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()
704 __setup_btree_details(pmd); in __open_metadata()
710 dm_sm_destroy(pmd->data_sm); in __open_metadata()
712 dm_tm_destroy(pmd->tm); in __open_metadata()
713 dm_sm_destroy(pmd->metadata_sm); in __open_metadata()
720 static int __open_or_format_metadata(struct dm_pool_metadata *pmd, bool format_device) in __open_or_format_metadata() argument
724 r = __superblock_all_zeroes(pmd->bm, &unformatted); in __open_or_format_metadata()
729 return format_device ? __format_metadata(pmd) : -EPERM; in __open_or_format_metadata()
731 return __open_metadata(pmd); in __open_or_format_metadata()
734 static int __create_persistent_data_objects(struct dm_pool_metadata *pmd, bool format_device) in __create_persistent_data_objects() argument
738 pmd->bm = dm_block_manager_create(pmd->bdev, THIN_METADATA_BLOCK_SIZE << SECTOR_SHIFT, in __create_persistent_data_objects()
740 if (IS_ERR(pmd->bm)) { in __create_persistent_data_objects()
742 r = PTR_ERR(pmd->bm); in __create_persistent_data_objects()
743 pmd->bm = NULL; in __create_persistent_data_objects()
747 r = __open_or_format_metadata(pmd, format_device); in __create_persistent_data_objects()
749 dm_block_manager_destroy(pmd->bm); in __create_persistent_data_objects()
750 pmd->bm = NULL; in __create_persistent_data_objects()
756 static void __destroy_persistent_data_objects(struct dm_pool_metadata *pmd) in __destroy_persistent_data_objects() argument
758 dm_sm_destroy(pmd->data_sm); in __destroy_persistent_data_objects()
759 dm_sm_destroy(pmd->metadata_sm); in __destroy_persistent_data_objects()
760 dm_tm_destroy(pmd->nb_tm); in __destroy_persistent_data_objects()
761 dm_tm_destroy(pmd->tm); in __destroy_persistent_data_objects()
762 dm_block_manager_destroy(pmd->bm); in __destroy_persistent_data_objects()
765 static int __begin_transaction(struct dm_pool_metadata *pmd) in __begin_transaction() argument
775 r = dm_bm_read_lock(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __begin_transaction()
781 pmd->time = le32_to_cpu(disk_super->time); in __begin_transaction()
782 pmd->root = le64_to_cpu(disk_super->data_mapping_root); in __begin_transaction()
783 pmd->details_root = le64_to_cpu(disk_super->device_details_root); in __begin_transaction()
784 pmd->trans_id = le64_to_cpu(disk_super->trans_id); in __begin_transaction()
785 pmd->flags = le32_to_cpu(disk_super->flags); in __begin_transaction()
786 pmd->data_block_size = le32_to_cpu(disk_super->data_block_size); in __begin_transaction()
792 static int __write_changed_details(struct dm_pool_metadata *pmd) in __write_changed_details() argument
799 list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) { in __write_changed_details()
811 r = dm_btree_insert(&pmd->details_info, pmd->details_root, in __write_changed_details()
812 &key, &details, &pmd->details_root); in __write_changed_details()
827 static int __commit_transaction(struct dm_pool_metadata *pmd) in __commit_transaction() argument
837 BUG_ON(!rwsem_is_locked(&pmd->root_lock)); in __commit_transaction()
839 if (unlikely(!pmd->in_service)) in __commit_transaction()
842 if (pmd->pre_commit_fn) { in __commit_transaction()
843 r = pmd->pre_commit_fn(pmd->pre_commit_context); in __commit_transaction()
850 r = __write_changed_details(pmd); in __commit_transaction()
854 r = dm_sm_commit(pmd->data_sm); in __commit_transaction()
858 r = dm_tm_pre_commit(pmd->tm); in __commit_transaction()
862 r = save_sm_roots(pmd); in __commit_transaction()
866 r = superblock_lock(pmd, &sblock); in __commit_transaction()
871 disk_super->time = cpu_to_le32(pmd->time); in __commit_transaction()
872 disk_super->data_mapping_root = cpu_to_le64(pmd->root); in __commit_transaction()
873 disk_super->device_details_root = cpu_to_le64(pmd->details_root); in __commit_transaction()
874 disk_super->trans_id = cpu_to_le64(pmd->trans_id); in __commit_transaction()
875 disk_super->flags = cpu_to_le32(pmd->flags); in __commit_transaction()
877 copy_sm_roots(pmd, disk_super); in __commit_transaction()
879 return dm_tm_commit(pmd->tm, sblock); in __commit_transaction()
882 static void __set_metadata_reserve(struct dm_pool_metadata *pmd) in __set_metadata_reserve() argument
888 r = dm_sm_get_nr_blocks(pmd->metadata_sm, &total); in __set_metadata_reserve()
891 pmd->metadata_reserve = max_blocks; in __set_metadata_reserve()
893 pmd->metadata_reserve = min(max_blocks, div_u64(total, 10)); in __set_metadata_reserve()
901 struct dm_pool_metadata *pmd; in dm_pool_metadata_open() local
903 pmd = kmalloc(sizeof(*pmd), GFP_KERNEL); in dm_pool_metadata_open()
904 if (!pmd) { in dm_pool_metadata_open()
909 init_rwsem(&pmd->root_lock); in dm_pool_metadata_open()
910 pmd->time = 0; in dm_pool_metadata_open()
911 INIT_LIST_HEAD(&pmd->thin_devices); in dm_pool_metadata_open()
912 pmd->fail_io = false; in dm_pool_metadata_open()
913 pmd->in_service = false; in dm_pool_metadata_open()
914 pmd->bdev = bdev; in dm_pool_metadata_open()
915 pmd->data_block_size = data_block_size; in dm_pool_metadata_open()
916 pmd->pre_commit_fn = NULL; in dm_pool_metadata_open()
917 pmd->pre_commit_context = NULL; in dm_pool_metadata_open()
919 r = __create_persistent_data_objects(pmd, format_device); in dm_pool_metadata_open()
921 kfree(pmd); in dm_pool_metadata_open()
925 r = __begin_transaction(pmd); in dm_pool_metadata_open()
927 if (dm_pool_metadata_close(pmd) < 0) in dm_pool_metadata_open()
932 __set_metadata_reserve(pmd); in dm_pool_metadata_open()
934 return pmd; in dm_pool_metadata_open()
937 int dm_pool_metadata_close(struct dm_pool_metadata *pmd) in dm_pool_metadata_close() argument
943 down_read(&pmd->root_lock); in dm_pool_metadata_close()
944 list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) { in dm_pool_metadata_close()
952 up_read(&pmd->root_lock); in dm_pool_metadata_close()
955 DMERR("attempt to close pmd when %u device(s) are still open", in dm_pool_metadata_close()
960 pmd_write_lock_in_core(pmd); in dm_pool_metadata_close()
961 if (!pmd->fail_io && !dm_bm_is_read_only(pmd->bm)) { in dm_pool_metadata_close()
962 r = __commit_transaction(pmd); in dm_pool_metadata_close()
967 pmd_write_unlock(pmd); in dm_pool_metadata_close()
968 if (!pmd->fail_io) in dm_pool_metadata_close()
969 __destroy_persistent_data_objects(pmd); in dm_pool_metadata_close()
971 kfree(pmd); in dm_pool_metadata_close()
980 static int __open_device(struct dm_pool_metadata *pmd, in __open_device() argument
992 list_for_each_entry(td2, &pmd->thin_devices, list) in __open_device()
1008 r = dm_btree_lookup(&pmd->details_info, pmd->details_root, in __open_device()
1019 details_le.transaction_id = cpu_to_le64(pmd->trans_id); in __open_device()
1020 details_le.creation_time = cpu_to_le32(pmd->time); in __open_device()
1021 details_le.snapshotted_time = cpu_to_le32(pmd->time); in __open_device()
1028 (*td)->pmd = pmd; in __open_device()
1038 list_add(&(*td)->list, &pmd->thin_devices); in __open_device()
1048 static int __create_thin(struct dm_pool_metadata *pmd, in __create_thin() argument
1057 r = dm_btree_lookup(&pmd->details_info, pmd->details_root, in __create_thin()
1065 r = dm_btree_empty(&pmd->bl_info, &dev_root); in __create_thin()
1074 r = dm_btree_insert(&pmd->tl_info, pmd->root, &key, &value, &pmd->root); in __create_thin()
1076 dm_btree_del(&pmd->bl_info, dev_root); in __create_thin()
1080 r = __open_device(pmd, dev, 1, &td); in __create_thin()
1082 dm_btree_remove(&pmd->tl_info, pmd->root, &key, &pmd->root); in __create_thin()
1083 dm_btree_del(&pmd->bl_info, dev_root); in __create_thin()
1091 int dm_pool_create_thin(struct dm_pool_metadata *pmd, dm_thin_id dev) in dm_pool_create_thin() argument
1095 pmd_write_lock(pmd); in dm_pool_create_thin()
1096 if (!pmd->fail_io) in dm_pool_create_thin()
1097 r = __create_thin(pmd, dev); in dm_pool_create_thin()
1098 pmd_write_unlock(pmd); in dm_pool_create_thin()
1103 static int __set_snapshot_details(struct dm_pool_metadata *pmd, in __set_snapshot_details() argument
1110 r = __open_device(pmd, origin, 0, &td); in __set_snapshot_details()
1124 static int __create_snap(struct dm_pool_metadata *pmd, in __create_snap() argument
1134 r = dm_btree_lookup(&pmd->details_info, pmd->details_root, in __create_snap()
1140 r = dm_btree_lookup(&pmd->tl_info, pmd->root, &key, &value); in __create_snap()
1146 dm_tm_inc(pmd->tm, origin_root); in __create_snap()
1152 r = dm_btree_insert(&pmd->tl_info, pmd->root, &key, &value, &pmd->root); in __create_snap()
1154 dm_tm_dec(pmd->tm, origin_root); in __create_snap()
1158 pmd->time++; in __create_snap()
1160 r = __open_device(pmd, dev, 1, &td); in __create_snap()
1164 r = __set_snapshot_details(pmd, td, origin, pmd->time); in __create_snap()
1173 dm_btree_remove(&pmd->tl_info, pmd->root, &key, &pmd->root); in __create_snap()
1174 dm_btree_remove(&pmd->details_info, pmd->details_root, in __create_snap()
1175 &key, &pmd->details_root); in __create_snap()
1179 int dm_pool_create_snap(struct dm_pool_metadata *pmd, in dm_pool_create_snap() argument
1185 pmd_write_lock(pmd); in dm_pool_create_snap()
1186 if (!pmd->fail_io) in dm_pool_create_snap()
1187 r = __create_snap(pmd, dev, origin); in dm_pool_create_snap()
1188 pmd_write_unlock(pmd); in dm_pool_create_snap()
1193 static int __delete_device(struct dm_pool_metadata *pmd, dm_thin_id dev) in __delete_device() argument
1200 r = __open_device(pmd, dev, 0, &td); in __delete_device()
1211 r = dm_btree_remove(&pmd->details_info, pmd->details_root, in __delete_device()
1212 &key, &pmd->details_root); in __delete_device()
1216 r = dm_btree_remove(&pmd->tl_info, pmd->root, &key, &pmd->root); in __delete_device()
1223 int dm_pool_delete_thin_device(struct dm_pool_metadata *pmd, in dm_pool_delete_thin_device() argument
1228 pmd_write_lock(pmd); in dm_pool_delete_thin_device()
1229 if (!pmd->fail_io) in dm_pool_delete_thin_device()
1230 r = __delete_device(pmd, dev); in dm_pool_delete_thin_device()
1231 pmd_write_unlock(pmd); in dm_pool_delete_thin_device()
1236 int dm_pool_set_metadata_transaction_id(struct dm_pool_metadata *pmd, in dm_pool_set_metadata_transaction_id() argument
1242 pmd_write_lock(pmd); in dm_pool_set_metadata_transaction_id()
1244 if (pmd->fail_io) in dm_pool_set_metadata_transaction_id()
1247 if (pmd->trans_id != current_id) { in dm_pool_set_metadata_transaction_id()
1252 pmd->trans_id = new_id; in dm_pool_set_metadata_transaction_id()
1256 pmd_write_unlock(pmd); in dm_pool_set_metadata_transaction_id()
1261 int dm_pool_get_metadata_transaction_id(struct dm_pool_metadata *pmd, in dm_pool_get_metadata_transaction_id() argument
1266 down_read(&pmd->root_lock); in dm_pool_get_metadata_transaction_id()
1267 if (!pmd->fail_io) { in dm_pool_get_metadata_transaction_id()
1268 *result = pmd->trans_id; in dm_pool_get_metadata_transaction_id()
1271 up_read(&pmd->root_lock); in dm_pool_get_metadata_transaction_id()
1276 static int __reserve_metadata_snap(struct dm_pool_metadata *pmd) in __reserve_metadata_snap() argument
1287 r = __commit_transaction(pmd); in __reserve_metadata_snap()
1297 dm_sm_inc_block(pmd->metadata_sm, THIN_SUPERBLOCK_LOCATION); in __reserve_metadata_snap()
1298 r = dm_tm_shadow_block(pmd->tm, THIN_SUPERBLOCK_LOCATION, in __reserve_metadata_snap()
1311 dm_tm_dec(pmd->tm, held_root); in __reserve_metadata_snap()
1312 dm_tm_unlock(pmd->tm, copy); in __reserve_metadata_snap()
1327 dm_tm_inc(pmd->tm, le64_to_cpu(disk_super->data_mapping_root)); in __reserve_metadata_snap()
1328 dm_tm_inc(pmd->tm, le64_to_cpu(disk_super->device_details_root)); in __reserve_metadata_snap()
1329 dm_tm_unlock(pmd->tm, copy); in __reserve_metadata_snap()
1334 r = superblock_lock(pmd, &sblock); in __reserve_metadata_snap()
1336 dm_tm_dec(pmd->tm, held_root); in __reserve_metadata_snap()
1346 int dm_pool_reserve_metadata_snap(struct dm_pool_metadata *pmd) in dm_pool_reserve_metadata_snap() argument
1350 pmd_write_lock(pmd); in dm_pool_reserve_metadata_snap()
1351 if (!pmd->fail_io) in dm_pool_reserve_metadata_snap()
1352 r = __reserve_metadata_snap(pmd); in dm_pool_reserve_metadata_snap()
1353 pmd_write_unlock(pmd); in dm_pool_reserve_metadata_snap()
1358 static int __release_metadata_snap(struct dm_pool_metadata *pmd) in __release_metadata_snap() argument
1365 r = superblock_lock(pmd, &sblock); in __release_metadata_snap()
1380 r = dm_tm_read_lock(pmd->tm, held_root, &sb_validator, ©); in __release_metadata_snap()
1385 dm_btree_del(&pmd->info, le64_to_cpu(disk_super->data_mapping_root)); in __release_metadata_snap()
1386 dm_btree_del(&pmd->details_info, le64_to_cpu(disk_super->device_details_root)); in __release_metadata_snap()
1387 dm_sm_dec_block(pmd->metadata_sm, held_root); in __release_metadata_snap()
1389 dm_tm_unlock(pmd->tm, copy); in __release_metadata_snap()
1394 int dm_pool_release_metadata_snap(struct dm_pool_metadata *pmd) in dm_pool_release_metadata_snap() argument
1398 pmd_write_lock(pmd); in dm_pool_release_metadata_snap()
1399 if (!pmd->fail_io) in dm_pool_release_metadata_snap()
1400 r = __release_metadata_snap(pmd); in dm_pool_release_metadata_snap()
1401 pmd_write_unlock(pmd); in dm_pool_release_metadata_snap()
1406 static int __get_metadata_snap(struct dm_pool_metadata *pmd, in __get_metadata_snap() argument
1413 r = dm_bm_read_lock(pmd->bm, THIN_SUPERBLOCK_LOCATION, in __get_metadata_snap()
1426 int dm_pool_get_metadata_snap(struct dm_pool_metadata *pmd, in dm_pool_get_metadata_snap() argument
1431 down_read(&pmd->root_lock); in dm_pool_get_metadata_snap()
1432 if (!pmd->fail_io) in dm_pool_get_metadata_snap()
1433 r = __get_metadata_snap(pmd, result); in dm_pool_get_metadata_snap()
1434 up_read(&pmd->root_lock); in dm_pool_get_metadata_snap()
1439 int dm_pool_open_thin_device(struct dm_pool_metadata *pmd, dm_thin_id dev, in dm_pool_open_thin_device() argument
1444 pmd_write_lock_in_core(pmd); in dm_pool_open_thin_device()
1445 if (!pmd->fail_io) in dm_pool_open_thin_device()
1446 r = __open_device(pmd, dev, 0, td); in dm_pool_open_thin_device()
1447 pmd_write_unlock(pmd); in dm_pool_open_thin_device()
1454 pmd_write_lock_in_core(td->pmd); in dm_pool_close_thin_device()
1456 pmd_write_unlock(td->pmd); in dm_pool_close_thin_device()
1495 struct dm_pool_metadata *pmd = td->pmd; in __find_block() local
1500 info = &pmd->info; in __find_block()
1502 info = &pmd->nb_info; in __find_block()
1504 r = dm_btree_lookup(info, pmd->root, keys, &value); in __find_block()
1515 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_find_block() local
1517 down_read(&pmd->root_lock); in dm_thin_find_block()
1518 if (pmd->fail_io) { in dm_thin_find_block()
1519 up_read(&pmd->root_lock); in dm_thin_find_block()
1525 up_read(&pmd->root_lock); in dm_thin_find_block()
1535 struct dm_pool_metadata *pmd = td->pmd; in __find_next_mapped_block() local
1538 r = dm_btree_lookup_next(&pmd->info, pmd->root, keys, vblock, &value); in __find_next_mapped_block()
1597 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_find_mapped_range() local
1599 down_read(&pmd->root_lock); in dm_thin_find_mapped_range()
1600 if (!pmd->fail_io) { in dm_thin_find_mapped_range()
1604 up_read(&pmd->root_lock); in dm_thin_find_mapped_range()
1614 struct dm_pool_metadata *pmd = td->pmd; in __insert() local
1617 value = cpu_to_le64(pack_block_time(data_block, pmd->time)); in __insert()
1620 r = dm_btree_insert_notify(&pmd->info, pmd->root, keys, &value, in __insert()
1621 &pmd->root, &inserted); in __insert()
1637 pmd_write_lock(td->pmd); in dm_thin_insert_block()
1638 if (!td->pmd->fail_io) in dm_thin_insert_block()
1640 pmd_write_unlock(td->pmd); in dm_thin_insert_block()
1648 struct dm_pool_metadata *pmd = td->pmd; in __remove() local
1651 r = dm_btree_remove(&pmd->info, pmd->root, keys, &pmd->root); in __remove()
1665 struct dm_pool_metadata *pmd = td->pmd; in __remove_range() local
1673 r = dm_btree_lookup(&pmd->tl_info, pmd->root, keys, &value); in __remove_range()
1682 dm_tm_inc(pmd->tm, mapping_root); in __remove_range()
1683 r = dm_btree_remove(&pmd->tl_info, pmd->root, keys, &pmd->root); in __remove_range()
1692 r = dm_btree_lookup_next(&pmd->bl_info, mapping_root, &begin, &begin, &value); in __remove_range()
1702 r = dm_btree_remove_leaves(&pmd->bl_info, mapping_root, &begin, end, &mapping_root, &count); in __remove_range()
1717 return dm_btree_insert(&pmd->tl_info, pmd->root, keys, &value, &pmd->root); in __remove_range()
1724 pmd_write_lock(td->pmd); in dm_thin_remove_block()
1725 if (!td->pmd->fail_io) in dm_thin_remove_block()
1727 pmd_write_unlock(td->pmd); in dm_thin_remove_block()
1737 pmd_write_lock(td->pmd); in dm_thin_remove_range()
1738 if (!td->pmd->fail_io) in dm_thin_remove_range()
1740 pmd_write_unlock(td->pmd); in dm_thin_remove_range()
1745 int dm_pool_block_is_shared(struct dm_pool_metadata *pmd, dm_block_t b, bool *result) in dm_pool_block_is_shared() argument
1750 down_read(&pmd->root_lock); in dm_pool_block_is_shared()
1751 r = dm_sm_get_count(pmd->data_sm, b, &ref_count); in dm_pool_block_is_shared()
1754 up_read(&pmd->root_lock); in dm_pool_block_is_shared()
1759 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
1763 pmd_write_lock(pmd); in dm_pool_inc_data_range()
1765 r = dm_sm_inc_block(pmd->data_sm, b); in dm_pool_inc_data_range()
1769 pmd_write_unlock(pmd); in dm_pool_inc_data_range()
1774 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
1778 pmd_write_lock(pmd); in dm_pool_dec_data_range()
1780 r = dm_sm_dec_block(pmd->data_sm, b); in dm_pool_dec_data_range()
1784 pmd_write_unlock(pmd); in dm_pool_dec_data_range()
1793 down_read(&td->pmd->root_lock); in dm_thin_changed_this_transaction()
1795 up_read(&td->pmd->root_lock); in dm_thin_changed_this_transaction()
1800 bool dm_pool_changed_this_transaction(struct dm_pool_metadata *pmd) in dm_pool_changed_this_transaction() argument
1805 down_read(&pmd->root_lock); in dm_pool_changed_this_transaction()
1806 list_for_each_entry_safe(td, tmp, &pmd->thin_devices, list) { in dm_pool_changed_this_transaction()
1812 up_read(&pmd->root_lock); in dm_pool_changed_this_transaction()
1821 down_read(&td->pmd->root_lock); in dm_thin_aborted_changes()
1823 up_read(&td->pmd->root_lock); in dm_thin_aborted_changes()
1828 int dm_pool_alloc_data_block(struct dm_pool_metadata *pmd, dm_block_t *result) in dm_pool_alloc_data_block() argument
1832 pmd_write_lock(pmd); in dm_pool_alloc_data_block()
1833 if (!pmd->fail_io) in dm_pool_alloc_data_block()
1834 r = dm_sm_new_block(pmd->data_sm, result); in dm_pool_alloc_data_block()
1835 pmd_write_unlock(pmd); in dm_pool_alloc_data_block()
1840 int dm_pool_commit_metadata(struct dm_pool_metadata *pmd) in dm_pool_commit_metadata() argument
1848 pmd_write_lock_in_core(pmd); in dm_pool_commit_metadata()
1849 if (pmd->fail_io) in dm_pool_commit_metadata()
1852 r = __commit_transaction(pmd); in dm_pool_commit_metadata()
1859 r = __begin_transaction(pmd); in dm_pool_commit_metadata()
1861 pmd_write_unlock(pmd); in dm_pool_commit_metadata()
1865 static void __set_abort_with_changes_flags(struct dm_pool_metadata *pmd) in __set_abort_with_changes_flags() argument
1869 list_for_each_entry(td, &pmd->thin_devices, list) in __set_abort_with_changes_flags()
1873 int dm_pool_abort_metadata(struct dm_pool_metadata *pmd) in dm_pool_abort_metadata() argument
1877 pmd_write_lock(pmd); in dm_pool_abort_metadata()
1878 if (pmd->fail_io) in dm_pool_abort_metadata()
1881 __set_abort_with_changes_flags(pmd); in dm_pool_abort_metadata()
1882 __destroy_persistent_data_objects(pmd); in dm_pool_abort_metadata()
1883 r = __create_persistent_data_objects(pmd, false); in dm_pool_abort_metadata()
1885 pmd->fail_io = true; in dm_pool_abort_metadata()
1888 pmd_write_unlock(pmd); in dm_pool_abort_metadata()
1893 int dm_pool_get_free_block_count(struct dm_pool_metadata *pmd, dm_block_t *result) in dm_pool_get_free_block_count() argument
1897 down_read(&pmd->root_lock); in dm_pool_get_free_block_count()
1898 if (!pmd->fail_io) in dm_pool_get_free_block_count()
1899 r = dm_sm_get_nr_free(pmd->data_sm, result); in dm_pool_get_free_block_count()
1900 up_read(&pmd->root_lock); in dm_pool_get_free_block_count()
1905 int dm_pool_get_free_metadata_block_count(struct dm_pool_metadata *pmd, in dm_pool_get_free_metadata_block_count() argument
1910 down_read(&pmd->root_lock); in dm_pool_get_free_metadata_block_count()
1911 if (!pmd->fail_io) in dm_pool_get_free_metadata_block_count()
1912 r = dm_sm_get_nr_free(pmd->metadata_sm, result); in dm_pool_get_free_metadata_block_count()
1915 if (*result < pmd->metadata_reserve) in dm_pool_get_free_metadata_block_count()
1918 *result -= pmd->metadata_reserve; in dm_pool_get_free_metadata_block_count()
1920 up_read(&pmd->root_lock); in dm_pool_get_free_metadata_block_count()
1925 int dm_pool_get_metadata_dev_size(struct dm_pool_metadata *pmd, in dm_pool_get_metadata_dev_size() argument
1930 down_read(&pmd->root_lock); in dm_pool_get_metadata_dev_size()
1931 if (!pmd->fail_io) in dm_pool_get_metadata_dev_size()
1932 r = dm_sm_get_nr_blocks(pmd->metadata_sm, result); in dm_pool_get_metadata_dev_size()
1933 up_read(&pmd->root_lock); in dm_pool_get_metadata_dev_size()
1938 int dm_pool_get_data_dev_size(struct dm_pool_metadata *pmd, dm_block_t *result) in dm_pool_get_data_dev_size() argument
1942 down_read(&pmd->root_lock); in dm_pool_get_data_dev_size()
1943 if (!pmd->fail_io) in dm_pool_get_data_dev_size()
1944 r = dm_sm_get_nr_blocks(pmd->data_sm, result); in dm_pool_get_data_dev_size()
1945 up_read(&pmd->root_lock); in dm_pool_get_data_dev_size()
1953 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_get_mapped_count() local
1955 down_read(&pmd->root_lock); in dm_thin_get_mapped_count()
1956 if (!pmd->fail_io) { in dm_thin_get_mapped_count()
1960 up_read(&pmd->root_lock); in dm_thin_get_mapped_count()
1970 struct dm_pool_metadata *pmd = td->pmd; in __highest_block() local
1972 r = dm_btree_lookup(&pmd->tl_info, pmd->root, &td->id, &value_le); in __highest_block()
1978 return dm_btree_find_highest_key(&pmd->bl_info, thin_root, result); in __highest_block()
1985 struct dm_pool_metadata *pmd = td->pmd; in dm_thin_get_highest_mapped_block() local
1987 down_read(&pmd->root_lock); in dm_thin_get_highest_mapped_block()
1988 if (!pmd->fail_io) in dm_thin_get_highest_mapped_block()
1990 up_read(&pmd->root_lock); in dm_thin_get_highest_mapped_block()
2015 int dm_pool_resize_data_dev(struct dm_pool_metadata *pmd, dm_block_t new_count) in dm_pool_resize_data_dev() argument
2019 pmd_write_lock(pmd); in dm_pool_resize_data_dev()
2020 if (!pmd->fail_io) in dm_pool_resize_data_dev()
2021 r = __resize_space_map(pmd->data_sm, new_count); in dm_pool_resize_data_dev()
2022 pmd_write_unlock(pmd); in dm_pool_resize_data_dev()
2027 int dm_pool_resize_metadata_dev(struct dm_pool_metadata *pmd, dm_block_t new_count) in dm_pool_resize_metadata_dev() argument
2031 pmd_write_lock(pmd); in dm_pool_resize_metadata_dev()
2032 if (!pmd->fail_io) { in dm_pool_resize_metadata_dev()
2033 r = __resize_space_map(pmd->metadata_sm, new_count); in dm_pool_resize_metadata_dev()
2035 __set_metadata_reserve(pmd); in dm_pool_resize_metadata_dev()
2037 pmd_write_unlock(pmd); in dm_pool_resize_metadata_dev()
2042 void dm_pool_metadata_read_only(struct dm_pool_metadata *pmd) in dm_pool_metadata_read_only() argument
2044 pmd_write_lock_in_core(pmd); in dm_pool_metadata_read_only()
2045 dm_bm_set_read_only(pmd->bm); in dm_pool_metadata_read_only()
2046 pmd_write_unlock(pmd); in dm_pool_metadata_read_only()
2049 void dm_pool_metadata_read_write(struct dm_pool_metadata *pmd) in dm_pool_metadata_read_write() argument
2051 pmd_write_lock_in_core(pmd); in dm_pool_metadata_read_write()
2052 dm_bm_set_read_write(pmd->bm); in dm_pool_metadata_read_write()
2053 pmd_write_unlock(pmd); in dm_pool_metadata_read_write()
2056 int dm_pool_register_metadata_threshold(struct dm_pool_metadata *pmd, in dm_pool_register_metadata_threshold() argument
2063 pmd_write_lock_in_core(pmd); in dm_pool_register_metadata_threshold()
2064 if (!pmd->fail_io) { in dm_pool_register_metadata_threshold()
2065 r = dm_sm_register_threshold_callback(pmd->metadata_sm, in dm_pool_register_metadata_threshold()
2068 pmd_write_unlock(pmd); in dm_pool_register_metadata_threshold()
2073 void dm_pool_register_pre_commit_callback(struct dm_pool_metadata *pmd, in dm_pool_register_pre_commit_callback() argument
2077 pmd_write_lock_in_core(pmd); in dm_pool_register_pre_commit_callback()
2078 pmd->pre_commit_fn = fn; in dm_pool_register_pre_commit_callback()
2079 pmd->pre_commit_context = context; in dm_pool_register_pre_commit_callback()
2080 pmd_write_unlock(pmd); in dm_pool_register_pre_commit_callback()
2083 int dm_pool_metadata_set_needs_check(struct dm_pool_metadata *pmd) in dm_pool_metadata_set_needs_check() argument
2089 pmd_write_lock(pmd); in dm_pool_metadata_set_needs_check()
2090 if (pmd->fail_io) in dm_pool_metadata_set_needs_check()
2093 pmd->flags |= THIN_METADATA_NEEDS_CHECK_FLAG; in dm_pool_metadata_set_needs_check()
2095 r = superblock_lock(pmd, &sblock); in dm_pool_metadata_set_needs_check()
2102 disk_super->flags = cpu_to_le32(pmd->flags); in dm_pool_metadata_set_needs_check()
2106 pmd_write_unlock(pmd); in dm_pool_metadata_set_needs_check()
2110 bool dm_pool_metadata_needs_check(struct dm_pool_metadata *pmd) in dm_pool_metadata_needs_check() argument
2114 down_read(&pmd->root_lock); in dm_pool_metadata_needs_check()
2115 needs_check = pmd->flags & THIN_METADATA_NEEDS_CHECK_FLAG; in dm_pool_metadata_needs_check()
2116 up_read(&pmd->root_lock); in dm_pool_metadata_needs_check()
2121 void dm_pool_issue_prefetches(struct dm_pool_metadata *pmd) in dm_pool_issue_prefetches() argument
2123 down_read(&pmd->root_lock); in dm_pool_issue_prefetches()
2124 if (!pmd->fail_io) in dm_pool_issue_prefetches()
2125 dm_tm_issue_prefetches(pmd->tm); in dm_pool_issue_prefetches()
2126 up_read(&pmd->root_lock); in dm_pool_issue_prefetches()