;
1465 		       (unsigned long long)clone->region_size,
1634 	unsigned int region_size;
1641 	r = dm_read_arg(&arg, as, &region_size, error);
1646 	if (!is_power_of_2(region_size)) {
1652 	if (region_size % (bdev_logical_block_size(clone->source_dev->bdev) >> 9) ||
1653 	    region_size % (bdev_logical_block_size(clone->dest_dev->bdev) >> 9)) {
1658 	clone->region_size = region_size;
1814 	clone->region_shift = __ffs(clone->region_size);
1815 	nr_regions = dm_sector_div_up(ti->len, clone->region_size);
1830 	r = dm_set_target_max_io_len(ti, clone->region_size);
1846 					    clone->region_size);
2031 	else if (dest_limits->max_discard_sectors < clone->region_size)
2048 		limits->discard_granularity = clone->region_size << SECTOR_SHIFT;
2050 							    clone->region_size);
2074 	if (io_opt_sectors < clone->region_size ||
2075 	    do_div(io_opt_sectors, clone->region_size)) {
2076 		limits->io_min = clone->region_size << SECTOR_SHIFT;
2077 		limits->io_opt = clone->region_size << SECTOR_SHIFT;