Lines Matching refs:md
34 struct writeset_metadata md; member
94 ws->md.nr_bits = nr_blocks; in writeset_init()
95 r = setup_on_disk_bitset(info, ws->md.nr_bits, &ws->md.root); in writeset_init()
139 r = dm_bitset_set_bit(info, ws->md.root, block, &ws->md.root); in writeset_test_and_set()
301 static int superblock_read_lock(struct era_metadata *md, in superblock_read_lock() argument
304 return dm_bm_read_lock(md->bm, SUPERBLOCK_LOCATION, in superblock_read_lock()
308 static int superblock_lock_zero(struct era_metadata *md, in superblock_lock_zero() argument
311 return dm_bm_write_lock_zero(md->bm, SUPERBLOCK_LOCATION, in superblock_lock_zero()
315 static int superblock_lock(struct era_metadata *md, in superblock_lock() argument
318 return dm_bm_write_lock(md->bm, SUPERBLOCK_LOCATION, in superblock_lock()
368 struct era_metadata *md = context; in ws_inc() local
375 dm_tm_inc(md->tm, b); in ws_inc()
380 struct era_metadata *md = context; in ws_dec() local
387 dm_bitset_del(&md->bitset_info, b); in ws_dec()
397 static void setup_writeset_tree_info(struct era_metadata *md) in setup_writeset_tree_info() argument
399 struct dm_btree_value_type *vt = &md->writeset_tree_info.value_type; in setup_writeset_tree_info()
400 md->writeset_tree_info.tm = md->tm; in setup_writeset_tree_info()
401 md->writeset_tree_info.levels = 1; in setup_writeset_tree_info()
402 vt->context = md; in setup_writeset_tree_info()
409 static void setup_era_array_info(struct era_metadata *md) in setup_era_array_info() argument
419 dm_array_info_init(&md->era_array_info, md->tm, &vt); in setup_era_array_info()
422 static void setup_infos(struct era_metadata *md) in setup_infos() argument
424 dm_disk_bitset_init(md->tm, &md->bitset_info); in setup_infos()
425 setup_writeset_tree_info(md); in setup_infos()
426 setup_era_array_info(md); in setup_infos()
431 static int create_fresh_metadata(struct era_metadata *md) in create_fresh_metadata() argument
435 r = dm_tm_create_with_sm(md->bm, SUPERBLOCK_LOCATION, in create_fresh_metadata()
436 &md->tm, &md->sm); in create_fresh_metadata()
442 setup_infos(md); in create_fresh_metadata()
444 r = dm_btree_empty(&md->writeset_tree_info, &md->writeset_tree_root); in create_fresh_metadata()
450 r = dm_array_empty(&md->era_array_info, &md->era_array_root); in create_fresh_metadata()
459 dm_sm_destroy(md->sm); in create_fresh_metadata()
460 dm_tm_destroy(md->tm); in create_fresh_metadata()
465 static int save_sm_root(struct era_metadata *md) in save_sm_root() argument
470 r = dm_sm_root_size(md->sm, &metadata_len); in save_sm_root()
474 return dm_sm_copy_root(md->sm, &md->metadata_space_map_root, in save_sm_root()
478 static void copy_sm_root(struct era_metadata *md, struct superblock_disk *disk) in copy_sm_root() argument
481 &md->metadata_space_map_root, in copy_sm_root()
482 sizeof(md->metadata_space_map_root)); in copy_sm_root()
490 static void prepare_superblock(struct era_metadata *md, struct superblock_disk *disk) in prepare_superblock() argument
499 copy_sm_root(md, disk); in prepare_superblock()
501 disk->data_block_size = cpu_to_le32(md->block_size); in prepare_superblock()
503 disk->nr_blocks = cpu_to_le32(md->nr_blocks); in prepare_superblock()
504 disk->current_era = cpu_to_le32(md->current_era); in prepare_superblock()
506 ws_pack(&md->current_writeset->md, &disk->current_writeset); in prepare_superblock()
507 disk->writeset_tree_root = cpu_to_le64(md->writeset_tree_root); in prepare_superblock()
508 disk->era_array_root = cpu_to_le64(md->era_array_root); in prepare_superblock()
509 disk->metadata_snap = cpu_to_le64(md->metadata_snap); in prepare_superblock()
512 static int write_superblock(struct era_metadata *md) in write_superblock() argument
518 r = save_sm_root(md); in write_superblock()
524 r = superblock_lock_zero(md, &sblock); in write_superblock()
529 prepare_superblock(md, disk); in write_superblock()
531 return dm_tm_commit(md->tm, sblock); in write_superblock()
537 static int format_metadata(struct era_metadata *md) in format_metadata() argument
541 r = create_fresh_metadata(md); in format_metadata()
545 r = write_superblock(md); in format_metadata()
547 dm_sm_destroy(md->sm); in format_metadata()
548 dm_tm_destroy(md->tm); in format_metadata()
555 static int open_metadata(struct era_metadata *md) in open_metadata() argument
561 r = superblock_read_lock(md, &sblock); in open_metadata()
570 if (le32_to_cpu(disk->data_block_size) != md->block_size) { in open_metadata()
572 le32_to_cpu(disk->data_block_size), md->block_size); in open_metadata()
577 r = dm_tm_open_with_sm(md->bm, SUPERBLOCK_LOCATION, in open_metadata()
580 &md->tm, &md->sm); in open_metadata()
586 setup_infos(md); in open_metadata()
588 md->nr_blocks = le32_to_cpu(disk->nr_blocks); in open_metadata()
589 md->current_era = le32_to_cpu(disk->current_era); in open_metadata()
591 ws_unpack(&disk->current_writeset, &md->current_writeset->md); in open_metadata()
592 md->writeset_tree_root = le64_to_cpu(disk->writeset_tree_root); in open_metadata()
593 md->era_array_root = le64_to_cpu(disk->era_array_root); in open_metadata()
594 md->metadata_snap = le64_to_cpu(disk->metadata_snap); in open_metadata()
595 md->archived_writesets = true; in open_metadata()
606 static int open_or_format_metadata(struct era_metadata *md, in open_or_format_metadata() argument
612 r = superblock_all_zeroes(md->bm, &unformatted); in open_or_format_metadata()
617 return may_format ? format_metadata(md) : -EPERM; in open_or_format_metadata()
619 return open_metadata(md); in open_or_format_metadata()
622 static int create_persistent_data_objects(struct era_metadata *md, in create_persistent_data_objects() argument
627 md->bm = dm_block_manager_create(md->bdev, DM_ERA_METADATA_BLOCK_SIZE, in create_persistent_data_objects()
629 if (IS_ERR(md->bm)) { in create_persistent_data_objects()
631 return PTR_ERR(md->bm); in create_persistent_data_objects()
634 r = open_or_format_metadata(md, may_format); in create_persistent_data_objects()
636 dm_block_manager_destroy(md->bm); in create_persistent_data_objects()
641 static void destroy_persistent_data_objects(struct era_metadata *md) in destroy_persistent_data_objects() argument
643 dm_sm_destroy(md->sm); in destroy_persistent_data_objects()
644 dm_tm_destroy(md->tm); in destroy_persistent_data_objects()
645 dm_block_manager_destroy(md->bm); in destroy_persistent_data_objects()
651 static void swap_writeset(struct era_metadata *md, struct writeset *new_writeset) in swap_writeset() argument
653 rcu_assign_pointer(md->current_writeset, new_writeset); in swap_writeset()
674 static int metadata_digest_lookup_writeset(struct era_metadata *md,
677 static int metadata_digest_remove_writeset(struct era_metadata *md, in metadata_digest_remove_writeset() argument
683 r = dm_btree_remove(&md->writeset_tree_info, md->writeset_tree_root, in metadata_digest_remove_writeset()
684 &key, &md->writeset_tree_root); in metadata_digest_remove_writeset()
696 static int metadata_digest_transcribe_writeset(struct era_metadata *md, in metadata_digest_transcribe_writeset() argument
714 r = dm_array_set_value(&md->era_array_info, md->era_array_root, in metadata_digest_transcribe_writeset()
715 b, &d->value, &md->era_array_root); in metadata_digest_transcribe_writeset()
730 static int metadata_digest_lookup_writeset(struct era_metadata *md, in metadata_digest_lookup_writeset() argument
737 r = dm_btree_find_lowest_key(&md->writeset_tree_info, in metadata_digest_lookup_writeset()
738 md->writeset_tree_root, &key); in metadata_digest_lookup_writeset()
744 r = dm_btree_lookup(&md->writeset_tree_info, in metadata_digest_lookup_writeset()
745 md->writeset_tree_root, &key, &disk); in metadata_digest_lookup_writeset()
763 dm_disk_bitset_init(md->tm, &d->info); in metadata_digest_lookup_writeset()
765 d->nr_bits = min(d->writeset.nr_bits, md->nr_blocks); in metadata_digest_lookup_writeset()
772 static int metadata_digest_start(struct era_metadata *md, struct digest *d) in metadata_digest_start() argument
792 struct era_metadata *md = kzalloc(sizeof(*md), GFP_KERNEL); in metadata_open() local
794 if (!md) in metadata_open()
797 md->bdev = bdev; in metadata_open()
798 md->block_size = block_size; in metadata_open()
800 md->writesets[0].md.root = INVALID_WRITESET_ROOT; in metadata_open()
801 md->writesets[1].md.root = INVALID_WRITESET_ROOT; in metadata_open()
802 md->current_writeset = &md->writesets[0]; in metadata_open()
804 r = create_persistent_data_objects(md, may_format); in metadata_open()
806 kfree(md); in metadata_open()
810 return md; in metadata_open()
813 static void metadata_close(struct era_metadata *md) in metadata_close() argument
815 writeset_free(&md->writesets[0]); in metadata_close()
816 writeset_free(&md->writesets[1]); in metadata_close()
817 destroy_persistent_data_objects(md); in metadata_close()
818 kfree(md); in metadata_close()
830 static int metadata_resize(struct era_metadata *md, void *arg) in metadata_resize() argument
842 writeset_free(&md->writesets[0]); in metadata_resize()
843 writeset_free(&md->writesets[1]); in metadata_resize()
845 r = writeset_alloc(&md->writesets[0], *new_size); in metadata_resize()
851 r = writeset_alloc(&md->writesets[1], *new_size); in metadata_resize()
854 writeset_free(&md->writesets[0]); in metadata_resize()
860 r = dm_array_resize(&md->era_array_info, md->era_array_root, in metadata_resize()
861 md->nr_blocks, *new_size, in metadata_resize()
862 &value, &md->era_array_root); in metadata_resize()
865 writeset_free(&md->writesets[0]); in metadata_resize()
866 writeset_free(&md->writesets[1]); in metadata_resize()
870 md->nr_blocks = *new_size; in metadata_resize()
874 static int metadata_era_archive(struct era_metadata *md) in metadata_era_archive() argument
880 r = dm_bitset_flush(&md->bitset_info, md->current_writeset->md.root, in metadata_era_archive()
881 &md->current_writeset->md.root); in metadata_era_archive()
887 ws_pack(&md->current_writeset->md, &value); in metadata_era_archive()
889 keys[0] = md->current_era; in metadata_era_archive()
891 r = dm_btree_insert(&md->writeset_tree_info, md->writeset_tree_root, in metadata_era_archive()
892 keys, &value, &md->writeset_tree_root); in metadata_era_archive()
899 md->current_writeset->md.root = INVALID_WRITESET_ROOT; in metadata_era_archive()
900 md->archived_writesets = true; in metadata_era_archive()
905 static struct writeset *next_writeset(struct era_metadata *md) in next_writeset() argument
907 return (md->current_writeset == &md->writesets[0]) ? in next_writeset()
908 &md->writesets[1] : &md->writesets[0]; in next_writeset()
911 static int metadata_new_era(struct era_metadata *md) in metadata_new_era() argument
914 struct writeset *new_writeset = next_writeset(md); in metadata_new_era()
916 r = writeset_init(&md->bitset_info, new_writeset, md->nr_blocks); in metadata_new_era()
922 swap_writeset(md, new_writeset); in metadata_new_era()
923 md->current_era++; in metadata_new_era()
928 static int metadata_era_rollover(struct era_metadata *md) in metadata_era_rollover() argument
932 if (md->current_writeset->md.root != INVALID_WRITESET_ROOT) { in metadata_era_rollover()
933 r = metadata_era_archive(md); in metadata_era_rollover()
941 r = metadata_new_era(md); in metadata_era_rollover()
951 static bool metadata_current_marked(struct era_metadata *md, dm_block_t block) in metadata_current_marked() argument
957 ws = rcu_dereference(md->current_writeset); in metadata_current_marked()
964 static int metadata_commit(struct era_metadata *md) in metadata_commit() argument
969 if (md->current_writeset->md.root != INVALID_WRITESET_ROOT) { in metadata_commit()
970 r = dm_bitset_flush(&md->bitset_info, md->current_writeset->md.root, in metadata_commit()
971 &md->current_writeset->md.root); in metadata_commit()
978 r = dm_tm_pre_commit(md->tm); in metadata_commit()
984 r = save_sm_root(md); in metadata_commit()
990 r = superblock_lock(md, &sblock); in metadata_commit()
996 prepare_superblock(md, dm_block_data(sblock)); in metadata_commit()
998 return dm_tm_commit(md->tm, sblock); in metadata_commit()
1001 static int metadata_checkpoint(struct era_metadata *md) in metadata_checkpoint() argument
1007 return metadata_era_rollover(md); in metadata_checkpoint()
1013 static int metadata_take_snap(struct era_metadata *md) in metadata_take_snap() argument
1018 if (md->metadata_snap != SUPERBLOCK_LOCATION) { in metadata_take_snap()
1023 r = metadata_era_rollover(md); in metadata_take_snap()
1029 r = metadata_commit(md); in metadata_take_snap()
1035 r = dm_sm_inc_block(md->sm, SUPERBLOCK_LOCATION); in metadata_take_snap()
1041 r = dm_tm_shadow_block(md->tm, SUPERBLOCK_LOCATION, in metadata_take_snap()
1045 dm_sm_dec_block(md->sm, SUPERBLOCK_LOCATION); in metadata_take_snap()
1050 r = dm_sm_inc_block(md->sm, md->writeset_tree_root); in metadata_take_snap()
1053 dm_tm_unlock(md->tm, clone); in metadata_take_snap()
1057 r = dm_sm_inc_block(md->sm, md->era_array_root); in metadata_take_snap()
1060 dm_sm_dec_block(md->sm, md->writeset_tree_root); in metadata_take_snap()
1061 dm_tm_unlock(md->tm, clone); in metadata_take_snap()
1065 md->metadata_snap = dm_block_location(clone); in metadata_take_snap()
1067 dm_tm_unlock(md->tm, clone); in metadata_take_snap()
1072 static int metadata_drop_snap(struct era_metadata *md) in metadata_drop_snap() argument
1079 if (md->metadata_snap == SUPERBLOCK_LOCATION) { in metadata_drop_snap()
1084 r = dm_tm_read_lock(md->tm, md->metadata_snap, &sb_validator, &clone); in metadata_drop_snap()
1094 md->metadata_snap = SUPERBLOCK_LOCATION; in metadata_drop_snap()
1097 r = dm_btree_del(&md->writeset_tree_info, in metadata_drop_snap()
1101 dm_tm_unlock(md->tm, clone); in metadata_drop_snap()
1105 r = dm_array_del(&md->era_array_info, le64_to_cpu(disk->era_array_root)); in metadata_drop_snap()
1108 dm_tm_unlock(md->tm, clone); in metadata_drop_snap()
1113 dm_tm_unlock(md->tm, clone); in metadata_drop_snap()
1115 return dm_sm_dec_block(md->sm, location); in metadata_drop_snap()
1125 static int metadata_get_stats(struct era_metadata *md, void *ptr) in metadata_get_stats() argument
1131 r = dm_sm_get_nr_free(md->sm, &nr_free); in metadata_get_stats()
1137 r = dm_sm_get_nr_blocks(md->sm, &nr_total); in metadata_get_stats()
1145 s->snap = md->metadata_snap; in metadata_get_stats()
1146 s->era = md->current_era; in metadata_get_stats()
1162 struct era_metadata *md; member
1229 r = era->digest.step(era->md, &era->digest); in process_old_eras()
1246 struct writeset *ws = era->md->current_writeset; in process_deferred_bios()
1260 r = writeset_test_and_set(&era->md->bitset_info, ws, in process_deferred_bios()
1275 r = metadata_commit(era->md); in process_deferred_bios()
1311 rpc->result = rpc->fn0 ? rpc->fn0(era->md) : rpc->fn1(era->md, rpc->arg); in process_rpc_calls()
1316 r = metadata_commit(era->md); in process_rpc_calls()
1328 if (era->md->archived_writesets) { in kick_off_digest()
1329 era->md->archived_writesets = false; in kick_off_digest()
1330 metadata_digest_start(era->md, &era->digest); in kick_off_digest()
1407 if (era->md) in era_destroy()
1408 metadata_close(era->md); in era_destroy()
1443 struct era_metadata *md; in era_ctr() local
1496 md = metadata_open(era->metadata_dev->bdev, era->sectors_per_block, true); in era_ctr()
1497 if (IS_ERR(md)) { in era_ctr()
1500 return PTR_ERR(md); in era_ctr()
1502 era->md = md; in era_ctr()
1549 !metadata_current_marked(era->md, block)) { in era_map()
1578 r = metadata_resize(era->md, &new_size); in era_preresume()
1584 r = metadata_commit(era->md); in era_preresume()