Lines Matching +full:high +full:- +full:vt
1 // SPDX-License-Identifier: GPL-2.0-only
8 #include "dm-cache-metadata.h"
10 #include "persistent-data/dm-array.h"
11 #include "persistent-data/dm-bitset.h"
12 #include "persistent-data/dm-space-map.h"
13 #include "persistent-data/dm-space-map-disk.h"
14 #include "persistent-data/dm-transaction-manager.h"
16 #include <linux/device-mapper.h>
19 /*----------------------------------------------------------------*/
47 * Each mapping from cache block -> origin block carries a set of flags.
167 *-----------------------------------------------------------------
169 *-----------------------------------------------------------------
179 disk_super->blocknr = cpu_to_le64(dm_block_location(b)); in sb_prepare_for_write()
180 disk_super->csum = cpu_to_le32(dm_bm_checksum(&disk_super->flags, in sb_prepare_for_write()
181 sb_block_size - sizeof(__le32), in sb_prepare_for_write()
187 uint32_t metadata_version = le32_to_cpu(disk_super->version); in check_metadata_version()
192 return -EINVAL; in check_metadata_version()
205 if (dm_block_location(b) != le64_to_cpu(disk_super->blocknr)) { in sb_check()
207 __func__, le64_to_cpu(disk_super->blocknr), in sb_check()
209 return -ENOTBLK; in sb_check()
212 if (le64_to_cpu(disk_super->magic) != CACHE_SUPERBLOCK_MAGIC) { in sb_check()
214 __func__, le64_to_cpu(disk_super->magic), in sb_check()
216 return -EILSEQ; in sb_check()
219 csum_le = cpu_to_le32(dm_bm_checksum(&disk_super->flags, in sb_check()
220 sb_block_size - sizeof(__le32), in sb_check()
222 if (csum_le != disk_super->csum) { in sb_check()
224 __func__, le32_to_cpu(csum_le), le32_to_cpu(disk_super->csum)); in sb_check()
225 return -EILSEQ; in sb_check()
237 /*----------------------------------------------------------------*/
242 return dm_bm_read_lock(cmd->bm, CACHE_SUPERBLOCK_LOCATION, in superblock_read_lock()
249 return dm_bm_write_lock_zero(cmd->bm, CACHE_SUPERBLOCK_LOCATION, in superblock_lock_zero()
256 return dm_bm_write_lock(cmd->bm, CACHE_SUPERBLOCK_LOCATION, in superblock_lock()
260 /*----------------------------------------------------------------*/
271 * We can't use a validator here - it may be all zeroes. in __superblock_all_zeroes()
293 struct dm_btree_value_type vt; in __setup_mapping_info() local
295 vt.context = NULL; in __setup_mapping_info()
296 vt.size = sizeof(__le64); in __setup_mapping_info()
297 vt.inc = NULL; in __setup_mapping_info()
298 vt.dec = NULL; in __setup_mapping_info()
299 vt.equal = NULL; in __setup_mapping_info()
300 dm_array_info_init(&cmd->info, cmd->tm, &vt); in __setup_mapping_info()
302 if (cmd->policy_hint_size) { in __setup_mapping_info()
303 vt.size = sizeof(__le32); in __setup_mapping_info()
304 dm_array_info_init(&cmd->hint_info, cmd->tm, &vt); in __setup_mapping_info()
313 r = dm_sm_root_size(cmd->metadata_sm, &metadata_len); in __save_sm_root()
317 return dm_sm_copy_root(cmd->metadata_sm, &cmd->metadata_space_map_root, in __save_sm_root()
324 memcpy(&disk_super->metadata_space_map_root, in __copy_sm_root()
325 &cmd->metadata_space_map_root, in __copy_sm_root()
326 sizeof(cmd->metadata_space_map_root)); in __copy_sm_root()
331 return cmd->version >= 2; in separate_dirty_bits()
339 sector_t bdev_size = bdev_nr_sectors(cmd->bdev); in __write_initial_superblock()
345 r = dm_tm_pre_commit(cmd->tm); in __write_initial_superblock()
362 disk_super->flags = 0; in __write_initial_superblock()
363 memset(disk_super->uuid, 0, sizeof(disk_super->uuid)); in __write_initial_superblock()
364 disk_super->magic = cpu_to_le64(CACHE_SUPERBLOCK_MAGIC); in __write_initial_superblock()
365 disk_super->version = cpu_to_le32(cmd->version); in __write_initial_superblock()
366 memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name)); in __write_initial_superblock()
367 memset(disk_super->policy_version, 0, sizeof(disk_super->policy_version)); in __write_initial_superblock()
368 disk_super->policy_hint_size = cpu_to_le32(0); in __write_initial_superblock()
372 disk_super->mapping_root = cpu_to_le64(cmd->root); in __write_initial_superblock()
373 disk_super->hint_root = cpu_to_le64(cmd->hint_root); in __write_initial_superblock()
374 disk_super->discard_root = cpu_to_le64(cmd->discard_root); in __write_initial_superblock()
375 disk_super->discard_block_size = cpu_to_le64(cmd->discard_block_size); in __write_initial_superblock()
376 disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks)); in __write_initial_superblock()
377 disk_super->metadata_block_size = cpu_to_le32(DM_CACHE_METADATA_BLOCK_SIZE); in __write_initial_superblock()
378 disk_super->data_block_size = cpu_to_le32(cmd->data_block_size); in __write_initial_superblock()
379 disk_super->cache_blocks = cpu_to_le32(0); in __write_initial_superblock()
381 disk_super->read_hits = cpu_to_le32(0); in __write_initial_superblock()
382 disk_super->read_misses = cpu_to_le32(0); in __write_initial_superblock()
383 disk_super->write_hits = cpu_to_le32(0); in __write_initial_superblock()
384 disk_super->write_misses = cpu_to_le32(0); in __write_initial_superblock()
387 disk_super->dirty_root = cpu_to_le64(cmd->dirty_root); in __write_initial_superblock()
389 return dm_tm_commit(cmd->tm, sblock); in __write_initial_superblock()
396 r = dm_tm_create_with_sm(cmd->bm, CACHE_SUPERBLOCK_LOCATION, in __format_metadata()
397 &cmd->tm, &cmd->metadata_sm); in __format_metadata()
405 r = dm_array_empty(&cmd->info, &cmd->root); in __format_metadata()
410 dm_disk_bitset_init(cmd->tm, &cmd->dirty_info); in __format_metadata()
411 r = dm_bitset_empty(&cmd->dirty_info, &cmd->dirty_root); in __format_metadata()
416 dm_disk_bitset_init(cmd->tm, &cmd->discard_info); in __format_metadata()
417 r = dm_bitset_empty(&cmd->discard_info, &cmd->discard_root); in __format_metadata()
421 cmd->discard_block_size = 0; in __format_metadata()
422 cmd->discard_nr_blocks = 0; in __format_metadata()
428 cmd->clean_when_opened = true; in __format_metadata()
432 dm_tm_destroy(cmd->tm); in __format_metadata()
433 dm_sm_destroy(cmd->metadata_sm); in __format_metadata()
443 incompat_flags = le32_to_cpu(disk_super->incompat_flags); in __check_incompat_features()
448 return -EINVAL; in __check_incompat_features()
452 * Check for read-only metadata to skip the following RDWR checks. in __check_incompat_features()
454 if (bdev_read_only(cmd->bdev)) in __check_incompat_features()
457 features = le32_to_cpu(disk_super->compat_ro_flags) & ~DM_CACHE_FEATURE_COMPAT_RO_SUPP; in __check_incompat_features()
461 return -EINVAL; in __check_incompat_features()
483 if (le32_to_cpu(disk_super->data_block_size) != cmd->data_block_size) { in __open_metadata()
485 le32_to_cpu(disk_super->data_block_size), in __open_metadata()
486 (unsigned long long)cmd->data_block_size); in __open_metadata()
487 r = -EINVAL; in __open_metadata()
495 r = dm_tm_open_with_sm(cmd->bm, CACHE_SUPERBLOCK_LOCATION, in __open_metadata()
496 disk_super->metadata_space_map_root, in __open_metadata()
497 sizeof(disk_super->metadata_space_map_root), in __open_metadata()
498 &cmd->tm, &cmd->metadata_sm); in __open_metadata()
505 dm_disk_bitset_init(cmd->tm, &cmd->dirty_info); in __open_metadata()
506 dm_disk_bitset_init(cmd->tm, &cmd->discard_info); in __open_metadata()
507 sb_flags = le32_to_cpu(disk_super->flags); in __open_metadata()
508 cmd->clean_when_opened = test_bit(CLEAN_SHUTDOWN, &sb_flags); in __open_metadata()
524 r = __superblock_all_zeroes(cmd->bm, &unformatted); in __open_or_format_metadata()
529 return format_device ? __format_metadata(cmd) : -EPERM; in __open_or_format_metadata()
539 cmd->bm = dm_block_manager_create(cmd->bdev, DM_CACHE_METADATA_BLOCK_SIZE << SECTOR_SHIFT, in __create_persistent_data_objects()
541 if (IS_ERR(cmd->bm)) { in __create_persistent_data_objects()
543 r = PTR_ERR(cmd->bm); in __create_persistent_data_objects()
544 cmd->bm = NULL; in __create_persistent_data_objects()
550 dm_block_manager_destroy(cmd->bm); in __create_persistent_data_objects()
551 cmd->bm = NULL; in __create_persistent_data_objects()
560 dm_sm_destroy(cmd->metadata_sm); in __destroy_persistent_data_objects()
561 dm_tm_destroy(cmd->tm); in __destroy_persistent_data_objects()
563 dm_block_manager_destroy(cmd->bm); in __destroy_persistent_data_objects()
571 uint32_t sb_flags = mutator(le32_to_cpu(disk_super->flags)); in update_flags()
573 disk_super->flags = cpu_to_le32(sb_flags); in update_flags()
591 cmd->version = le32_to_cpu(disk_super->version); in read_superblock_fields()
592 cmd->flags = le32_to_cpu(disk_super->flags); in read_superblock_fields()
593 cmd->root = le64_to_cpu(disk_super->mapping_root); in read_superblock_fields()
594 cmd->hint_root = le64_to_cpu(disk_super->hint_root); in read_superblock_fields()
595 cmd->discard_root = le64_to_cpu(disk_super->discard_root); in read_superblock_fields()
596 cmd->discard_block_size = le64_to_cpu(disk_super->discard_block_size); in read_superblock_fields()
597 cmd->discard_nr_blocks = to_dblock(le64_to_cpu(disk_super->discard_nr_blocks)); in read_superblock_fields()
598 cmd->data_block_size = le32_to_cpu(disk_super->data_block_size); in read_superblock_fields()
599 cmd->cache_blocks = to_cblock(le32_to_cpu(disk_super->cache_blocks)); in read_superblock_fields()
600 strncpy(cmd->policy_name, disk_super->policy_name, sizeof(cmd->policy_name)); in read_superblock_fields()
601 cmd->policy_version[0] = le32_to_cpu(disk_super->policy_version[0]); in read_superblock_fields()
602 cmd->policy_version[1] = le32_to_cpu(disk_super->policy_version[1]); in read_superblock_fields()
603 cmd->policy_version[2] = le32_to_cpu(disk_super->policy_version[2]); in read_superblock_fields()
604 cmd->policy_hint_size = le32_to_cpu(disk_super->policy_hint_size); in read_superblock_fields()
606 cmd->stats.read_hits = le32_to_cpu(disk_super->read_hits); in read_superblock_fields()
607 cmd->stats.read_misses = le32_to_cpu(disk_super->read_misses); in read_superblock_fields()
608 cmd->stats.write_hits = le32_to_cpu(disk_super->write_hits); in read_superblock_fields()
609 cmd->stats.write_misses = le32_to_cpu(disk_super->write_misses); in read_superblock_fields()
612 cmd->dirty_root = le64_to_cpu(disk_super->dirty_root); in read_superblock_fields()
614 cmd->changed = false; in read_superblock_fields()
636 return dm_bm_flush(cmd->bm); in __begin_transaction_flags()
646 * We re-read the superblock every time. Shouldn't need to do this in __begin_transaction()
668 * We need to know if the cache_disk_superblock exceeds a 512-byte sector. in __commit_transaction()
673 r = dm_bitset_flush(&cmd->dirty_info, cmd->dirty_root, in __commit_transaction()
674 &cmd->dirty_root); in __commit_transaction()
679 r = dm_bitset_flush(&cmd->discard_info, cmd->discard_root, in __commit_transaction()
680 &cmd->discard_root); in __commit_transaction()
684 r = dm_tm_pre_commit(cmd->tm); in __commit_transaction()
698 disk_super->flags = cpu_to_le32(cmd->flags); in __commit_transaction()
702 disk_super->mapping_root = cpu_to_le64(cmd->root); in __commit_transaction()
704 disk_super->dirty_root = cpu_to_le64(cmd->dirty_root); in __commit_transaction()
705 disk_super->hint_root = cpu_to_le64(cmd->hint_root); in __commit_transaction()
706 disk_super->discard_root = cpu_to_le64(cmd->discard_root); in __commit_transaction()
707 disk_super->discard_block_size = cpu_to_le64(cmd->discard_block_size); in __commit_transaction()
708 disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks)); in __commit_transaction()
709 disk_super->cache_blocks = cpu_to_le32(from_cblock(cmd->cache_blocks)); in __commit_transaction()
710 strncpy(disk_super->policy_name, cmd->policy_name, sizeof(disk_super->policy_name)); in __commit_transaction()
711 disk_super->policy_version[0] = cpu_to_le32(cmd->policy_version[0]); in __commit_transaction()
712 disk_super->policy_version[1] = cpu_to_le32(cmd->policy_version[1]); in __commit_transaction()
713 disk_super->policy_version[2] = cpu_to_le32(cmd->policy_version[2]); in __commit_transaction()
714 disk_super->policy_hint_size = cpu_to_le32(cmd->policy_hint_size); in __commit_transaction()
716 disk_super->read_hits = cpu_to_le32(cmd->stats.read_hits); in __commit_transaction()
717 disk_super->read_misses = cpu_to_le32(cmd->stats.read_misses); in __commit_transaction()
718 disk_super->write_hits = cpu_to_le32(cmd->stats.write_hits); in __commit_transaction()
719 disk_super->write_misses = cpu_to_le32(cmd->stats.write_misses); in __commit_transaction()
722 return dm_tm_commit(cmd->tm, sblock); in __commit_transaction()
725 /*----------------------------------------------------------------*/
728 * The mappings are held in a dm-array that has 64-bit values stored in
729 * little-endian format. The index is the cblock, the high 48bits of the
732 #define FLAGS_MASK ((1 << 16) - 1)
752 /*----------------------------------------------------------------*/
766 return ERR_PTR(-ENOMEM); in metadata_open()
769 cmd->version = metadata_version; in metadata_open()
770 refcount_set(&cmd->ref_count, 1); in metadata_open()
771 init_rwsem(&cmd->root_lock); in metadata_open()
772 cmd->bdev = bdev; in metadata_open()
773 cmd->data_block_size = data_block_size; in metadata_open()
774 cmd->cache_blocks = 0; in metadata_open()
775 cmd->policy_hint_size = policy_hint_size; in metadata_open()
776 cmd->changed = true; in metadata_open()
777 cmd->fail_io = false; in metadata_open()
807 if (cmd->bdev == bdev) { in lookup()
808 refcount_inc(&cmd->ref_count); in lookup()
841 list_add(&cmd->list, &table); in lookup_or_open()
850 if (cmd->data_block_size != data_block_size) { in same_params()
853 (unsigned long long) cmd->data_block_size); in same_params()
871 return ERR_PTR(-EINVAL); in dm_cache_metadata_open()
879 if (refcount_dec_and_test(&cmd->ref_count)) { in dm_cache_metadata_close()
881 list_del(&cmd->list); in dm_cache_metadata_close()
884 if (!cmd->fail_io) in dm_cache_metadata_close()
901 r = dm_array_get_value(&cmd->info, cmd->root, from_cblock(b), &value); in block_clean_combined_dirty()
945 if (from_cblock(cmd->cache_blocks) == 0) in blocks_are_clean_separate_dirty()
949 r = dm_bitset_cursor_begin(&cmd->dirty_info, cmd->dirty_root, in blocks_are_clean_separate_dirty()
950 from_cblock(cmd->cache_blocks), &cmd->dirty_cursor); in blocks_are_clean_separate_dirty()
956 r = dm_bitset_cursor_skip(&cmd->dirty_cursor, from_cblock(begin)); in blocks_are_clean_separate_dirty()
959 dm_bitset_cursor_end(&cmd->dirty_cursor); in blocks_are_clean_separate_dirty()
968 dirty_flag = dm_bitset_cursor_get_value(&cmd->dirty_cursor); in blocks_are_clean_separate_dirty()
972 dm_bitset_cursor_end(&cmd->dirty_cursor); in blocks_are_clean_separate_dirty()
981 r = dm_bitset_cursor_next(&cmd->dirty_cursor); in blocks_are_clean_separate_dirty()
984 dm_bitset_cursor_end(&cmd->dirty_cursor); in blocks_are_clean_separate_dirty()
989 dm_bitset_cursor_end(&cmd->dirty_cursor); in blocks_are_clean_separate_dirty()
1006 down_write(&cmd->root_lock); in cmd_write_lock()
1007 if (cmd->fail_io || dm_bm_is_read_only(cmd->bm)) { in cmd_write_lock()
1008 up_write(&cmd->root_lock); in cmd_write_lock()
1017 return -EINVAL; \
1027 up_write(&(cmd)->root_lock)
1031 down_read(&cmd->root_lock); in cmd_read_lock()
1032 if (cmd->fail_io) { in cmd_read_lock()
1033 up_read(&cmd->root_lock); in cmd_read_lock()
1042 return -EINVAL; \
1052 up_read(&(cmd)->root_lock)
1063 if (from_cblock(new_cache_size) < from_cblock(cmd->cache_blocks)) { in dm_cache_resize()
1064 r = blocks_are_unmapped_or_clean(cmd, new_cache_size, cmd->cache_blocks, &clean); in dm_cache_resize()
1072 r = -EINVAL; in dm_cache_resize()
1078 r = dm_array_resize(&cmd->info, cmd->root, from_cblock(cmd->cache_blocks), in dm_cache_resize()
1080 &null_mapping, &cmd->root); in dm_cache_resize()
1085 r = dm_bitset_resize(&cmd->dirty_info, cmd->dirty_root, in dm_cache_resize()
1086 from_cblock(cmd->cache_blocks), from_cblock(new_cache_size), in dm_cache_resize()
1087 false, &cmd->dirty_root); in dm_cache_resize()
1092 cmd->cache_blocks = new_cache_size; in dm_cache_resize()
1093 cmd->changed = true; in dm_cache_resize()
1108 r = dm_bitset_resize(&cmd->discard_info, in dm_cache_discard_bitset_resize()
1109 cmd->discard_root, in dm_cache_discard_bitset_resize()
1110 from_dblock(cmd->discard_nr_blocks), in dm_cache_discard_bitset_resize()
1112 false, &cmd->discard_root); in dm_cache_discard_bitset_resize()
1114 cmd->discard_block_size = discard_block_size; in dm_cache_discard_bitset_resize()
1115 cmd->discard_nr_blocks = new_nr_entries; in dm_cache_discard_bitset_resize()
1118 cmd->changed = true; in dm_cache_discard_bitset_resize()
1126 return dm_bitset_set_bit(&cmd->discard_info, cmd->discard_root, in __set_discard()
1127 from_dblock(b), &cmd->discard_root); in __set_discard()
1132 return dm_bitset_clear_bit(&cmd->discard_info, cmd->discard_root, in __clear_discard()
1133 from_dblock(b), &cmd->discard_root); in __clear_discard()
1145 cmd->changed = true; in __discard()
1168 if (from_dblock(cmd->discard_nr_blocks) == 0) in __load_discards()
1172 if (cmd->clean_when_opened) { in __load_discards()
1173 r = dm_bitset_flush(&cmd->discard_info, cmd->discard_root, &cmd->discard_root); in __load_discards()
1177 r = dm_bitset_cursor_begin(&cmd->discard_info, cmd->discard_root, in __load_discards()
1178 from_dblock(cmd->discard_nr_blocks), &c); in __load_discards()
1183 r = fn(context, cmd->discard_block_size, to_dblock(b), in __load_discards()
1188 if (b >= (from_dblock(cmd->discard_nr_blocks) - 1)) in __load_discards()
1199 for (b = 0; b < from_dblock(cmd->discard_nr_blocks); b++) { in __load_discards()
1200 r = fn(context, cmd->discard_block_size, to_dblock(b), false); in __load_discards()
1224 *result = cmd->cache_blocks; in dm_cache_size()
1236 r = dm_array_set_value(&cmd->info, cmd->root, from_cblock(cblock), in __remove()
1237 &value, &cmd->root); in __remove()
1241 cmd->changed = true; in __remove()
1264 r = dm_array_set_value(&cmd->info, cmd->root, from_cblock(cblock), in __insert()
1265 &value, &cmd->root); in __insert()
1269 cmd->changed = true; in __insert()
1304 if (strncmp(cmd->policy_name, policy_name, sizeof(cmd->policy_name))) in policy_unchanged()
1310 if (cmd->policy_version[0] != policy_version[0]) in policy_unchanged()
1316 if (cmd->policy_hint_size != policy_hint_size) in policy_unchanged()
1324 return cmd->hint_root && cmd->policy_hint_size; in hints_array_initialized()
1330 return cmd->clean_when_opened && policy_unchanged(cmd, policy) && in hints_array_available()
1361 if (cmd->clean_when_opened) in __load_mapping_v1()
1403 if (cmd->clean_when_opened) in __load_mapping_v2()
1426 if (from_cblock(cmd->cache_blocks) == 0) in __load_mappings()
1430 r = dm_array_cursor_begin(&cmd->info, cmd->root, &cmd->mapping_cursor); in __load_mappings()
1435 r = dm_array_cursor_begin(&cmd->hint_info, cmd->hint_root, &cmd->hint_cursor); in __load_mappings()
1437 dm_array_cursor_end(&cmd->mapping_cursor); in __load_mappings()
1443 r = dm_bitset_cursor_begin(&cmd->dirty_info, cmd->dirty_root, in __load_mappings()
1444 from_cblock(cmd->cache_blocks), in __load_mappings()
1445 &cmd->dirty_cursor); in __load_mappings()
1447 dm_array_cursor_end(&cmd->hint_cursor); in __load_mappings()
1448 dm_array_cursor_end(&cmd->mapping_cursor); in __load_mappings()
1456 &cmd->mapping_cursor, in __load_mappings()
1457 &cmd->hint_cursor, in __load_mappings()
1458 &cmd->dirty_cursor, in __load_mappings()
1462 &cmd->mapping_cursor, &cmd->hint_cursor, in __load_mappings()
1470 if (cb >= (from_cblock(cmd->cache_blocks) - 1)) in __load_mappings()
1473 r = dm_array_cursor_next(&cmd->mapping_cursor); in __load_mappings()
1480 r = dm_array_cursor_next(&cmd->hint_cursor); in __load_mappings()
1482 dm_array_cursor_end(&cmd->hint_cursor); in __load_mappings()
1488 r = dm_bitset_cursor_next(&cmd->dirty_cursor); in __load_mappings()
1496 dm_array_cursor_end(&cmd->mapping_cursor); in __load_mappings()
1498 dm_array_cursor_end(&cmd->hint_cursor); in __load_mappings()
1501 dm_bitset_cursor_end(&cmd->dirty_cursor); in __load_mappings()
1533 return dm_array_walk(&cmd->info, cmd->root, __dump_mapping, NULL); in __dump_mappings()
1548 r = cmd->changed; in dm_cache_changed_this_transaction()
1561 r = dm_array_get_value(&cmd->info, cmd->root, from_cblock(cblock), &value); in __dirty()
1574 r = dm_array_set_value(&cmd->info, cmd->root, from_cblock(cblock), in __dirty()
1575 &value, &cmd->root); in __dirty()
1579 cmd->changed = true; in __dirty()
1610 if (nr_bits != from_cblock(cmd->cache_blocks)) { in __set_dirty_bits_v2()
1612 return -EINVAL; in __set_dirty_bits_v2()
1615 r = dm_bitset_del(&cmd->dirty_info, cmd->dirty_root); in __set_dirty_bits_v2()
1619 cmd->changed = true; in __set_dirty_bits_v2()
1620 return dm_bitset_new(&cmd->dirty_info, &cmd->dirty_root, nr_bits, is_dirty_callback, bits); in __set_dirty_bits_v2()
1643 *stats = cmd->stats; in dm_cache_metadata_get_stats()
1651 cmd->stats = *stats; in dm_cache_metadata_set_stats()
1657 int r = -EINVAL; in dm_cache_commit()
1662 if (cmd->fail_io) in dm_cache_commit()
1678 int r = -EINVAL; in dm_cache_get_free_metadata_block_count()
1681 if (!cmd->fail_io) in dm_cache_get_free_metadata_block_count()
1682 r = dm_sm_get_nr_free(cmd->metadata_sm, result); in dm_cache_get_free_metadata_block_count()
1691 int r = -EINVAL; in dm_cache_get_metadata_dev_size()
1694 if (!cmd->fail_io) in dm_cache_get_metadata_dev_size()
1695 r = dm_sm_get_nr_blocks(cmd->metadata_sm, result); in dm_cache_get_metadata_dev_size()
1701 /*----------------------------------------------------------------*/
1726 (strlen(policy_name) > sizeof(cmd->policy_name) - 1)) in write_hints()
1727 return -EINVAL; in write_hints()
1729 strncpy(cmd->policy_name, policy_name, sizeof(cmd->policy_name)); in write_hints()
1730 memcpy(cmd->policy_version, policy_version, sizeof(cmd->policy_version)); in write_hints()
1734 return 0; /* short-circuit hints initialization */ in write_hints()
1735 cmd->policy_hint_size = hint_size; in write_hints()
1737 if (cmd->hint_root) { in write_hints()
1738 r = dm_array_del(&cmd->hint_info, cmd->hint_root); in write_hints()
1743 return dm_array_new(&cmd->hint_info, &cmd->hint_root, in write_hints()
1744 from_cblock(cmd->cache_blocks), in write_hints()
1764 r = blocks_are_unmapped_or_clean(cmd, 0, cmd->cache_blocks, result); in dm_cache_metadata_all_clean()
1773 dm_bm_set_read_only(cmd->bm); in dm_cache_metadata_set_read_only()
1780 dm_bm_set_read_write(cmd->bm); in dm_cache_metadata_set_read_write()
1791 set_bit(NEEDS_CHECK, &cmd->flags); in dm_cache_metadata_set_needs_check()
1800 disk_super->flags = cpu_to_le32(cmd->flags); in dm_cache_metadata_set_needs_check()
1812 *result = !!test_bit(NEEDS_CHECK, &cmd->flags); in dm_cache_metadata_needs_check()
1820 int r = -EINVAL; in dm_cache_metadata_abort()
1823 /* fail_io is double-checked with cmd->root_lock held below */ in dm_cache_metadata_abort()
1824 if (unlikely(cmd->fail_io)) in dm_cache_metadata_abort()
1829 * cmd root_lock to avoid ABBA deadlock that would result (due to life-cycle of in dm_cache_metadata_abort()
1831 * - must take shrinker_rwsem without holding cmd->root_lock in dm_cache_metadata_abort()
1833 new_bm = dm_block_manager_create(cmd->bdev, DM_CACHE_METADATA_BLOCK_SIZE << SECTOR_SHIFT, in dm_cache_metadata_abort()
1837 if (cmd->fail_io) { in dm_cache_metadata_abort()
1843 old_bm = cmd->bm; in dm_cache_metadata_abort()
1846 cmd->bm = NULL; in dm_cache_metadata_abort()
1851 cmd->bm = new_bm; in dm_cache_metadata_abort()
1854 cmd->bm = NULL; in dm_cache_metadata_abort()
1860 cmd->fail_io = true; in dm_cache_metadata_abort()