45 	pr_debug("md: RAID0 configuration for %s - %d zone%s\n",  in dump_zones()
55 		pr_debug("md: zone%d=[%s]\n", j, line);  in dump_zones()
58 		pr_debug("      zone-offset=%10lluKB, device-offset=%10lluKB, size=%10lluKB\n",  in dump_zones()
71 	struct strip_zone *zone;  in create_strip_zones()  local
157 	/* The first zone must contain all devices, so here we check that  in create_strip_zones()
160 	zone = &conf->strip_zone[0];  in create_strip_zones()
208 	zone->nb_dev = cnt;  in create_strip_zones()
209 	zone->zone_end = smallest->sectors * cnt;  in create_strip_zones()
211 	curr_zone_end = zone->zone_end;  in create_strip_zones()
218 		zone = conf->strip_zone + i;  in create_strip_zones()
221 		pr_debug("md/raid0:%s: zone %d\n", mdname(mddev), i);  in create_strip_zones()
222 		zone->dev_start = smallest->sectors;  in create_strip_zones()
228 			if (rdev->sectors <= zone->dev_start) {  in create_strip_zones()
248 		zone->nb_dev = c;  in create_strip_zones()
249 		sectors = (smallest->sectors - zone->dev_start) * c;  in create_strip_zones()
250 		pr_debug("md/raid0:%s: zone->nb_dev: %d, sectors: %llu\n",  in create_strip_zones()
252 			 zone->nb_dev, (unsigned long long)sectors);  in create_strip_zones()
255 		zone->zone_end = curr_zone_end;  in create_strip_zones()
257 		pr_debug("md/raid0:%s: current zone start: %llu\n",  in create_strip_zones()
271 		pr_err("md/raid0:%s: cannot assemble multi-zone RAID0 with default_layout setting\n",  in create_strip_zones()
283 			zone = conf->strip_zone + i;  in create_strip_zones()
284 			/* disk_shift is first disk index used in the zone */  in create_strip_zones()
285 			zone->disk_shift = sector_div(first_sector,  in create_strip_zones()
286 						      zone->nb_dev);  in create_strip_zones()
302 /* Find the zone which holds a particular offset
303  * Update *sectorp to be an offset in that zone
325 static struct md_rdev *map_sector(struct mddev *mddev, struct strip_zone *zone,  in map_sector()  argument
339 		/* chunk in zone */  in map_sector()
342 		sector_div(chunk, zone->nb_dev << chunksect_bits);  in map_sector()
346 		sector_div(chunk, chunk_sects * zone->nb_dev);  in map_sector()
350 	*  real sector = chunk in device + starting of zone  in map_sector()
354 	return conf->devlist[(zone - conf->strip_zone)*raid_disks  in map_sector()
355 			     + sector_div(sector, zone->nb_dev)];  in map_sector()
460 	struct strip_zone *zone;  in raid0_handle_discard()  local
473 	zone = find_zone(conf, &start);  in raid0_handle_discard()
475 	if (bio_end_sector(bio) > zone->zone_end) {  in raid0_handle_discard()
477 				zone->zone_end - bio->bi_iter.bi_sector,  in raid0_handle_discard()
482 		end = zone->zone_end;  in raid0_handle_discard()
488 	if (zone != conf->strip_zone)  in raid0_handle_discard()
489 		end = end - zone[-1].zone_end;  in raid0_handle_discard()
491 	/* Now start and end is the offset in zone */  in raid0_handle_discard()
492 	stripe_size = zone->nb_dev * mddev->chunk_sectors;  in raid0_handle_discard()
499 	/* In the first zone the original and alternate layouts are the same */  in raid0_handle_discard()
500 	if ((conf->layout == RAID0_ORIG_LAYOUT) && (zone != conf->strip_zone)) {  in raid0_handle_discard()
502 		start_disk_index = sector_div(orig_start, zone->nb_dev);  in raid0_handle_discard()
504 						  zone->nb_dev,  in raid0_handle_discard()
505 						  zone->disk_shift);  in raid0_handle_discard()
507 		end_disk_index = sector_div(orig_end, zone->nb_dev);  in raid0_handle_discard()
509 						zone->nb_dev, zone->disk_shift);  in raid0_handle_discard()
523 	for (disk = 0; disk < zone->nb_dev; disk++) {  in raid0_handle_discard()
528 		compare_disk = map_disk_shift(disk, zone->nb_dev,  in raid0_handle_discard()
529 					      zone->disk_shift);  in raid0_handle_discard()
549 		rdev = conf->devlist[(zone - conf->strip_zone) *  in raid0_handle_discard()
552 			dev_start + zone->dev_start + rdev->data_offset,  in raid0_handle_discard()
561 	struct strip_zone *zone;  in raid0_map_submit_bio()  local
568 	zone = find_zone(mddev->private, &sector);  in raid0_map_submit_bio()
571 		tmp_dev = map_sector(mddev, zone, bio_sector, &sector);  in raid0_map_submit_bio()
574 		tmp_dev = map_sector(mddev, zone, sector, &sector);  in raid0_map_submit_bio()
589 	bio->bi_iter.bi_sector = sector + zone->dev_start +  in raid0_map_submit_bio()