27 static void cleanup_unstripe(struct unstripe_c *uc, struct dm_target *ti)  in cleanup_unstripe()  argument
29 	if (uc->dev)  in cleanup_unstripe()
30 		dm_put_device(ti, uc->dev);  in cleanup_unstripe()
31 	kfree(uc);  in cleanup_unstripe()
40 	struct unstripe_c *uc;  in unstripe_ctr()  local
50 	uc = kzalloc(sizeof(*uc), GFP_KERNEL);  in unstripe_ctr()
51 	if (!uc) {  in unstripe_ctr()
56 	if (kstrtouint(argv[0], 10, &uc->stripes) || !uc->stripes) {  in unstripe_ctr()
61 	if (kstrtouint(argv[1], 10, &uc->chunk_size) || !uc->chunk_size) {  in unstripe_ctr()
66 	if (kstrtouint(argv[2], 10, &uc->unstripe)) {  in unstripe_ctr()
71 	if (uc->unstripe > uc->stripes && uc->stripes > 1) {  in unstripe_ctr()
76 	if (dm_get_device(ti, argv[3], dm_table_get_mode(ti->table), &uc->dev)) {  in unstripe_ctr()
85 	uc->physical_start = start;  in unstripe_ctr()
87 	uc->unstripe_offset = uc->unstripe * uc->chunk_size;  in unstripe_ctr()
88 	uc->unstripe_width = (uc->stripes - 1) * uc->chunk_size;  in unstripe_ctr()
89 	uc->chunk_shift = is_power_of_2(uc->chunk_size) ? fls(uc->chunk_size) - 1 : 0;  in unstripe_ctr()
92 	if (sector_div(tmp_len, uc->chunk_size)) {  in unstripe_ctr()
97 	if (dm_set_target_max_io_len(ti, uc->chunk_size)) {  in unstripe_ctr()
102 	ti->private = uc;  in unstripe_ctr()
105 	cleanup_unstripe(uc, ti);  in unstripe_ctr()
111 	struct unstripe_c *uc = ti->private;  in unstripe_dtr()  local
113 	cleanup_unstripe(uc, ti);  in unstripe_dtr()
118 	struct unstripe_c *uc = ti->private;  in map_to_core()  local
123 	if (uc->chunk_shift)  in map_to_core()
124 		tmp_sector >>= uc->chunk_shift;  in map_to_core()
126 		sector_div(tmp_sector, uc->chunk_size);  in map_to_core()
128 	sector += uc->unstripe_width * tmp_sector;  in map_to_core()
131 	return sector + uc->unstripe_offset;  in map_to_core()
136 	struct unstripe_c *uc = ti->private;  in unstripe_map()  local
138 	bio_set_dev(bio, uc->dev->bdev);  in unstripe_map()
139 	bio->bi_iter.bi_sector = map_to_core(ti, bio) + uc->physical_start;  in unstripe_map()
147 	struct unstripe_c *uc = ti->private;  in unstripe_status()  local
156 		       uc->stripes, (unsigned long long)uc->chunk_size, uc->unstripe,  in unstripe_status()
157 		       uc->dev->name, (unsigned long long)uc->physical_start);  in unstripe_status()
169 	struct unstripe_c *uc = ti->private;  in unstripe_iterate_devices()  local
171 	return fn(ti, uc->dev, uc->physical_start, ti->len, data);  in unstripe_iterate_devices()
177 	struct unstripe_c *uc = ti->private;  in unstripe_io_hints()  local
179 	limits->chunk_sectors = uc->chunk_size;  in unstripe_io_hints()