Lines Matching full:pmd
230 struct dm_pool_metadata *pmd; member
390 static inline void pmd_write_lock_in_core(struct dm_pool_metadata *pmd) in pmd_write_lock_in_core() argument
391 __acquires(pmd->root_lock) in pmd_write_lock_in_core()
393 down_write(&pmd->root_lock); in pmd_write_lock_in_core()
396 static inline void pmd_write_lock(struct dm_pool_metadata *pmd) in pmd_write_lock() argument
398 pmd_write_lock_in_core(pmd); in pmd_write_lock()
399 if (unlikely(!pmd->in_service)) in pmd_write_lock()
400 pmd->in_service = true; in pmd_write_lock()
403 static inline void pmd_write_unlock(struct dm_pool_metadata *pmd) in pmd_write_unlock() argument
404 __releases(pmd->root_lock) in pmd_write_unlock()
406 up_write(&pmd->root_lock); in pmd_write_unlock()
411 static int superblock_lock_zero(struct dm_pool_metadata *pmd, in superblock_lock_zero() argument
414 return dm_bm_write_lock_zero(pmd->bm, THIN_SUPERBLOCK_LOCATION, in superblock_lock_zero()
418 static int superblock_lock(struct dm_pool_metadata *pmd, in superblock_lock() argument
421 return dm_bm_write_lock(pmd->bm, THIN_SUPERBLOCK_LOCATION, in superblock_lock()
454 static void __setup_btree_details(struct dm_pool_metadata *pmd) in __setup_btree_details() argument
456 pmd->info.tm = pmd->tm; in __setup_btree_details()
457 pmd->info.levels = 2; in __setup_btree_details()
458 pmd->info.value_type.context = pmd->data_sm; in __setup_btree_details()
459 pmd->info.value_type.size = sizeof(__le64); in __setup_btree_details()
460 pmd->info.value_type.inc = data_block_inc; in __setup_btree_details()
461 pmd->info.value_type.dec = data_block_dec; in __setup_btree_details()
462 pmd->info.value_type.equal = data_block_equal; in __setup_btree_details()
464 memcpy(&pmd->nb_info, &pmd->info, sizeof(pmd->nb_info)); in __setup_btree_details()
465 pmd->nb_info.tm = pmd->nb_tm; in __setup_btree_details()
467 pmd->tl_info.tm = pmd->tm; in __setup_btree_details()
468 pmd->tl_info.levels = 1; in __setup_btree_details()
469 pmd->tl_info.value_type.context = &pmd->bl_info; in __setup_btree_details()
470 pmd->tl_info.value_type.size = sizeof(__le64); in __setup_btree_details()
471 pmd->tl_info.value_type.inc = subtree_inc; in __setup_btree_details()
472 pmd->tl_info.value_type.dec = subtree_dec; in __setup_btree_details()
473 pmd->tl_info.value_type.equal = subtree_equal; in __setup_btree_details()
475 pmd->bl_info.tm = pmd->tm; in __setup_btree_details()
476 pmd->bl_info.levels = 1; in __setup_btree_details()
477 pmd->bl_info.value_type.context = pmd->data_sm; in __setup_btree_details()
478 pmd->bl_info.value_type.size = sizeof(__le64); in __setup_btree_details()
479 pmd->bl_info.value_type.inc = data_block_inc; in __setup_btree_details()
480 pmd->bl_info.value_type.dec = data_block_dec; in __setup_btree_details()
481 pmd->bl_info.value_type.equal = data_block_equal; in __setup_btree_details()
483 pmd->details_info.tm = pmd->tm; in __setup_btree_details()
484 pmd->details_info.levels = 1; in __setup_btree_details()
485 pmd->details_info.value_type.context = NULL; in __setup_btree_details()
486 pmd->details_info.value_type.size = sizeof(struct disk_device_details); in __setup_btree_details()
487 pmd->details_info.value_type.inc = NULL; in __setup_btree_details()
488 pmd->details_info.value_type.dec = NULL; in __setup_btree_details()
489 pmd->details_info.value_type.equal = NULL; in __setup_btree_details()
492 static int save_sm_roots(struct dm_pool_metadata *pmd) in save_sm_roots() argument
497 r = dm_sm_root_size(pmd->metadata_sm, &len); in save_sm_roots()
501 r = dm_sm_copy_root(pmd->metadata_sm, &pmd->metadata_space_map_root, len); in save_sm_roots()
505 r = dm_sm_root_size(pmd->data_sm, &len); in save_sm_roots()
509 return dm_sm_copy_root(pmd->data_sm, &pmd->data_space_map_root, len); in save_sm_roots()
512 static void copy_sm_roots(struct dm_pool_metadata *pmd, in copy_sm_roots() argument
516 &pmd->metadata_space_map_root, in copy_sm_roots()
517 sizeof(pmd->metadata_space_map_root)); in copy_sm_roots()
520 &pmd->data_space_map_root, in copy_sm_roots()
521 sizeof(pmd->data_space_map_root)); in copy_sm_roots()
524 static int __write_initial_superblock(struct dm_pool_metadata *pmd) in __write_initial_superblock() argument
529 sector_t bdev_size = i_size_read(pmd->bdev->bd_inode) >> SECTOR_SHIFT; in __write_initial_superblock()
534 r = dm_sm_commit(pmd->data_sm); in __write_initial_superblock()
538 r = dm_tm_pre_commit(pmd->tm); in __write_initial_superblock()
542 r = save_sm_roots(pmd); in __write_initial_superblock()
546 r = superblock_lock_zero(pmd, &sblock); in __write_initial_superblock()
559 copy_sm_roots(pmd, disk_super); in __write_initial_superblock()
561 disk_super->data_mapping_root = cpu_to_le64(pmd->root); in __write_initial_superblock()
562 disk_super->device_details_root = cpu_to_le64(pmd->details_root); in __write_initial_superblock()
565 disk_super->data_block_size = cpu_to_le32(pmd->data_block_size); in __write_initial_superblock()
567 return dm_tm_commit(pmd->tm, sblock); in __write_initial_superblock()
570 static int __format_metadata(struct dm_pool_metadata *pmd) in __format_metadata() argument
574 r = dm_tm_create_with_sm(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __format_metadata()
575 &pmd->tm, &pmd->metadata_sm); in __format_metadata()
581 pmd->data_sm = dm_sm_disk_create(pmd->tm, 0); in __format_metadata()
582 if (IS_ERR(pmd->data_sm)) { in __format_metadata()
584 r = PTR_ERR(pmd->data_sm); in __format_metadata()
588 pmd->nb_tm = dm_tm_create_non_blocking_clone(pmd->tm); in __format_metadata()
589 if (!pmd->nb_tm) { in __format_metadata()
595 __setup_btree_details(pmd); in __format_metadata()
597 r = dm_btree_empty(&pmd->info, &pmd->root); in __format_metadata()
601 r = dm_btree_empty(&pmd->details_info, &pmd->details_root); in __format_metadata()
607 r = __write_initial_superblock(pmd); in __format_metadata()
614 dm_tm_destroy(pmd->nb_tm); in __format_metadata()
616 dm_sm_destroy(pmd->data_sm); in __format_metadata()
618 dm_tm_destroy(pmd->tm); in __format_metadata()
619 dm_sm_destroy(pmd->metadata_sm); in __format_metadata()
625 struct dm_pool_metadata *pmd) in __check_incompat_features() argument
639 if (get_disk_ro(pmd->bdev->bd_disk)) in __check_incompat_features()
652 static int __open_metadata(struct dm_pool_metadata *pmd) in __open_metadata() argument
658 r = dm_bm_read_lock(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __open_metadata()
668 if (le32_to_cpu(disk_super->data_block_size) != pmd->data_block_size) { in __open_metadata()
671 (unsigned long long)pmd->data_block_size); in __open_metadata()
676 r = __check_incompat_features(disk_super, pmd); in __open_metadata()
680 r = dm_tm_open_with_sm(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __open_metadata()
683 &pmd->tm, &pmd->metadata_sm); in __open_metadata()
689 pmd->data_sm = dm_sm_disk_open(pmd->tm, disk_super->data_space_map_root, in __open_metadata()
691 if (IS_ERR(pmd->data_sm)) { in __open_metadata()
693 r = PTR_ERR(pmd->data_sm); in __open_metadata()
697 pmd->nb_tm = dm_tm_create_non_blocking_clone(pmd->tm); in __open_metadata()
698 if (!pmd->nb_tm) { in __open_metadata()
710 pmd->root = le64_to_cpu(disk_super->data_mapping_root); in __open_metadata()
711 pmd->details_root = le64_to_cpu(disk_super->device_details_root); in __open_metadata()
713 __setup_btree_details(pmd); in __open_metadata()
719 dm_sm_destroy(pmd->data_sm); in __open_metadata()
721 dm_tm_destroy(pmd->tm); in __open_metadata()
722 dm_sm_destroy(pmd->metadata_sm); in __open_metadata()
729 static int __open_or_format_metadata(struct dm_pool_metadata *pmd, bool format_device) in __open_or_format_metadata() argument
733 r = __superblock_all_zeroes(pmd->bm, &unformatted); in __open_or_format_metadata()
738 return format_device ? __format_metadata(pmd) : -EPERM; in __open_or_format_metadata()
740 return __open_metadata(pmd); in __open_or_format_metadata()
743 static int __create_persistent_data_objects(struct dm_pool_metadata *pmd, bool format_device) in __create_persistent_data_objects() argument
747 pmd->bm = dm_block_manager_create(pmd->bdev, THIN_METADATA_BLOCK_SIZE << SECTOR_SHIFT, in __create_persistent_data_objects()
749 if (IS_ERR(pmd->bm)) { in __create_persistent_data_objects()
751 r = PTR_ERR(pmd->bm); in __create_persistent_data_objects()
752 pmd->bm = NULL; in __create_persistent_data_objects()
756 r = __open_or_format_metadata(pmd, format_device); in __create_persistent_data_objects()
758 dm_block_manager_destroy(pmd->bm); in __create_persistent_data_objects()
759 pmd->bm = NULL; in __create_persistent_data_objects()
765 static void __destroy_persistent_data_objects(struct dm_pool_metadata *pmd, in __destroy_persistent_data_objects() argument
768 dm_sm_destroy(pmd->data_sm); in __destroy_persistent_data_objects()
769 dm_sm_destroy(pmd->metadata_sm); in __destroy_persistent_data_objects()
770 dm_tm_destroy(pmd->nb_tm); in __destroy_persistent_data_objects()
771 dm_tm_destroy(pmd->tm); in __destroy_persistent_data_objects()
773 dm_block_manager_destroy(pmd->bm); in __destroy_persistent_data_objects()
776 static int __begin_transaction(struct dm_pool_metadata *pmd) in __begin_transaction() argument
786 r = dm_bm_read_lock(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __begin_transaction()
792 pmd->time = le32_to_cpu(disk_super->time); in __begin_transaction()
793 pmd->root = le64_to_cpu(disk_super->data_mapping_root); in __begin_transaction()
794 pmd->details_root = le64_to_cpu(disk_super->device_details_root); in __begin_transaction()
795 pmd->trans_id = le64_to_cpu(disk_super->trans_id); in __begin_transaction()
796 pmd->flags = le32_to_cpu(disk_super->flags); in __begin_transaction()
797 pmd->data_block_size = le32_to_cpu(disk_super->data_block_size); in __begin_transaction()
803 static int __write_changed_details(struct dm_pool_metadata *pmd) in __write_changed_details() argument
810 list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) { in __write_changed_details()
822 r = dm_btree_insert(&pmd->details_info, pmd->details_root, in __write_changed_details()
823 &key, &details, &pmd->details_root); in __write_changed_details()
838 static int __commit_transaction(struct dm_pool_metadata *pmd) in __commit_transaction() argument
848 BUG_ON(!rwsem_is_locked(&pmd->root_lock)); in __commit_transaction()
850 if (unlikely(!pmd->in_service)) in __commit_transaction()
853 if (pmd->pre_commit_fn) { in __commit_transaction()
854 r = pmd->pre_commit_fn(pmd->pre_commit_context); in __commit_transaction()
861 r = __write_changed_details(pmd); in __commit_transaction()
865 r = dm_sm_commit(pmd->data_sm); in __commit_transaction()
869 r = dm_tm_pre_commit(pmd->tm); in __commit_transaction()
873 r = save_sm_roots(pmd); in __commit_transaction()
877 r = superblock_lock(pmd, &sblock); in __commit_transaction()
882 disk_super->time = cpu_to_le32(pmd->time); in __commit_transaction()
883 disk_super->data_mapping_root = cpu_to_le64(pmd->root); in __commit_transaction()
884 disk_super->device_details_root = cpu_to_le64(pmd->details_root); in __commit_transaction()
885 disk_super->trans_id = cpu_to_le64(pmd->trans_id); in __commit_transaction()
886 disk_super->flags = cpu_to_le32(pmd->flags); in __commit_transaction()
888 copy_sm_roots(pmd, disk_super); in __commit_transaction()
890 return dm_tm_commit(pmd->tm, sblock); in __commit_transaction()
893 static void __set_metadata_reserve(struct dm_pool_metadata *pmd) in __set_metadata_reserve() argument
899 r = dm_sm_get_nr_blocks(pmd->metadata_sm, &total); in __set_metadata_reserve()
902 pmd->metadata_reserve = max_blocks; in __set_metadata_reserve()
904 pmd->metadata_reserve = min(max_blocks, div_u64(total, 10)); in __set_metadata_reserve()
912 struct dm_pool_metadata *pmd; in dm_pool_metadata_open() local
914 pmd = kmalloc(sizeof(*pmd), GFP_KERNEL); in dm_pool_metadata_open()
915 if (!pmd) { in dm_pool_metadata_open()
920 init_rwsem(&pmd->root_lock); in dm_pool_metadata_open()
921 pmd->time = 0; in dm_pool_metadata_open()
922 INIT_LIST_HEAD(&pmd->thin_devices); in dm_pool_metadata_open()
923 pmd->fail_io = false; in dm_pool_metadata_open()
924 pmd->in_service = false; in dm_pool_metadata_open()
925 pmd->bdev = bdev; in dm_pool_metadata_open()
926 pmd->data_block_size = data_block_size; in dm_pool_metadata_open()
927 pmd->pre_commit_fn = NULL; in dm_pool_metadata_open()
928 pmd->pre_commit_context = NULL; in dm_pool_metadata_open()
930 r = __create_persistent_data_objects(pmd, format_device); in dm_pool_metadata_open()
932 kfree(pmd); in dm_pool_metadata_open()
936 r = __begin_transaction(pmd); in dm_pool_metadata_open()
938 if (dm_pool_metadata_close(pmd) < 0) in dm_pool_metadata_open()
943 __set_metadata_reserve(pmd); in dm_pool_metadata_open()
945 return pmd; in dm_pool_metadata_open()
948 int dm_pool_metadata_close(struct dm_pool_metadata *pmd) in dm_pool_metadata_close() argument
954 down_read(&pmd->root_lock); in dm_pool_metadata_close()
955 list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) { in dm_pool_metadata_close()
963 up_read(&pmd->root_lock); in dm_pool_metadata_close()
966 DMERR("attempt to close pmd when %u device(s) are still open", in dm_pool_metadata_close()
971 pmd_write_lock_in_core(pmd); in dm_pool_metadata_close()
972 if (!pmd->fail_io && !dm_bm_is_read_only(pmd->bm)) { in dm_pool_metadata_close()
973 r = __commit_transaction(pmd); in dm_pool_metadata_close()
978 pmd_write_unlock(pmd); in dm_pool_metadata_close()
979 if (!pmd->fail_io) in dm_pool_metadata_close()
980 __destroy_persistent_data_objects(pmd, true); in dm_pool_metadata_close()
982 kfree(pmd); in dm_pool_metadata_close()
991 static int __open_device(struct dm_pool_metadata *pmd, in __open_device() argument
1003 list_for_each_entry(td2, &pmd->thin_devices, list) in __open_device()
1019 r = dm_btree_lookup(&pmd->details_info, pmd->details_root, in __open_device()
1030 details_le.transaction_id = cpu_to_le64(pmd->trans_id); in __open_device()
1031 details_le.creation_time = cpu_to_le32(pmd->time); in __open_device()
1032 details_le.snapshotted_time = cpu_to_le32(pmd->time); in __open_device()
1039 (*td)->pmd = pmd; in __open_device()
1049 list_add(&(*td)->list, &pmd->thin_devices); in __open_device()
1059 static int __create_thin(struct dm_pool_metadata *pmd, in __create_thin() argument
1068 r = dm_btree_lookup(&pmd->details_info, pmd->details_root, in __create_thin()
1076 r = dm_btree_empty(&pmd->bl_info, &dev_root); in __create_thin()
1085 r = dm_btree_insert(&pmd->tl_info, pmd->root, &key, &value, &pmd->root); in __create_thin()
1087 dm_btree_del(&pmd->bl_info, dev_root); in __create_thin()
1091 r = __open_device(pmd, dev, 1, &td); in __create_thin()
1093 dm_btree_remove(&pmd->tl_info, pmd->root, &key, &pmd->root); in __create_thin()
1094 dm_btree_del(&pmd->bl_info, dev_root); in __create_thin()
1102 int dm_pool_create_thin(struct dm_pool_metadata *pmd, dm_thin_id dev) in dm_pool_create_thin() argument
1106 pmd_write_lock(pmd); in dm_pool_create_thin()
1107 if (!pmd->fail_io) in dm_pool_create_thin()
1108 r = __create_thin(pmd, dev); in dm_pool_create_thin()
1109 pmd_write_unlock(pmd); in dm_pool_create_thin()
1114 static int __set_snapshot_details(struct dm_pool_metadata *pmd, in __set_snapshot_details() argument
1121 r = __open_device(pmd, origin, 0, &td); in __set_snapshot_details()
1135 static int __create_snap(struct dm_pool_metadata *pmd, in __create_snap() argument
1145 r = dm_btree_lookup(&pmd->details_info, pmd->details_root, in __create_snap()
1151 r = dm_btree_lookup(&pmd->tl_info, pmd->root, &key, &value); in __create_snap()
1157 dm_tm_inc(pmd->tm, origin_root); in __create_snap()
1163 r = dm_btree_insert(&pmd->tl_info, pmd->root, &key, &value, &pmd->root); in __create_snap()
1165 dm_tm_dec(pmd->tm, origin_root); in __create_snap()
1169 pmd->time++; in __create_snap()
1171 r = __open_device(pmd, dev, 1, &td); in __create_snap()
1175 r = __set_snapshot_details(pmd, td, origin, pmd->time); in __create_snap()
1184 dm_btree_remove(&pmd->tl_info, pmd->root, &key, &pmd->root); in __create_snap()
1185 dm_btree_remove(&pmd->details_info, pmd->details_root, in __create_snap()
1186 &key, &pmd->details_root); in __create_snap()
1190 int dm_pool_create_snap(struct dm_pool_metadata *pmd, in dm_pool_create_snap() argument
1196 pmd_write_lock(pmd); in dm_pool_create_snap()
1197 if (!pmd->fail_io) in dm_pool_create_snap()
1198 r = __create_snap(pmd, dev, origin); in dm_pool_create_snap()
1199 pmd_write_unlock(pmd); in dm_pool_create_snap()
1204 static int __delete_device(struct dm_pool_metadata *pmd, dm_thin_id dev) in __delete_device() argument
1211 r = __open_device(pmd, dev, 0, &td); in __delete_device()
1222 r = dm_btree_remove(&pmd->details_info, pmd->details_root, in __delete_device()
1223 &key, &pmd->details_root); in __delete_device()
1227 r = dm_btree_remove(&pmd->tl_info, pmd->root, &key, &pmd->root); in __delete_device()
1234 int dm_pool_delete_thin_device(struct dm_pool_metadata *pmd, in dm_pool_delete_thin_device() argument
1239 pmd_write_lock(pmd); in dm_pool_delete_thin_device()
1240 if (!pmd->fail_io) in dm_pool_delete_thin_device()
1241 r = __delete_device(pmd, dev); in dm_pool_delete_thin_device()
1242 pmd_write_unlock(pmd); in dm_pool_delete_thin_device()
1247 int dm_pool_set_metadata_transaction_id(struct dm_pool_metadata *pmd, in dm_pool_set_metadata_transaction_id() argument
1253 pmd_write_lock(pmd); in dm_pool_set_metadata_transaction_id()
1255 if (pmd->fail_io) in dm_pool_set_metadata_transaction_id()
1258 if (pmd->trans_id != current_id) { in dm_pool_set_metadata_transaction_id()
1263 pmd->trans_id = new_id; in dm_pool_set_metadata_transaction_id()
1267 pmd_write_unlock(pmd); in dm_pool_set_metadata_transaction_id()
1272 int dm_pool_get_metadata_transaction_id(struct dm_pool_metadata *pmd, in dm_pool_get_metadata_transaction_id() argument
1277 down_read(&pmd->root_lock); in dm_pool_get_metadata_transaction_id()
1278 if (!pmd->fail_io) { in dm_pool_get_metadata_transaction_id()
1279 *result = pmd->trans_id; in dm_pool_get_metadata_transaction_id()
1282 up_read(&pmd->root_lock); in dm_pool_get_metadata_transaction_id()
1287 static int __reserve_metadata_snap(struct dm_pool_metadata *pmd) in __reserve_metadata_snap() argument
1298 r = __commit_transaction(pmd); in __reserve_metadata_snap()
1308 dm_sm_inc_block(pmd->metadata_sm, THIN_SUPERBLOCK_LOCATION); in __reserve_metadata_snap()
1309 r = dm_tm_shadow_block(pmd->tm, THIN_SUPERBLOCK_LOCATION, in __reserve_metadata_snap()
1322 dm_tm_dec(pmd->tm, held_root); in __reserve_metadata_snap()
1323 dm_tm_unlock(pmd->tm, copy); in __reserve_metadata_snap()
1338 dm_tm_inc(pmd->tm, le64_to_cpu(disk_super->data_mapping_root)); in __reserve_metadata_snap()
1339 dm_tm_inc(pmd->tm, le64_to_cpu(disk_super->device_details_root)); in __reserve_metadata_snap()
1340 dm_tm_unlock(pmd->tm, copy); in __reserve_metadata_snap()
1345 r = superblock_lock(pmd, &sblock); in __reserve_metadata_snap()
1347 dm_tm_dec(pmd->tm, held_root); in __reserve_metadata_snap()
1357 int dm_pool_reserve_metadata_snap(struct dm_pool_metadata *pmd) in dm_pool_reserve_metadata_snap() argument
1361 pmd_write_lock(pmd); in dm_pool_reserve_metadata_snap()
1362 if (!pmd->fail_io) in dm_pool_reserve_metadata_snap()
1363 r = __reserve_metadata_snap(pmd); in dm_pool_reserve_metadata_snap()
1364 pmd_write_unlock(pmd); in dm_pool_reserve_metadata_snap()
1369 static int __release_metadata_snap(struct dm_pool_metadata *pmd) in __release_metadata_snap() argument
1376 r = superblock_lock(pmd, &sblock); in __release_metadata_snap()
1391 r = dm_tm_read_lock(pmd->tm, held_root, &sb_validator, ©); in __release_metadata_snap()
1396 dm_btree_del(&pmd->info, le64_to_cpu(disk_super->data_mapping_root)); in __release_metadata_snap()
1397 dm_btree_del(&pmd->details_info, le64_to_cpu(disk_super->device_details_root)); in __release_metadata_snap()
1398 dm_sm_dec_block(pmd->metadata_sm, held_root); in __release_metadata_snap()
1400 dm_tm_unlock(pmd->tm, copy); in __release_metadata_snap()
1405 int dm_pool_release_metadata_snap(struct dm_pool_metadata *pmd) in dm_pool_release_metadata_snap() argument
1409 pmd_write_lock(pmd); in dm_pool_release_metadata_snap()
1410 if (!pmd->fail_io) in dm_pool_release_metadata_snap()
1411 r = __release_metadata_snap(pmd); in dm_pool_release_metadata_snap()
1412 pmd_write_unlock(pmd); in dm_pool_release_metadata_snap()
1417 static int __get_metadata_snap(struct dm_pool_metadata *pmd, in __get_metadata_snap() argument
1424 r = dm_bm_read_lock(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __get_metadata_snap()
1437 int dm_pool_get_metadata_snap(struct dm_pool_metadata *pmd, in dm_pool_get_metadata_snap() argument
1442 down_read(&pmd->root_lock); in dm_pool_get_metadata_snap()
1443 if (!pmd->fail_io) in dm_pool_get_metadata_snap()
1444 r = __get_metadata_snap(pmd, result); in dm_pool_get_metadata_snap()
1445 up_read(&pmd->root_lock); in dm_pool_get_metadata_snap()
1450 int dm_pool_open_thin_device(struct dm_pool_metadata *pmd, dm_thin_id dev, in dm_pool_open_thin_device() argument
1455 pmd_write_lock_in_core(pmd); in dm_pool_open_thin_device()
1456 if (!pmd->fail_io) in dm_pool_open_thin_device()
1457 r = __open_device(pmd, dev, 0, td); in dm_pool_open_thin_device()
1458 pmd_write_unlock(pmd); in dm_pool_open_thin_device()
1465 pmd_write_lock_in_core(td->pmd); in dm_pool_close_thin_device()
1467 pmd_write_unlock(td->pmd); in dm_pool_close_thin_device()
1506 struct dm_pool_metadata *pmd = td->pmd; in __find_block() local
1511 info = &pmd->info; in __find_block()
1513 info = &pmd->nb_info; in __find_block()
1515 r = dm_btree_lookup(info, pmd->root, keys, &value); in __find_block()
1526 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_find_block() local
1528 down_read(&pmd->root_lock); in dm_thin_find_block()
1529 if (pmd->fail_io) { in dm_thin_find_block()
1530 up_read(&pmd->root_lock); in dm_thin_find_block()
1536 up_read(&pmd->root_lock); in dm_thin_find_block()
1546 struct dm_pool_metadata *pmd = td->pmd; in __find_next_mapped_block() local
1549 r = dm_btree_lookup_next(&pmd->info, pmd->root, keys, vblock, &value); in __find_next_mapped_block()
1608 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_find_mapped_range() local
1610 down_read(&pmd->root_lock); in dm_thin_find_mapped_range()
1611 if (!pmd->fail_io) { in dm_thin_find_mapped_range()
1615 up_read(&pmd->root_lock); in dm_thin_find_mapped_range()
1625 struct dm_pool_metadata *pmd = td->pmd; in __insert() local
1628 value = cpu_to_le64(pack_block_time(data_block, pmd->time)); in __insert()
1631 r = dm_btree_insert_notify(&pmd->info, pmd->root, keys, &value, in __insert()
1632 &pmd->root, &inserted); in __insert()
1648 pmd_write_lock(td->pmd); in dm_thin_insert_block()
1649 if (!td->pmd->fail_io) in dm_thin_insert_block()
1651 pmd_write_unlock(td->pmd); in dm_thin_insert_block()
1659 struct dm_pool_metadata *pmd = td->pmd; in __remove() local
1662 r = dm_btree_remove(&pmd->info, pmd->root, keys, &pmd->root); in __remove()
1676 struct dm_pool_metadata *pmd = td->pmd; in __remove_range() local
1684 r = dm_btree_lookup(&pmd->tl_info, pmd->root, keys, &value); in __remove_range()
1693 dm_tm_inc(pmd->tm, mapping_root); in __remove_range()
1694 r = dm_btree_remove(&pmd->tl_info, pmd->root, keys, &pmd->root); in __remove_range()
1703 r = dm_btree_lookup_next(&pmd->bl_info, mapping_root, &begin, &begin, &value); in __remove_range()
1713 r = dm_btree_remove_leaves(&pmd->bl_info, mapping_root, &begin, end, &mapping_root, &count); in __remove_range()
1728 return dm_btree_insert(&pmd->tl_info, pmd->root, keys, &value, &pmd->root); in __remove_range()
1735 pmd_write_lock(td->pmd); in dm_thin_remove_block()
1736 if (!td->pmd->fail_io) in dm_thin_remove_block()
1738 pmd_write_unlock(td->pmd); in dm_thin_remove_block()
1748 pmd_write_lock(td->pmd); in dm_thin_remove_range()
1749 if (!td->pmd->fail_io) in dm_thin_remove_range()
1751 pmd_write_unlock(td->pmd); in dm_thin_remove_range()
1756 int dm_pool_block_is_shared(struct dm_pool_metadata *pmd, dm_block_t b, bool *result) in dm_pool_block_is_shared() argument
1761 down_read(&pmd->root_lock); in dm_pool_block_is_shared()
1762 r = dm_sm_get_count(pmd->data_sm, b, &ref_count); in dm_pool_block_is_shared()
1765 up_read(&pmd->root_lock); in dm_pool_block_is_shared()
1770 int dm_pool_inc_data_range(struct dm_pool_metadata *pmd, dm_block_t b, dm_block_t e) in dm_pool_inc_data_range() argument
1774 pmd_write_lock(pmd); in dm_pool_inc_data_range()
1776 r = dm_sm_inc_block(pmd->data_sm, b); in dm_pool_inc_data_range()
1780 pmd_write_unlock(pmd); in dm_pool_inc_data_range()
1785 int dm_pool_dec_data_range(struct dm_pool_metadata *pmd, dm_block_t b, dm_block_t e) in dm_pool_dec_data_range() argument
1789 pmd_write_lock(pmd); in dm_pool_dec_data_range()
1791 r = dm_sm_dec_block(pmd->data_sm, b); in dm_pool_dec_data_range()
1795 pmd_write_unlock(pmd); in dm_pool_dec_data_range()
1804 down_read(&td->pmd->root_lock); in dm_thin_changed_this_transaction()
1806 up_read(&td->pmd->root_lock); in dm_thin_changed_this_transaction()
1811 bool dm_pool_changed_this_transaction(struct dm_pool_metadata *pmd) in dm_pool_changed_this_transaction() argument
1816 down_read(&pmd->root_lock); in dm_pool_changed_this_transaction()
1817 list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) { in dm_pool_changed_this_transaction()
1823 up_read(&pmd->root_lock); in dm_pool_changed_this_transaction()
1832 down_read(&td->pmd->root_lock); in dm_thin_aborted_changes()
1834 up_read(&td->pmd->root_lock); in dm_thin_aborted_changes()
1839 int dm_pool_alloc_data_block(struct dm_pool_metadata *pmd, dm_block_t *result) in dm_pool_alloc_data_block() argument
1843 pmd_write_lock(pmd); in dm_pool_alloc_data_block()
1844 if (!pmd->fail_io) in dm_pool_alloc_data_block()
1845 r = dm_sm_new_block(pmd->data_sm, result); in dm_pool_alloc_data_block()
1846 pmd_write_unlock(pmd); in dm_pool_alloc_data_block()
1851 int dm_pool_commit_metadata(struct dm_pool_metadata *pmd) in dm_pool_commit_metadata() argument
1859 pmd_write_lock_in_core(pmd); in dm_pool_commit_metadata()
1860 if (pmd->fail_io) in dm_pool_commit_metadata()
1863 r = __commit_transaction(pmd); in dm_pool_commit_metadata()
1870 r = __begin_transaction(pmd); in dm_pool_commit_metadata()
1872 pmd_write_unlock(pmd); in dm_pool_commit_metadata()
1876 static void __set_abort_with_changes_flags(struct dm_pool_metadata *pmd) in __set_abort_with_changes_flags() argument
1880 list_for_each_entry(td, &pmd->thin_devices, list) in __set_abort_with_changes_flags()
1884 int dm_pool_abort_metadata(struct dm_pool_metadata *pmd) in dm_pool_abort_metadata() argument
1889 /* fail_io is double-checked with pmd->root_lock held below */ in dm_pool_abort_metadata()
1890 if (unlikely(pmd->fail_io)) in dm_pool_abort_metadata()
1895 * pmd root_lock to avoid ABBA deadlock that would result (due to life-cycle of in dm_pool_abort_metadata()
1896 * shrinker associated with the block manager's bufio client vs pmd root_lock). in dm_pool_abort_metadata()
1897 * - must take shrinker_rwsem without holding pmd->root_lock in dm_pool_abort_metadata()
1899 new_bm = dm_block_manager_create(pmd->bdev, THIN_METADATA_BLOCK_SIZE << SECTOR_SHIFT, in dm_pool_abort_metadata()
1902 pmd_write_lock(pmd); in dm_pool_abort_metadata()
1903 if (pmd->fail_io) { in dm_pool_abort_metadata()
1904 pmd_write_unlock(pmd); in dm_pool_abort_metadata()
1908 __set_abort_with_changes_flags(pmd); in dm_pool_abort_metadata()
1909 __destroy_persistent_data_objects(pmd, false); in dm_pool_abort_metadata()
1910 old_bm = pmd->bm; in dm_pool_abort_metadata()
1913 pmd->bm = NULL; in dm_pool_abort_metadata()
1918 pmd->bm = new_bm; in dm_pool_abort_metadata()
1919 r = __open_or_format_metadata(pmd, false); in dm_pool_abort_metadata()
1921 pmd->bm = NULL; in dm_pool_abort_metadata()
1927 pmd->fail_io = true; in dm_pool_abort_metadata()
1928 pmd_write_unlock(pmd); in dm_pool_abort_metadata()
1937 int dm_pool_get_free_block_count(struct dm_pool_metadata *pmd, dm_block_t *result) in dm_pool_get_free_block_count() argument
1941 down_read(&pmd->root_lock); in dm_pool_get_free_block_count()
1942 if (!pmd->fail_io) in dm_pool_get_free_block_count()
1943 r = dm_sm_get_nr_free(pmd->data_sm, result); in dm_pool_get_free_block_count()
1944 up_read(&pmd->root_lock); in dm_pool_get_free_block_count()
1949 int dm_pool_get_free_metadata_block_count(struct dm_pool_metadata *pmd, in dm_pool_get_free_metadata_block_count() argument
1954 down_read(&pmd->root_lock); in dm_pool_get_free_metadata_block_count()
1955 if (!pmd->fail_io) in dm_pool_get_free_metadata_block_count()
1956 r = dm_sm_get_nr_free(pmd->metadata_sm, result); in dm_pool_get_free_metadata_block_count()
1959 if (*result < pmd->metadata_reserve) in dm_pool_get_free_metadata_block_count()
1962 *result -= pmd->metadata_reserve; in dm_pool_get_free_metadata_block_count()
1964 up_read(&pmd->root_lock); in dm_pool_get_free_metadata_block_count()
1969 int dm_pool_get_metadata_dev_size(struct dm_pool_metadata *pmd, in dm_pool_get_metadata_dev_size() argument
1974 down_read(&pmd->root_lock); in dm_pool_get_metadata_dev_size()
1975 if (!pmd->fail_io) in dm_pool_get_metadata_dev_size()
1976 r = dm_sm_get_nr_blocks(pmd->metadata_sm, result); in dm_pool_get_metadata_dev_size()
1977 up_read(&pmd->root_lock); in dm_pool_get_metadata_dev_size()
1982 int dm_pool_get_data_dev_size(struct dm_pool_metadata *pmd, dm_block_t *result) in dm_pool_get_data_dev_size() argument
1986 down_read(&pmd->root_lock); in dm_pool_get_data_dev_size()
1987 if (!pmd->fail_io) in dm_pool_get_data_dev_size()
1988 r = dm_sm_get_nr_blocks(pmd->data_sm, result); in dm_pool_get_data_dev_size()
1989 up_read(&pmd->root_lock); in dm_pool_get_data_dev_size()
1997 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_get_mapped_count() local
1999 down_read(&pmd->root_lock); in dm_thin_get_mapped_count()
2000 if (!pmd->fail_io) { in dm_thin_get_mapped_count()
2004 up_read(&pmd->root_lock); in dm_thin_get_mapped_count()
2014 struct dm_pool_metadata *pmd = td->pmd; in __highest_block() local
2016 r = dm_btree_lookup(&pmd->tl_info, pmd->root, &td->id, &value_le); in __highest_block()
2022 return dm_btree_find_highest_key(&pmd->bl_info, thin_root, result); in __highest_block()
2029 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_get_highest_mapped_block() local
2031 down_read(&pmd->root_lock); in dm_thin_get_highest_mapped_block()
2032 if (!pmd->fail_io) in dm_thin_get_highest_mapped_block()
2034 up_read(&pmd->root_lock); in dm_thin_get_highest_mapped_block()
2059 int dm_pool_resize_data_dev(struct dm_pool_metadata *pmd, dm_block_t new_count) in dm_pool_resize_data_dev() argument
2063 pmd_write_lock(pmd); in dm_pool_resize_data_dev()
2064 if (!pmd->fail_io) in dm_pool_resize_data_dev()
2065 r = __resize_space_map(pmd->data_sm, new_count); in dm_pool_resize_data_dev()
2066 pmd_write_unlock(pmd); in dm_pool_resize_data_dev()
2071 int dm_pool_resize_metadata_dev(struct dm_pool_metadata *pmd, dm_block_t new_count) in dm_pool_resize_metadata_dev() argument
2075 pmd_write_lock(pmd); in dm_pool_resize_metadata_dev()
2076 if (!pmd->fail_io) { in dm_pool_resize_metadata_dev()
2077 r = __resize_space_map(pmd->metadata_sm, new_count); in dm_pool_resize_metadata_dev()
2079 __set_metadata_reserve(pmd); in dm_pool_resize_metadata_dev()
2081 pmd_write_unlock(pmd); in dm_pool_resize_metadata_dev()
2086 void dm_pool_metadata_read_only(struct dm_pool_metadata *pmd) in dm_pool_metadata_read_only() argument
2088 pmd_write_lock_in_core(pmd); in dm_pool_metadata_read_only()
2089 dm_bm_set_read_only(pmd->bm); in dm_pool_metadata_read_only()
2090 pmd_write_unlock(pmd); in dm_pool_metadata_read_only()
2093 void dm_pool_metadata_read_write(struct dm_pool_metadata *pmd) in dm_pool_metadata_read_write() argument
2095 pmd_write_lock_in_core(pmd); in dm_pool_metadata_read_write()
2096 dm_bm_set_read_write(pmd->bm); in dm_pool_metadata_read_write()
2097 pmd_write_unlock(pmd); in dm_pool_metadata_read_write()
2100 int dm_pool_register_metadata_threshold(struct dm_pool_metadata *pmd, in dm_pool_register_metadata_threshold() argument
2107 pmd_write_lock_in_core(pmd); in dm_pool_register_metadata_threshold()
2108 if (!pmd->fail_io) { in dm_pool_register_metadata_threshold()
2109 r = dm_sm_register_threshold_callback(pmd->metadata_sm, in dm_pool_register_metadata_threshold()
2112 pmd_write_unlock(pmd); in dm_pool_register_metadata_threshold()
2117 void dm_pool_register_pre_commit_callback(struct dm_pool_metadata *pmd, in dm_pool_register_pre_commit_callback() argument
2121 pmd_write_lock_in_core(pmd); in dm_pool_register_pre_commit_callback()
2122 pmd->pre_commit_fn = fn; in dm_pool_register_pre_commit_callback()
2123 pmd->pre_commit_context = context; in dm_pool_register_pre_commit_callback()
2124 pmd_write_unlock(pmd); in dm_pool_register_pre_commit_callback()
2127 int dm_pool_metadata_set_needs_check(struct dm_pool_metadata *pmd) in dm_pool_metadata_set_needs_check() argument
2133 pmd_write_lock(pmd); in dm_pool_metadata_set_needs_check()
2134 if (pmd->fail_io) in dm_pool_metadata_set_needs_check()
2137 pmd->flags |= THIN_METADATA_NEEDS_CHECK_FLAG; in dm_pool_metadata_set_needs_check()
2139 r = superblock_lock(pmd, &sblock); in dm_pool_metadata_set_needs_check()
2146 disk_super->flags = cpu_to_le32(pmd->flags); in dm_pool_metadata_set_needs_check()
2150 pmd_write_unlock(pmd); in dm_pool_metadata_set_needs_check()
2154 bool dm_pool_metadata_needs_check(struct dm_pool_metadata *pmd) in dm_pool_metadata_needs_check() argument
2158 down_read(&pmd->root_lock); in dm_pool_metadata_needs_check()
2159 needs_check = pmd->flags & THIN_METADATA_NEEDS_CHECK_FLAG; in dm_pool_metadata_needs_check()
2160 up_read(&pmd->root_lock); in dm_pool_metadata_needs_check()
2165 void dm_pool_issue_prefetches(struct dm_pool_metadata *pmd) in dm_pool_issue_prefetches() argument
2167 down_read(&pmd->root_lock); in dm_pool_issue_prefetches()
2168 if (!pmd->fail_io) in dm_pool_issue_prefetches()
2169 dm_tm_issue_prefetches(pmd->tm); in dm_pool_issue_prefetches()
2170 up_read(&pmd->root_lock); in dm_pool_issue_prefetches()