63 	struct dm_target *ti;  member
147 static struct raid_set *context_alloc(struct dm_target *ti, struct raid_type *raid_type, unsigned r…  in context_alloc()  argument
153 		ti->error = "Insufficient number of devices";  in context_alloc()
159 		ti->error = "Cannot allocate raid context";  in context_alloc()
165 	rs->ti = ti;  in context_alloc()
196 			dm_put_device(rs->ti, rs->dev[i].meta_dev);  in context_free()
199 			dm_put_device(rs->ti, rs->dev[i].data_dev);  in context_free()
242 			ret = dm_get_device(rs->ti, argv[0],  in dev_parms()
243 					    dm_table_get_mode(rs->ti->table),  in dev_parms()
245 			rs->ti->error = "RAID metadata device lookup failure";  in dev_parms()
257 				rs->ti->error = "Drive designated for rebuild not specified";  in dev_parms()
261 			rs->ti->error = "No data device supplied with metadata device";  in dev_parms()
268 		ret = dm_get_device(rs->ti, argv[1],  in dev_parms()
269 				    dm_table_get_mode(rs->ti->table),  in dev_parms()
272 			rs->ti->error = "RAID device lookup failure";  in dev_parms()
303 		rs->ti->error = "RAID device lookup failure";  in dev_parms()
322 	unsigned long min_region_size = rs->ti->len / (1 << 21);  in validate_region_size()
341 		if (region_size > rs->ti->len) {  in validate_region_size()
342 			rs->ti->error = "Supplied region size is too large";  in validate_region_size()
349 			rs->ti->error = "Supplied region size is too small";  in validate_region_size()
354 			rs->ti->error = "Region size is not a power of 2";  in validate_region_size()
359 			rs->ti->error = "Region size is smaller than the chunk size";  in validate_region_size()
502 	sector_t sectors_per_dev = rs->ti->len;  in parse_raid_params()
511 		rs->ti->error = "Bad chunk size";  in parse_raid_params()
518 		rs->ti->error = "Chunk size must be a power of 2";  in parse_raid_params()
521 		rs->ti->error = "Chunk size value is too small";  in parse_raid_params()
568 			rs->ti->error = "Wrong number of raid parameters given";  in parse_raid_params()
577 				rs->ti->error = "'raid10_format' is an invalid parameter for this RAID type";  in parse_raid_params()
583 				rs->ti->error = "Invalid 'raid10_format' value given";  in parse_raid_params()
592 			rs->ti->error = "Bad numerical argument given in raid params";  in parse_raid_params()
599 				rs->ti->error = "Invalid rebuild index given";  in parse_raid_params()
607 				rs->ti->error = "write_mostly option is only valid for RAID1";  in parse_raid_params()
611 				rs->ti->error = "Invalid write_mostly drive index given";  in parse_raid_params()
617 				rs->ti->error = "max_write_behind option is only valid for RAID1";  in parse_raid_params()
628 				rs->ti->error = "Max write-behind limit out of range";  in parse_raid_params()
635 				rs->ti->error = "daemon sleep period out of range";  in parse_raid_params()
650 				rs->ti->error = "Inappropriate argument: stripe_cache";  in parse_raid_params()
654 				rs->ti->error = "Bad stripe_cache size";  in parse_raid_params()
660 				rs->ti->error = "min_recovery_rate out of range";  in parse_raid_params()
667 				rs->ti->error = "max_recovery_rate out of range";  in parse_raid_params()
677 				rs->ti->error = "Bad value for 'raid10_copies'";  in parse_raid_params()
684 			rs->ti->error = "Unable to parse RAID parameters";  in parse_raid_params()
697 	if (dm_set_target_max_io_len(rs->ti, max_io_len))  in parse_raid_params()
702 			rs->ti->error = "Not enough devices to satisfy specification";  in parse_raid_params()
711 			rs->ti->error = "Too many copies for given RAID10 format.";  in parse_raid_params()
716 		sectors_per_dev = rs->ti->len * raid10_copies;  in parse_raid_params()
725 		rs->ti->error = "Target length not divisible by number of data devices";  in parse_raid_params()
741 	dm_table_event(rs->ti->table);  in do_table_event()
1008 					rs->ti->error = "Cannot change device "  in super_init_validation()
1065 static int analyse_superblocks(struct dm_target *ti, struct raid_set *rs)  in analyse_superblocks()  argument
1101 				dm_put_device(ti, dev->meta_dev);  in analyse_superblocks()
1120 				dm_put_device(ti, dev->data_dev);  in analyse_superblocks()
1133 		rs->ti->error = "Insufficient redundancy to activate array";  in analyse_superblocks()
1141 	ti->error = "Unable to assemble array: Invalid superblocks";  in analyse_superblocks()
1156 static void configure_discard_support(struct dm_target *ti, struct raid_set *rs)  in configure_discard_support()  argument
1162 	ti->discards_supported = false;  in configure_discard_support()
1189 	ti->discards_supported = true;  in configure_discard_support()
1195 	ti->split_discard_bios = !!(rs->md.level == 1 || rs->md.level == 10);  in configure_discard_support()
1196 	ti->num_discard_bios = 1;  in configure_discard_support()
1208 static int raid_ctr(struct dm_target *ti, unsigned argc, char **argv)  in raid_ctr()  argument
1217 		ti->error = "Too few arguments";  in raid_ctr()
1224 		ti->error = "Unrecognised raid_type";  in raid_ctr()
1232 		ti->error = "Cannot understand number of RAID parameters";  in raid_ctr()
1240 		ti->error = "Arguments do not agree with counts given";  in raid_ctr()
1246 		ti->error = "Cannot understand number of raid devices";  in raid_ctr()
1252 		ti->error = "Supplied RAID devices does not match the count given";  in raid_ctr()
1256 	rs = context_alloc(ti, rt, (unsigned)num_raid_devs);  in raid_ctr()
1271 	ret = analyse_superblocks(ti, rs);  in raid_ctr()
1276 	ti->private = rs;  in raid_ctr()
1277 	ti->num_flush_bios = 1;  in raid_ctr()
1282 	configure_discard_support(ti, rs);  in raid_ctr()
1290 		ti->error = "Fail to run raid array";  in raid_ctr()
1294 	if (ti->len != rs->md.array_sectors) {  in raid_ctr()
1295 		ti->error = "Array size does not match requested target length";  in raid_ctr()
1300 	dm_table_add_target_callbacks(ti->table, &rs->callbacks);  in raid_ctr()
1313 static void raid_dtr(struct dm_target *ti)  in raid_dtr()  argument
1315 	struct raid_set *rs = ti->private;  in raid_dtr()
1322 static int raid_map(struct dm_target *ti, struct bio *bio)  in raid_map()  argument
1324 	struct raid_set *rs = ti->private;  in raid_map()
1357 static void raid_status(struct dm_target *ti, status_type_t type,  in raid_status()  argument
1360 	struct raid_set *rs = ti->private;  in raid_status()
1530 static int raid_message(struct dm_target *ti, unsigned argc, char **argv)  in raid_message()  argument
1532 	struct raid_set *rs = ti->private;  in raid_message()
1584 static int raid_iterate_devices(struct dm_target *ti,  in raid_iterate_devices()  argument
1587 	struct raid_set *rs = ti->private;  in raid_iterate_devices()
1593 			ret = fn(ti,  in raid_iterate_devices()
1602 static void raid_io_hints(struct dm_target *ti, struct queue_limits *limits)  in raid_io_hints()  argument
1604 	struct raid_set *rs = ti->private;  in raid_io_hints()
1612 static void raid_presuspend(struct dm_target *ti)  in raid_presuspend()  argument
1614 	struct raid_set *rs = ti->private;  in raid_presuspend()
1619 static void raid_postsuspend(struct dm_target *ti)  in raid_postsuspend()  argument
1621 	struct raid_set *rs = ti->private;  in raid_postsuspend()
1682 static void raid_resume(struct dm_target *ti)  in raid_resume()  argument
1684 	struct raid_set *rs = ti->private;  in raid_resume()