Lines Matching refs:pmd
233 struct dm_pool_metadata *pmd; member
419 static inline void pmd_write_lock_in_core(struct dm_pool_metadata *pmd) in pmd_write_lock_in_core() argument
420 __acquires(pmd->root_lock) in pmd_write_lock_in_core()
422 down_write(&pmd->root_lock); in pmd_write_lock_in_core()
425 static inline void pmd_write_lock(struct dm_pool_metadata *pmd) in pmd_write_lock() argument
427 pmd_write_lock_in_core(pmd); in pmd_write_lock()
428 if (unlikely(!pmd->in_service)) in pmd_write_lock()
429 pmd->in_service = true; in pmd_write_lock()
432 static inline void pmd_write_unlock(struct dm_pool_metadata *pmd) in pmd_write_unlock() argument
433 __releases(pmd->root_lock) in pmd_write_unlock()
435 up_write(&pmd->root_lock); in pmd_write_unlock()
440 static int superblock_lock_zero(struct dm_pool_metadata *pmd, in superblock_lock_zero() argument
443 return dm_bm_write_lock_zero(pmd->bm, THIN_SUPERBLOCK_LOCATION, in superblock_lock_zero()
447 static int superblock_lock(struct dm_pool_metadata *pmd, in superblock_lock() argument
450 return dm_bm_write_lock(pmd->bm, THIN_SUPERBLOCK_LOCATION, in superblock_lock()
483 static void __setup_btree_details(struct dm_pool_metadata *pmd) in __setup_btree_details() argument
485 pmd->info.tm = pmd->tm; in __setup_btree_details()
486 pmd->info.levels = 2; in __setup_btree_details()
487 pmd->info.value_type.context = pmd->data_sm; in __setup_btree_details()
488 pmd->info.value_type.size = sizeof(__le64); in __setup_btree_details()
489 pmd->info.value_type.inc = data_block_inc; in __setup_btree_details()
490 pmd->info.value_type.dec = data_block_dec; in __setup_btree_details()
491 pmd->info.value_type.equal = data_block_equal; in __setup_btree_details()
493 memcpy(&pmd->nb_info, &pmd->info, sizeof(pmd->nb_info)); in __setup_btree_details()
494 pmd->nb_info.tm = pmd->nb_tm; in __setup_btree_details()
496 pmd->tl_info.tm = pmd->tm; in __setup_btree_details()
497 pmd->tl_info.levels = 1; in __setup_btree_details()
498 pmd->tl_info.value_type.context = &pmd->bl_info; in __setup_btree_details()
499 pmd->tl_info.value_type.size = sizeof(__le64); in __setup_btree_details()
500 pmd->tl_info.value_type.inc = subtree_inc; in __setup_btree_details()
501 pmd->tl_info.value_type.dec = subtree_dec; in __setup_btree_details()
502 pmd->tl_info.value_type.equal = subtree_equal; in __setup_btree_details()
504 pmd->bl_info.tm = pmd->tm; in __setup_btree_details()
505 pmd->bl_info.levels = 1; in __setup_btree_details()
506 pmd->bl_info.value_type.context = pmd->data_sm; in __setup_btree_details()
507 pmd->bl_info.value_type.size = sizeof(__le64); in __setup_btree_details()
508 pmd->bl_info.value_type.inc = data_block_inc; in __setup_btree_details()
509 pmd->bl_info.value_type.dec = data_block_dec; in __setup_btree_details()
510 pmd->bl_info.value_type.equal = data_block_equal; in __setup_btree_details()
512 pmd->details_info.tm = pmd->tm; in __setup_btree_details()
513 pmd->details_info.levels = 1; in __setup_btree_details()
514 pmd->details_info.value_type.context = NULL; in __setup_btree_details()
515 pmd->details_info.value_type.size = sizeof(struct disk_device_details); in __setup_btree_details()
516 pmd->details_info.value_type.inc = NULL; in __setup_btree_details()
517 pmd->details_info.value_type.dec = NULL; in __setup_btree_details()
518 pmd->details_info.value_type.equal = NULL; in __setup_btree_details()
521 static int save_sm_roots(struct dm_pool_metadata *pmd) in save_sm_roots() argument
526 r = dm_sm_root_size(pmd->metadata_sm, &len); in save_sm_roots()
530 r = dm_sm_copy_root(pmd->metadata_sm, &pmd->metadata_space_map_root, len); in save_sm_roots()
534 r = dm_sm_root_size(pmd->data_sm, &len); in save_sm_roots()
538 return dm_sm_copy_root(pmd->data_sm, &pmd->data_space_map_root, len); in save_sm_roots()
541 static void copy_sm_roots(struct dm_pool_metadata *pmd, in copy_sm_roots() argument
545 &pmd->metadata_space_map_root, in copy_sm_roots()
546 sizeof(pmd->metadata_space_map_root)); in copy_sm_roots()
549 &pmd->data_space_map_root, in copy_sm_roots()
550 sizeof(pmd->data_space_map_root)); in copy_sm_roots()
553 static int __write_initial_superblock(struct dm_pool_metadata *pmd) in __write_initial_superblock() argument
558 sector_t bdev_size = bdev_nr_sectors(pmd->bdev); in __write_initial_superblock()
563 r = dm_sm_commit(pmd->data_sm); in __write_initial_superblock()
567 r = dm_tm_pre_commit(pmd->tm); in __write_initial_superblock()
571 r = save_sm_roots(pmd); in __write_initial_superblock()
575 r = superblock_lock_zero(pmd, &sblock); in __write_initial_superblock()
588 copy_sm_roots(pmd, disk_super); in __write_initial_superblock()
590 disk_super->data_mapping_root = cpu_to_le64(pmd->root); in __write_initial_superblock()
591 disk_super->device_details_root = cpu_to_le64(pmd->details_root); in __write_initial_superblock()
594 disk_super->data_block_size = cpu_to_le32(pmd->data_block_size); in __write_initial_superblock()
596 return dm_tm_commit(pmd->tm, sblock); in __write_initial_superblock()
599 static int __format_metadata(struct dm_pool_metadata *pmd) in __format_metadata() argument
603 r = dm_tm_create_with_sm(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __format_metadata()
604 &pmd->tm, &pmd->metadata_sm); in __format_metadata()
606 pmd->tm = NULL; in __format_metadata()
607 pmd->metadata_sm = NULL; in __format_metadata()
612 pmd->data_sm = dm_sm_disk_create(pmd->tm, 0); in __format_metadata()
613 if (IS_ERR(pmd->data_sm)) { in __format_metadata()
615 r = PTR_ERR(pmd->data_sm); in __format_metadata()
616 pmd->data_sm = NULL; in __format_metadata()
620 pmd->nb_tm = dm_tm_create_non_blocking_clone(pmd->tm); in __format_metadata()
621 if (!pmd->nb_tm) { in __format_metadata()
627 __setup_btree_details(pmd); in __format_metadata()
629 r = dm_btree_empty(&pmd->info, &pmd->root); in __format_metadata()
633 r = dm_btree_empty(&pmd->details_info, &pmd->details_root); in __format_metadata()
639 r = __write_initial_superblock(pmd); in __format_metadata()
646 dm_tm_destroy(pmd->nb_tm); in __format_metadata()
647 pmd->nb_tm = NULL; in __format_metadata()
649 dm_sm_destroy(pmd->data_sm); in __format_metadata()
650 pmd->data_sm = NULL; in __format_metadata()
652 dm_tm_destroy(pmd->tm); in __format_metadata()
653 pmd->tm = NULL; in __format_metadata()
654 dm_sm_destroy(pmd->metadata_sm); in __format_metadata()
655 pmd->metadata_sm = NULL; in __format_metadata()
661 struct dm_pool_metadata *pmd) in __check_incompat_features() argument
675 if (bdev_read_only(pmd->bdev)) in __check_incompat_features()
688 static int __open_metadata(struct dm_pool_metadata *pmd) in __open_metadata() argument
694 r = dm_bm_read_lock(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __open_metadata()
704 if (le32_to_cpu(disk_super->data_block_size) != pmd->data_block_size) { in __open_metadata()
707 (unsigned long long)pmd->data_block_size); in __open_metadata()
712 r = __check_incompat_features(disk_super, pmd); in __open_metadata()
716 r = dm_tm_open_with_sm(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __open_metadata()
719 &pmd->tm, &pmd->metadata_sm); in __open_metadata()
721 pmd->tm = NULL; in __open_metadata()
722 pmd->metadata_sm = NULL; in __open_metadata()
727 pmd->data_sm = dm_sm_disk_open(pmd->tm, disk_super->data_space_map_root, in __open_metadata()
729 if (IS_ERR(pmd->data_sm)) { in __open_metadata()
731 r = PTR_ERR(pmd->data_sm); in __open_metadata()
732 pmd->data_sm = NULL; in __open_metadata()
736 pmd->nb_tm = dm_tm_create_non_blocking_clone(pmd->tm); in __open_metadata()
737 if (!pmd->nb_tm) { in __open_metadata()
749 pmd->root = le64_to_cpu(disk_super->data_mapping_root); in __open_metadata()
750 pmd->details_root = le64_to_cpu(disk_super->device_details_root); in __open_metadata()
752 __setup_btree_details(pmd); in __open_metadata()
758 dm_sm_destroy(pmd->data_sm); in __open_metadata()
759 pmd->data_sm = NULL; in __open_metadata()
761 dm_tm_destroy(pmd->tm); in __open_metadata()
762 pmd->tm = NULL; in __open_metadata()
763 dm_sm_destroy(pmd->metadata_sm); in __open_metadata()
764 pmd->metadata_sm = NULL; in __open_metadata()
771 static int __open_or_format_metadata(struct dm_pool_metadata *pmd, bool format_device) in __open_or_format_metadata() argument
775 r = __superblock_all_zeroes(pmd->bm, &unformatted); in __open_or_format_metadata()
780 return format_device ? __format_metadata(pmd) : -EPERM; in __open_or_format_metadata()
782 return __open_metadata(pmd); in __open_or_format_metadata()
785 static int __create_persistent_data_objects(struct dm_pool_metadata *pmd, bool format_device) in __create_persistent_data_objects() argument
789 pmd->bm = dm_block_manager_create(pmd->bdev, THIN_METADATA_BLOCK_SIZE << SECTOR_SHIFT, in __create_persistent_data_objects()
791 if (IS_ERR(pmd->bm)) { in __create_persistent_data_objects()
793 r = PTR_ERR(pmd->bm); in __create_persistent_data_objects()
794 pmd->bm = NULL; in __create_persistent_data_objects()
798 r = __open_or_format_metadata(pmd, format_device); in __create_persistent_data_objects()
800 dm_block_manager_destroy(pmd->bm); in __create_persistent_data_objects()
801 pmd->bm = NULL; in __create_persistent_data_objects()
807 static void __destroy_persistent_data_objects(struct dm_pool_metadata *pmd, in __destroy_persistent_data_objects() argument
810 dm_sm_destroy(pmd->data_sm); in __destroy_persistent_data_objects()
811 pmd->data_sm = NULL; in __destroy_persistent_data_objects()
812 dm_sm_destroy(pmd->metadata_sm); in __destroy_persistent_data_objects()
813 pmd->metadata_sm = NULL; in __destroy_persistent_data_objects()
814 dm_tm_destroy(pmd->nb_tm); in __destroy_persistent_data_objects()
815 pmd->nb_tm = NULL; in __destroy_persistent_data_objects()
816 dm_tm_destroy(pmd->tm); in __destroy_persistent_data_objects()
817 pmd->tm = NULL; in __destroy_persistent_data_objects()
819 dm_block_manager_destroy(pmd->bm); in __destroy_persistent_data_objects()
822 static int __begin_transaction(struct dm_pool_metadata *pmd) in __begin_transaction() argument
832 r = dm_bm_read_lock(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __begin_transaction()
838 pmd->time = le32_to_cpu(disk_super->time); in __begin_transaction()
839 pmd->root = le64_to_cpu(disk_super->data_mapping_root); in __begin_transaction()
840 pmd->details_root = le64_to_cpu(disk_super->device_details_root); in __begin_transaction()
841 pmd->trans_id = le64_to_cpu(disk_super->trans_id); in __begin_transaction()
842 pmd->flags = le32_to_cpu(disk_super->flags); in __begin_transaction()
843 pmd->data_block_size = le32_to_cpu(disk_super->data_block_size); in __begin_transaction()
849 static int __write_changed_details(struct dm_pool_metadata *pmd) in __write_changed_details() argument
856 list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) { in __write_changed_details()
868 r = dm_btree_insert(&pmd->details_info, pmd->details_root, in __write_changed_details()
869 &key, &details, &pmd->details_root); in __write_changed_details()
884 static int __commit_transaction(struct dm_pool_metadata *pmd) in __commit_transaction() argument
894 BUG_ON(!rwsem_is_locked(&pmd->root_lock)); in __commit_transaction()
896 if (unlikely(!pmd->in_service)) in __commit_transaction()
899 if (pmd->pre_commit_fn) { in __commit_transaction()
900 r = pmd->pre_commit_fn(pmd->pre_commit_context); in __commit_transaction()
907 r = __write_changed_details(pmd); in __commit_transaction()
911 r = dm_sm_commit(pmd->data_sm); in __commit_transaction()
915 r = dm_tm_pre_commit(pmd->tm); in __commit_transaction()
919 r = save_sm_roots(pmd); in __commit_transaction()
923 r = superblock_lock(pmd, &sblock); in __commit_transaction()
928 disk_super->time = cpu_to_le32(pmd->time); in __commit_transaction()
929 disk_super->data_mapping_root = cpu_to_le64(pmd->root); in __commit_transaction()
930 disk_super->device_details_root = cpu_to_le64(pmd->details_root); in __commit_transaction()
931 disk_super->trans_id = cpu_to_le64(pmd->trans_id); in __commit_transaction()
932 disk_super->flags = cpu_to_le32(pmd->flags); in __commit_transaction()
934 copy_sm_roots(pmd, disk_super); in __commit_transaction()
936 return dm_tm_commit(pmd->tm, sblock); in __commit_transaction()
939 static void __set_metadata_reserve(struct dm_pool_metadata *pmd) in __set_metadata_reserve() argument
945 r = dm_sm_get_nr_blocks(pmd->metadata_sm, &total); in __set_metadata_reserve()
948 pmd->metadata_reserve = max_blocks; in __set_metadata_reserve()
950 pmd->metadata_reserve = min(max_blocks, div_u64(total, 10)); in __set_metadata_reserve()
958 struct dm_pool_metadata *pmd; in dm_pool_metadata_open() local
960 pmd = kmalloc(sizeof(*pmd), GFP_KERNEL); in dm_pool_metadata_open()
961 if (!pmd) { in dm_pool_metadata_open()
966 init_rwsem(&pmd->root_lock); in dm_pool_metadata_open()
967 pmd->time = 0; in dm_pool_metadata_open()
968 INIT_LIST_HEAD(&pmd->thin_devices); in dm_pool_metadata_open()
969 pmd->fail_io = false; in dm_pool_metadata_open()
970 pmd->in_service = false; in dm_pool_metadata_open()
971 pmd->bdev = bdev; in dm_pool_metadata_open()
972 pmd->data_block_size = data_block_size; in dm_pool_metadata_open()
973 pmd->pre_commit_fn = NULL; in dm_pool_metadata_open()
974 pmd->pre_commit_context = NULL; in dm_pool_metadata_open()
976 r = __create_persistent_data_objects(pmd, format_device); in dm_pool_metadata_open()
978 kfree(pmd); in dm_pool_metadata_open()
982 r = __begin_transaction(pmd); in dm_pool_metadata_open()
984 if (dm_pool_metadata_close(pmd) < 0) in dm_pool_metadata_open()
989 __set_metadata_reserve(pmd); in dm_pool_metadata_open()
991 return pmd; in dm_pool_metadata_open()
994 int dm_pool_metadata_close(struct dm_pool_metadata *pmd) in dm_pool_metadata_close() argument
1000 down_read(&pmd->root_lock); in dm_pool_metadata_close()
1001 list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) { in dm_pool_metadata_close()
1009 up_read(&pmd->root_lock); in dm_pool_metadata_close()
1017 pmd_write_lock_in_core(pmd); in dm_pool_metadata_close()
1018 if (!pmd->fail_io && !dm_bm_is_read_only(pmd->bm)) { in dm_pool_metadata_close()
1019 r = __commit_transaction(pmd); in dm_pool_metadata_close()
1024 pmd_write_unlock(pmd); in dm_pool_metadata_close()
1025 __destroy_persistent_data_objects(pmd, true); in dm_pool_metadata_close()
1027 kfree(pmd); in dm_pool_metadata_close()
1036 static int __open_device(struct dm_pool_metadata *pmd, in __open_device() argument
1048 list_for_each_entry(td2, &pmd->thin_devices, list) in __open_device()
1064 r = dm_btree_lookup(&pmd->details_info, pmd->details_root, in __open_device()
1075 details_le.transaction_id = cpu_to_le64(pmd->trans_id); in __open_device()
1076 details_le.creation_time = cpu_to_le32(pmd->time); in __open_device()
1077 details_le.snapshotted_time = cpu_to_le32(pmd->time); in __open_device()
1084 (*td)->pmd = pmd; in __open_device()
1094 list_add(&(*td)->list, &pmd->thin_devices); in __open_device()
1104 static int __create_thin(struct dm_pool_metadata *pmd, in __create_thin() argument
1113 r = dm_btree_lookup(&pmd->details_info, pmd->details_root, in __create_thin()
1121 r = dm_btree_empty(&pmd->bl_info, &dev_root); in __create_thin()
1130 r = dm_btree_insert(&pmd->tl_info, pmd->root, &key, &value, &pmd->root); in __create_thin()
1132 dm_btree_del(&pmd->bl_info, dev_root); in __create_thin()
1136 r = __open_device(pmd, dev, 1, &td); in __create_thin()
1138 dm_btree_remove(&pmd->tl_info, pmd->root, &key, &pmd->root); in __create_thin()
1139 dm_btree_del(&pmd->bl_info, dev_root); in __create_thin()
1147 int dm_pool_create_thin(struct dm_pool_metadata *pmd, dm_thin_id dev) in dm_pool_create_thin() argument
1151 pmd_write_lock(pmd); in dm_pool_create_thin()
1152 if (!pmd->fail_io) in dm_pool_create_thin()
1153 r = __create_thin(pmd, dev); in dm_pool_create_thin()
1154 pmd_write_unlock(pmd); in dm_pool_create_thin()
1159 static int __set_snapshot_details(struct dm_pool_metadata *pmd, in __set_snapshot_details() argument
1166 r = __open_device(pmd, origin, 0, &td); in __set_snapshot_details()
1180 static int __create_snap(struct dm_pool_metadata *pmd, in __create_snap() argument
1190 r = dm_btree_lookup(&pmd->details_info, pmd->details_root, in __create_snap()
1196 r = dm_btree_lookup(&pmd->tl_info, pmd->root, &key, &value); in __create_snap()
1202 dm_tm_inc(pmd->tm, origin_root); in __create_snap()
1208 r = dm_btree_insert(&pmd->tl_info, pmd->root, &key, &value, &pmd->root); in __create_snap()
1210 dm_tm_dec(pmd->tm, origin_root); in __create_snap()
1214 pmd->time++; in __create_snap()
1216 r = __open_device(pmd, dev, 1, &td); in __create_snap()
1220 r = __set_snapshot_details(pmd, td, origin, pmd->time); in __create_snap()
1229 dm_btree_remove(&pmd->tl_info, pmd->root, &key, &pmd->root); in __create_snap()
1230 dm_btree_remove(&pmd->details_info, pmd->details_root, in __create_snap()
1231 &key, &pmd->details_root); in __create_snap()
1235 int dm_pool_create_snap(struct dm_pool_metadata *pmd, in dm_pool_create_snap() argument
1241 pmd_write_lock(pmd); in dm_pool_create_snap()
1242 if (!pmd->fail_io) in dm_pool_create_snap()
1243 r = __create_snap(pmd, dev, origin); in dm_pool_create_snap()
1244 pmd_write_unlock(pmd); in dm_pool_create_snap()
1249 static int __delete_device(struct dm_pool_metadata *pmd, dm_thin_id dev) in __delete_device() argument
1256 r = __open_device(pmd, dev, 0, &td); in __delete_device()
1267 r = dm_btree_remove(&pmd->details_info, pmd->details_root, in __delete_device()
1268 &key, &pmd->details_root); in __delete_device()
1272 r = dm_btree_remove(&pmd->tl_info, pmd->root, &key, &pmd->root); in __delete_device()
1279 int dm_pool_delete_thin_device(struct dm_pool_metadata *pmd, in dm_pool_delete_thin_device() argument
1284 pmd_write_lock(pmd); in dm_pool_delete_thin_device()
1285 if (!pmd->fail_io) in dm_pool_delete_thin_device()
1286 r = __delete_device(pmd, dev); in dm_pool_delete_thin_device()
1287 pmd_write_unlock(pmd); in dm_pool_delete_thin_device()
1292 int dm_pool_set_metadata_transaction_id(struct dm_pool_metadata *pmd, in dm_pool_set_metadata_transaction_id() argument
1298 pmd_write_lock(pmd); in dm_pool_set_metadata_transaction_id()
1300 if (pmd->fail_io) in dm_pool_set_metadata_transaction_id()
1303 if (pmd->trans_id != current_id) { in dm_pool_set_metadata_transaction_id()
1308 pmd->trans_id = new_id; in dm_pool_set_metadata_transaction_id()
1312 pmd_write_unlock(pmd); in dm_pool_set_metadata_transaction_id()
1317 int dm_pool_get_metadata_transaction_id(struct dm_pool_metadata *pmd, in dm_pool_get_metadata_transaction_id() argument
1322 down_read(&pmd->root_lock); in dm_pool_get_metadata_transaction_id()
1323 if (!pmd->fail_io) { in dm_pool_get_metadata_transaction_id()
1324 *result = pmd->trans_id; in dm_pool_get_metadata_transaction_id()
1327 up_read(&pmd->root_lock); in dm_pool_get_metadata_transaction_id()
1332 static int __reserve_metadata_snap(struct dm_pool_metadata *pmd) in __reserve_metadata_snap() argument
1343 r = __commit_transaction(pmd); in __reserve_metadata_snap()
1353 dm_sm_inc_block(pmd->metadata_sm, THIN_SUPERBLOCK_LOCATION); in __reserve_metadata_snap()
1354 r = dm_tm_shadow_block(pmd->tm, THIN_SUPERBLOCK_LOCATION, in __reserve_metadata_snap()
1367 dm_tm_dec(pmd->tm, held_root); in __reserve_metadata_snap()
1368 dm_tm_unlock(pmd->tm, copy); in __reserve_metadata_snap()
1383 dm_tm_inc(pmd->tm, le64_to_cpu(disk_super->data_mapping_root)); in __reserve_metadata_snap()
1384 dm_tm_inc(pmd->tm, le64_to_cpu(disk_super->device_details_root)); in __reserve_metadata_snap()
1385 dm_tm_unlock(pmd->tm, copy); in __reserve_metadata_snap()
1390 r = superblock_lock(pmd, &sblock); in __reserve_metadata_snap()
1392 dm_tm_dec(pmd->tm, held_root); in __reserve_metadata_snap()
1402 int dm_pool_reserve_metadata_snap(struct dm_pool_metadata *pmd) in dm_pool_reserve_metadata_snap() argument
1406 pmd_write_lock(pmd); in dm_pool_reserve_metadata_snap()
1407 if (!pmd->fail_io) in dm_pool_reserve_metadata_snap()
1408 r = __reserve_metadata_snap(pmd); in dm_pool_reserve_metadata_snap()
1409 pmd_write_unlock(pmd); in dm_pool_reserve_metadata_snap()
1414 static int __release_metadata_snap(struct dm_pool_metadata *pmd) in __release_metadata_snap() argument
1421 r = superblock_lock(pmd, &sblock); in __release_metadata_snap()
1436 r = dm_tm_read_lock(pmd->tm, held_root, &sb_validator, ©); in __release_metadata_snap()
1441 dm_btree_del(&pmd->info, le64_to_cpu(disk_super->data_mapping_root)); in __release_metadata_snap()
1442 dm_btree_del(&pmd->details_info, le64_to_cpu(disk_super->device_details_root)); in __release_metadata_snap()
1443 dm_sm_dec_block(pmd->metadata_sm, held_root); in __release_metadata_snap()
1445 dm_tm_unlock(pmd->tm, copy); in __release_metadata_snap()
1450 int dm_pool_release_metadata_snap(struct dm_pool_metadata *pmd) in dm_pool_release_metadata_snap() argument
1454 pmd_write_lock(pmd); in dm_pool_release_metadata_snap()
1455 if (!pmd->fail_io) in dm_pool_release_metadata_snap()
1456 r = __release_metadata_snap(pmd); in dm_pool_release_metadata_snap()
1457 pmd_write_unlock(pmd); in dm_pool_release_metadata_snap()
1462 static int __get_metadata_snap(struct dm_pool_metadata *pmd, in __get_metadata_snap() argument
1469 r = dm_bm_read_lock(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __get_metadata_snap()
1482 int dm_pool_get_metadata_snap(struct dm_pool_metadata *pmd, in dm_pool_get_metadata_snap() argument
1487 down_read(&pmd->root_lock); in dm_pool_get_metadata_snap()
1488 if (!pmd->fail_io) in dm_pool_get_metadata_snap()
1489 r = __get_metadata_snap(pmd, result); in dm_pool_get_metadata_snap()
1490 up_read(&pmd->root_lock); in dm_pool_get_metadata_snap()
1495 int dm_pool_open_thin_device(struct dm_pool_metadata *pmd, dm_thin_id dev, in dm_pool_open_thin_device() argument
1500 pmd_write_lock_in_core(pmd); in dm_pool_open_thin_device()
1501 if (!pmd->fail_io) in dm_pool_open_thin_device()
1502 r = __open_device(pmd, dev, 0, td); in dm_pool_open_thin_device()
1503 pmd_write_unlock(pmd); in dm_pool_open_thin_device()
1510 pmd_write_lock_in_core(td->pmd); in dm_pool_close_thin_device()
1512 pmd_write_unlock(td->pmd); in dm_pool_close_thin_device()
1551 struct dm_pool_metadata *pmd = td->pmd; in __find_block() local
1556 info = &pmd->info; in __find_block()
1558 info = &pmd->nb_info; in __find_block()
1560 r = dm_btree_lookup(info, pmd->root, keys, &value); in __find_block()
1571 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_find_block() local
1573 down_read(&pmd->root_lock); in dm_thin_find_block()
1574 if (pmd->fail_io) { in dm_thin_find_block()
1575 up_read(&pmd->root_lock); in dm_thin_find_block()
1581 up_read(&pmd->root_lock); in dm_thin_find_block()
1591 struct dm_pool_metadata *pmd = td->pmd; in __find_next_mapped_block() local
1594 r = dm_btree_lookup_next(&pmd->info, pmd->root, keys, vblock, &value); in __find_next_mapped_block()
1653 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_find_mapped_range() local
1655 down_read(&pmd->root_lock); in dm_thin_find_mapped_range()
1656 if (!pmd->fail_io) { in dm_thin_find_mapped_range()
1660 up_read(&pmd->root_lock); in dm_thin_find_mapped_range()
1670 struct dm_pool_metadata *pmd = td->pmd; in __insert() local
1673 value = cpu_to_le64(pack_block_time(data_block, pmd->time)); in __insert()
1676 r = dm_btree_insert_notify(&pmd->info, pmd->root, keys, &value, in __insert()
1677 &pmd->root, &inserted); in __insert()
1693 pmd_write_lock(td->pmd); in dm_thin_insert_block()
1694 if (!td->pmd->fail_io) in dm_thin_insert_block()
1696 pmd_write_unlock(td->pmd); in dm_thin_insert_block()
1705 struct dm_pool_metadata *pmd = td->pmd; in __remove_range() local
1713 r = dm_btree_lookup(&pmd->tl_info, pmd->root, keys, &value); in __remove_range()
1722 dm_tm_inc(pmd->tm, mapping_root); in __remove_range()
1723 r = dm_btree_remove(&pmd->tl_info, pmd->root, keys, &pmd->root); in __remove_range()
1732 r = dm_btree_lookup_next(&pmd->bl_info, mapping_root, &begin, &begin, &value); in __remove_range()
1742 r = dm_btree_remove_leaves(&pmd->bl_info, mapping_root, &begin, end, &mapping_root, &count); in __remove_range()
1757 return dm_btree_insert(&pmd->tl_info, pmd->root, keys, &value, &pmd->root); in __remove_range()
1765 pmd_write_lock(td->pmd); in dm_thin_remove_range()
1766 if (!td->pmd->fail_io) in dm_thin_remove_range()
1768 pmd_write_unlock(td->pmd); in dm_thin_remove_range()
1773 int dm_pool_block_is_shared(struct dm_pool_metadata *pmd, dm_block_t b, bool *result) in dm_pool_block_is_shared() argument
1778 down_read(&pmd->root_lock); in dm_pool_block_is_shared()
1779 if (!pmd->fail_io) { in dm_pool_block_is_shared()
1780 r = dm_sm_get_count(pmd->data_sm, b, &ref_count); in dm_pool_block_is_shared()
1784 up_read(&pmd->root_lock); in dm_pool_block_is_shared()
1789 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
1793 pmd_write_lock(pmd); in dm_pool_inc_data_range()
1794 if (!pmd->fail_io) in dm_pool_inc_data_range()
1795 r = dm_sm_inc_blocks(pmd->data_sm, b, e); in dm_pool_inc_data_range()
1796 pmd_write_unlock(pmd); in dm_pool_inc_data_range()
1801 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
1805 pmd_write_lock(pmd); in dm_pool_dec_data_range()
1806 if (!pmd->fail_io) in dm_pool_dec_data_range()
1807 r = dm_sm_dec_blocks(pmd->data_sm, b, e); in dm_pool_dec_data_range()
1808 pmd_write_unlock(pmd); in dm_pool_dec_data_range()
1817 down_read(&td->pmd->root_lock); in dm_thin_changed_this_transaction()
1819 up_read(&td->pmd->root_lock); in dm_thin_changed_this_transaction()
1824 bool dm_pool_changed_this_transaction(struct dm_pool_metadata *pmd) in dm_pool_changed_this_transaction() argument
1829 down_read(&pmd->root_lock); in dm_pool_changed_this_transaction()
1830 list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) { in dm_pool_changed_this_transaction()
1836 up_read(&pmd->root_lock); in dm_pool_changed_this_transaction()
1845 down_read(&td->pmd->root_lock); in dm_thin_aborted_changes()
1847 up_read(&td->pmd->root_lock); in dm_thin_aborted_changes()
1852 int dm_pool_alloc_data_block(struct dm_pool_metadata *pmd, dm_block_t *result) in dm_pool_alloc_data_block() argument
1856 pmd_write_lock(pmd); in dm_pool_alloc_data_block()
1857 if (!pmd->fail_io) in dm_pool_alloc_data_block()
1858 r = dm_sm_new_block(pmd->data_sm, result); in dm_pool_alloc_data_block()
1859 pmd_write_unlock(pmd); in dm_pool_alloc_data_block()
1864 int dm_pool_commit_metadata(struct dm_pool_metadata *pmd) in dm_pool_commit_metadata() argument
1872 pmd_write_lock_in_core(pmd); in dm_pool_commit_metadata()
1873 if (pmd->fail_io) in dm_pool_commit_metadata()
1876 r = __commit_transaction(pmd); in dm_pool_commit_metadata()
1883 r = __begin_transaction(pmd); in dm_pool_commit_metadata()
1885 pmd_write_unlock(pmd); in dm_pool_commit_metadata()
1889 static void __set_abort_with_changes_flags(struct dm_pool_metadata *pmd) in __set_abort_with_changes_flags() argument
1893 list_for_each_entry(td, &pmd->thin_devices, list) in __set_abort_with_changes_flags()
1897 int dm_pool_abort_metadata(struct dm_pool_metadata *pmd) in dm_pool_abort_metadata() argument
1902 if (unlikely(pmd->fail_io)) in dm_pool_abort_metadata()
1905 pmd_write_lock(pmd); in dm_pool_abort_metadata()
1906 if (pmd->fail_io) { in dm_pool_abort_metadata()
1907 pmd_write_unlock(pmd); in dm_pool_abort_metadata()
1910 __set_abort_with_changes_flags(pmd); in dm_pool_abort_metadata()
1913 __destroy_persistent_data_objects(pmd, false); in dm_pool_abort_metadata()
1916 dm_block_manager_reset(pmd->bm); in dm_pool_abort_metadata()
1919 r = __open_or_format_metadata(pmd, false); in dm_pool_abort_metadata()
1921 pmd->fail_io = true; in dm_pool_abort_metadata()
1922 pmd_write_unlock(pmd); in dm_pool_abort_metadata()
1926 int dm_pool_get_free_block_count(struct dm_pool_metadata *pmd, dm_block_t *result) in dm_pool_get_free_block_count() argument
1930 down_read(&pmd->root_lock); in dm_pool_get_free_block_count()
1931 if (!pmd->fail_io) in dm_pool_get_free_block_count()
1932 r = dm_sm_get_nr_free(pmd->data_sm, result); in dm_pool_get_free_block_count()
1933 up_read(&pmd->root_lock); in dm_pool_get_free_block_count()
1938 int dm_pool_get_free_metadata_block_count(struct dm_pool_metadata *pmd, in dm_pool_get_free_metadata_block_count() argument
1943 down_read(&pmd->root_lock); in dm_pool_get_free_metadata_block_count()
1944 if (!pmd->fail_io) in dm_pool_get_free_metadata_block_count()
1945 r = dm_sm_get_nr_free(pmd->metadata_sm, result); in dm_pool_get_free_metadata_block_count()
1948 if (*result < pmd->metadata_reserve) in dm_pool_get_free_metadata_block_count()
1951 *result -= pmd->metadata_reserve; in dm_pool_get_free_metadata_block_count()
1953 up_read(&pmd->root_lock); in dm_pool_get_free_metadata_block_count()
1958 int dm_pool_get_metadata_dev_size(struct dm_pool_metadata *pmd, in dm_pool_get_metadata_dev_size() argument
1963 down_read(&pmd->root_lock); in dm_pool_get_metadata_dev_size()
1964 if (!pmd->fail_io) in dm_pool_get_metadata_dev_size()
1965 r = dm_sm_get_nr_blocks(pmd->metadata_sm, result); in dm_pool_get_metadata_dev_size()
1966 up_read(&pmd->root_lock); in dm_pool_get_metadata_dev_size()
1971 int dm_pool_get_data_dev_size(struct dm_pool_metadata *pmd, dm_block_t *result) in dm_pool_get_data_dev_size() argument
1975 down_read(&pmd->root_lock); in dm_pool_get_data_dev_size()
1976 if (!pmd->fail_io) in dm_pool_get_data_dev_size()
1977 r = dm_sm_get_nr_blocks(pmd->data_sm, result); in dm_pool_get_data_dev_size()
1978 up_read(&pmd->root_lock); in dm_pool_get_data_dev_size()
1986 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_get_mapped_count() local
1988 down_read(&pmd->root_lock); in dm_thin_get_mapped_count()
1989 if (!pmd->fail_io) { in dm_thin_get_mapped_count()
1993 up_read(&pmd->root_lock); in dm_thin_get_mapped_count()
2003 struct dm_pool_metadata *pmd = td->pmd; in __highest_block() local
2005 r = dm_btree_lookup(&pmd->tl_info, pmd->root, &td->id, &value_le); in __highest_block()
2011 return dm_btree_find_highest_key(&pmd->bl_info, thin_root, result); in __highest_block()
2018 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_get_highest_mapped_block() local
2020 down_read(&pmd->root_lock); in dm_thin_get_highest_mapped_block()
2021 if (!pmd->fail_io) in dm_thin_get_highest_mapped_block()
2023 up_read(&pmd->root_lock); in dm_thin_get_highest_mapped_block()
2048 int dm_pool_resize_data_dev(struct dm_pool_metadata *pmd, dm_block_t new_count) in dm_pool_resize_data_dev() argument
2052 pmd_write_lock(pmd); in dm_pool_resize_data_dev()
2053 if (!pmd->fail_io) in dm_pool_resize_data_dev()
2054 r = __resize_space_map(pmd->data_sm, new_count); in dm_pool_resize_data_dev()
2055 pmd_write_unlock(pmd); in dm_pool_resize_data_dev()
2060 int dm_pool_resize_metadata_dev(struct dm_pool_metadata *pmd, dm_block_t new_count) in dm_pool_resize_metadata_dev() argument
2064 pmd_write_lock(pmd); in dm_pool_resize_metadata_dev()
2065 if (!pmd->fail_io) { in dm_pool_resize_metadata_dev()
2066 r = __resize_space_map(pmd->metadata_sm, new_count); in dm_pool_resize_metadata_dev()
2068 __set_metadata_reserve(pmd); in dm_pool_resize_metadata_dev()
2070 pmd_write_unlock(pmd); in dm_pool_resize_metadata_dev()
2075 void dm_pool_metadata_read_only(struct dm_pool_metadata *pmd) in dm_pool_metadata_read_only() argument
2077 pmd_write_lock_in_core(pmd); in dm_pool_metadata_read_only()
2078 dm_bm_set_read_only(pmd->bm); in dm_pool_metadata_read_only()
2079 pmd_write_unlock(pmd); in dm_pool_metadata_read_only()
2082 void dm_pool_metadata_read_write(struct dm_pool_metadata *pmd) in dm_pool_metadata_read_write() argument
2084 pmd_write_lock_in_core(pmd); in dm_pool_metadata_read_write()
2085 dm_bm_set_read_write(pmd->bm); in dm_pool_metadata_read_write()
2086 pmd_write_unlock(pmd); in dm_pool_metadata_read_write()
2089 int dm_pool_register_metadata_threshold(struct dm_pool_metadata *pmd, in dm_pool_register_metadata_threshold() argument
2096 pmd_write_lock_in_core(pmd); in dm_pool_register_metadata_threshold()
2097 if (!pmd->fail_io) { in dm_pool_register_metadata_threshold()
2098 r = dm_sm_register_threshold_callback(pmd->metadata_sm, in dm_pool_register_metadata_threshold()
2101 pmd_write_unlock(pmd); in dm_pool_register_metadata_threshold()
2106 void dm_pool_register_pre_commit_callback(struct dm_pool_metadata *pmd, in dm_pool_register_pre_commit_callback() argument
2110 pmd_write_lock_in_core(pmd); in dm_pool_register_pre_commit_callback()
2111 pmd->pre_commit_fn = fn; in dm_pool_register_pre_commit_callback()
2112 pmd->pre_commit_context = context; in dm_pool_register_pre_commit_callback()
2113 pmd_write_unlock(pmd); in dm_pool_register_pre_commit_callback()
2116 int dm_pool_metadata_set_needs_check(struct dm_pool_metadata *pmd) in dm_pool_metadata_set_needs_check() argument
2122 pmd_write_lock(pmd); in dm_pool_metadata_set_needs_check()
2123 if (pmd->fail_io) in dm_pool_metadata_set_needs_check()
2126 pmd->flags |= THIN_METADATA_NEEDS_CHECK_FLAG; in dm_pool_metadata_set_needs_check()
2128 r = superblock_lock(pmd, &sblock); in dm_pool_metadata_set_needs_check()
2135 disk_super->flags = cpu_to_le32(pmd->flags); in dm_pool_metadata_set_needs_check()
2139 pmd_write_unlock(pmd); in dm_pool_metadata_set_needs_check()
2143 bool dm_pool_metadata_needs_check(struct dm_pool_metadata *pmd) in dm_pool_metadata_needs_check() argument
2147 down_read(&pmd->root_lock); in dm_pool_metadata_needs_check()
2148 needs_check = pmd->flags & THIN_METADATA_NEEDS_CHECK_FLAG; in dm_pool_metadata_needs_check()
2149 up_read(&pmd->root_lock); in dm_pool_metadata_needs_check()
2154 void dm_pool_issue_prefetches(struct dm_pool_metadata *pmd) in dm_pool_issue_prefetches() argument
2156 down_read(&pmd->root_lock); in dm_pool_issue_prefetches()
2157 if (!pmd->fail_io) in dm_pool_issue_prefetches()
2158 dm_tm_issue_prefetches(pmd->tm); in dm_pool_issue_prefetches()
2159 up_read(&pmd->root_lock); in dm_pool_issue_prefetches()