Lines Matching full:ic
104 #define journal_entry_tag(ic, je) ((__u8 *)&(je)->last_bytes[(ic)->sectors_per_block]) argument
296 struct dm_integrity_c *ic; member
314 struct dm_integrity_c *ic; member
326 struct dm_integrity_c *ic; member
384 static void dm_integrity_io_error(struct dm_integrity_c *ic, const char *msg, int err) in dm_integrity_io_error() argument
387 atomic64_inc(&ic->number_of_mismatches); in dm_integrity_io_error()
388 if (!cmpxchg(&ic->failed, 0, err)) in dm_integrity_io_error()
392 static int dm_integrity_failed(struct dm_integrity_c *ic) in dm_integrity_failed() argument
394 return READ_ONCE(ic->failed); in dm_integrity_failed()
397 static bool dm_integrity_disable_recalculate(struct dm_integrity_c *ic) in dm_integrity_disable_recalculate() argument
399 if (ic->legacy_recalculate) in dm_integrity_disable_recalculate()
401 if (!(ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) ? in dm_integrity_disable_recalculate()
402 ic->internal_hash_alg.key || ic->journal_mac_alg.key : in dm_integrity_disable_recalculate()
403 ic->internal_hash_alg.key && !ic->journal_mac_alg.key) in dm_integrity_disable_recalculate()
408 static commit_id_t dm_integrity_commit_id(struct dm_integrity_c *ic, unsigned i, in dm_integrity_commit_id() argument
415 return ic->commit_ids[seq] ^ cpu_to_le64(((__u64)i << 32) ^ j); in dm_integrity_commit_id()
418 static void get_area_and_offset(struct dm_integrity_c *ic, sector_t data_sector, in get_area_and_offset() argument
421 if (!ic->meta_dev) { in get_area_and_offset()
422 __u8 log2_interleave_sectors = ic->sb->log2_interleave_sectors; in get_area_and_offset()
431 #define sector_to_block(ic, n) \ argument
433 BUG_ON((n) & (unsigned)((ic)->sectors_per_block - 1)); \
434 (n) >>= (ic)->sb->log2_sectors_per_block; \
437 static __u64 get_metadata_sector_and_offset(struct dm_integrity_c *ic, sector_t area, in get_metadata_sector_and_offset() argument
443 ms = area << ic->sb->log2_interleave_sectors; in get_metadata_sector_and_offset()
444 if (likely(ic->log2_metadata_run >= 0)) in get_metadata_sector_and_offset()
445 ms += area << ic->log2_metadata_run; in get_metadata_sector_and_offset()
447 ms += area * ic->metadata_run; in get_metadata_sector_and_offset()
448 ms >>= ic->log2_buffer_sectors; in get_metadata_sector_and_offset()
450 sector_to_block(ic, offset); in get_metadata_sector_and_offset()
452 if (likely(ic->log2_tag_size >= 0)) { in get_metadata_sector_and_offset()
453 ms += offset >> (SECTOR_SHIFT + ic->log2_buffer_sectors - ic->log2_tag_size); in get_metadata_sector_and_offset()
454 mo = (offset << ic->log2_tag_size) & ((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - 1); in get_metadata_sector_and_offset()
456 ms += (__u64)offset * ic->tag_size >> (SECTOR_SHIFT + ic->log2_buffer_sectors); in get_metadata_sector_and_offset()
457 mo = (offset * ic->tag_size) & ((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - 1); in get_metadata_sector_and_offset()
463 static sector_t get_data_sector(struct dm_integrity_c *ic, sector_t area, sector_t offset) in get_data_sector() argument
467 if (ic->meta_dev) in get_data_sector()
470 result = area << ic->sb->log2_interleave_sectors; in get_data_sector()
471 if (likely(ic->log2_metadata_run >= 0)) in get_data_sector()
472 result += (area + 1) << ic->log2_metadata_run; in get_data_sector()
474 result += (area + 1) * ic->metadata_run; in get_data_sector()
476 result += (sector_t)ic->initial_sectors + offset; in get_data_sector()
477 result += ic->start; in get_data_sector()
482 static void wraparound_section(struct dm_integrity_c *ic, unsigned *sec_ptr) in wraparound_section() argument
484 if (unlikely(*sec_ptr >= ic->journal_sections)) in wraparound_section()
485 *sec_ptr -= ic->journal_sections; in wraparound_section()
488 static void sb_set_version(struct dm_integrity_c *ic) in sb_set_version() argument
490 if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) in sb_set_version()
491 ic->sb->version = SB_VERSION_5; in sb_set_version()
492 else if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) in sb_set_version()
493 ic->sb->version = SB_VERSION_4; in sb_set_version()
494 else if (ic->mode == 'B' || ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP)) in sb_set_version()
495 ic->sb->version = SB_VERSION_3; in sb_set_version()
496 else if (ic->meta_dev || ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) in sb_set_version()
497 ic->sb->version = SB_VERSION_2; in sb_set_version()
499 ic->sb->version = SB_VERSION_1; in sb_set_version()
502 static int sb_mac(struct dm_integrity_c *ic, bool wr) in sb_mac() argument
504 SHASH_DESC_ON_STACK(desc, ic->journal_mac); in sb_mac()
506 unsigned size = crypto_shash_digestsize(ic->journal_mac); in sb_mac()
509 dm_integrity_io_error(ic, "digest is too long", -EINVAL); in sb_mac()
513 desc->tfm = ic->journal_mac; in sb_mac()
517 dm_integrity_io_error(ic, "crypto_shash_init", r); in sb_mac()
521 r = crypto_shash_update(desc, (__u8 *)ic->sb, (1 << SECTOR_SHIFT) - size); in sb_mac()
523 dm_integrity_io_error(ic, "crypto_shash_update", r); in sb_mac()
528 r = crypto_shash_final(desc, (__u8 *)ic->sb + (1 << SECTOR_SHIFT) - size); in sb_mac()
530 dm_integrity_io_error(ic, "crypto_shash_final", r); in sb_mac()
537 dm_integrity_io_error(ic, "crypto_shash_final", r); in sb_mac()
540 if (memcmp((__u8 *)ic->sb + (1 << SECTOR_SHIFT) - size, result, size)) { in sb_mac()
541 dm_integrity_io_error(ic, "superblock mac", -EILSEQ); in sb_mac()
549 static int sync_rw_sb(struct dm_integrity_c *ic, int op, int op_flags) in sync_rw_sb() argument
558 io_req.mem.ptr.addr = ic->sb; in sync_rw_sb()
560 io_req.client = ic->io; in sync_rw_sb()
561 io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev; in sync_rw_sb()
562 io_loc.sector = ic->start; in sync_rw_sb()
566 sb_set_version(ic); in sync_rw_sb()
567 if (ic->journal_mac && ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) { in sync_rw_sb()
568 r = sb_mac(ic, true); in sync_rw_sb()
579 if (ic->mode != 'R' && ic->journal_mac && ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) { in sync_rw_sb()
580 r = sb_mac(ic, false); in sync_rw_sb()
594 static bool block_bitmap_op(struct dm_integrity_c *ic, struct page_list *bitmap, in block_bitmap_op() argument
600 if (unlikely(((sector | n_sectors) & ((1 << ic->sb->log2_sectors_per_block) - 1)) != 0)) { in block_bitmap_op()
604 ic->sb->log2_sectors_per_block, in block_bitmap_op()
605 ic->log2_blocks_per_bitmap_bit, in block_bitmap_op()
613 bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit); in block_bitmap_op()
615 (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit); in block_bitmap_op()
699 static void block_bitmap_copy(struct dm_integrity_c *ic, struct page_list *dst, struct page_list *s… in block_bitmap_copy() argument
701 unsigned n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE); in block_bitmap_copy()
711 static struct bitmap_block_status *sector_to_bitmap_block(struct dm_integrity_c *ic, sector_t secto… in sector_to_bitmap_block() argument
713 unsigned bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit); in sector_to_bitmap_block()
716 BUG_ON(bitmap_block >= ic->n_bitmap_blocks); in sector_to_bitmap_block()
717 return &ic->bbs[bitmap_block]; in sector_to_bitmap_block()
720 static void access_journal_check(struct dm_integrity_c *ic, unsigned section, unsigned offset, in access_journal_check() argument
724 unsigned limit = e ? ic->journal_section_entries : ic->journal_section_sectors; in access_journal_check()
726 if (unlikely(section >= ic->journal_sections) || in access_journal_check()
729 function, section, offset, ic->journal_sections, limit); in access_journal_check()
735 static void page_list_location(struct dm_integrity_c *ic, unsigned section, unsigned offset, in page_list_location() argument
740 access_journal_check(ic, section, offset, false, "page_list_location"); in page_list_location()
742 sector = section * ic->journal_section_sectors + offset; in page_list_location()
748 static struct journal_sector *access_page_list(struct dm_integrity_c *ic, struct page_list *pl, in access_page_list() argument
754 page_list_location(ic, section, offset, &pl_index, &pl_offset); in access_page_list()
764 static struct journal_sector *access_journal(struct dm_integrity_c *ic, unsigned section, unsigned … in access_journal() argument
766 return access_page_list(ic, ic->journal, section, offset, NULL); in access_journal()
769 static struct journal_entry *access_journal_entry(struct dm_integrity_c *ic, unsigned section, unsi… in access_journal_entry() argument
774 access_journal_check(ic, section, n, true, "access_journal_entry"); in access_journal_entry()
779 js = access_journal(ic, section, rel_sector); in access_journal_entry()
780 return (struct journal_entry *)((char *)js + offset * ic->journal_entry_size); in access_journal_entry()
783 static struct journal_sector *access_journal_data(struct dm_integrity_c *ic, unsigned section, unsi… in access_journal_data() argument
785 n <<= ic->sb->log2_sectors_per_block; in access_journal_data()
789 access_journal_check(ic, section, n, false, "access_journal_data"); in access_journal_data()
791 return access_journal(ic, section, n); in access_journal_data()
794 static void section_mac(struct dm_integrity_c *ic, unsigned section, __u8 result[JOURNAL_MAC_SIZE]) in section_mac() argument
796 SHASH_DESC_ON_STACK(desc, ic->journal_mac); in section_mac()
800 desc->tfm = ic->journal_mac; in section_mac()
804 dm_integrity_io_error(ic, "crypto_shash_init", r); in section_mac()
808 if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) { in section_mac()
811 r = crypto_shash_update(desc, (__u8 *)&ic->sb->salt, SALT_SIZE); in section_mac()
813 dm_integrity_io_error(ic, "crypto_shash_update", r); in section_mac()
820 dm_integrity_io_error(ic, "crypto_shash_update", r); in section_mac()
825 for (j = 0; j < ic->journal_section_entries; j++) { in section_mac()
826 struct journal_entry *je = access_journal_entry(ic, section, j); in section_mac()
829 dm_integrity_io_error(ic, "crypto_shash_update", r); in section_mac()
834 size = crypto_shash_digestsize(ic->journal_mac); in section_mac()
839 dm_integrity_io_error(ic, "crypto_shash_final", r); in section_mac()
847 dm_integrity_io_error(ic, "digest_size", -EINVAL); in section_mac()
852 dm_integrity_io_error(ic, "crypto_shash_final", r); in section_mac()
863 static void rw_section_mac(struct dm_integrity_c *ic, unsigned section, bool wr) in rw_section_mac() argument
868 if (!ic->journal_mac) in rw_section_mac()
871 section_mac(ic, section, result); in rw_section_mac()
874 struct journal_sector *js = access_journal(ic, section, j); in rw_section_mac()
880 dm_integrity_io_error(ic, "journal mac", -EILSEQ); in rw_section_mac()
893 static void xor_journal(struct dm_integrity_c *ic, bool encrypt, unsigned section, in xor_journal() argument
897 size_t n_bytes = (size_t)(n_sections * ic->journal_section_sectors) << SECTOR_SHIFT; in xor_journal()
902 source_pl = ic->journal; in xor_journal()
903 target_pl = ic->journal_io; in xor_journal()
905 source_pl = ic->journal_io; in xor_journal()
906 target_pl = ic->journal; in xor_journal()
909 page_list_location(ic, section, 0, &pl_index, &pl_offset); in xor_journal()
925 rw_section_mac(ic, section, true); in xor_journal()
930 page_list_location(ic, section, 0, §ion_index, &dummy); in xor_journal()
936 src_pages[1] = ic->journal_xor[pl_index].page; in xor_journal()
955 complete(&comp->ic->crypto_backoff); in complete_journal_encrypt()
958 dm_integrity_io_error(comp->ic, "asynchronous encrypt", err); in complete_journal_encrypt()
977 wait_for_completion(&comp->ic->crypto_backoff); in do_crypt()
978 reinit_completion(&comp->ic->crypto_backoff); in do_crypt()
981 dm_integrity_io_error(comp->ic, "encrypt", r); in do_crypt()
985 static void crypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned section, in crypt_journal() argument
994 source_sg = ic->journal_scatterlist; in crypt_journal()
995 target_sg = ic->journal_io_scatterlist; in crypt_journal()
997 source_sg = ic->journal_io_scatterlist; in crypt_journal()
998 target_sg = ic->journal_scatterlist; in crypt_journal()
1007 rw_section_mac(ic, section, true); in crypt_journal()
1009 req = ic->sk_requests[section]; in crypt_journal()
1010 ivsize = crypto_skcipher_ivsize(ic->journal_crypt); in crypt_journal()
1029 static void encrypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned section, in encrypt_journal() argument
1032 if (ic->journal_xor) in encrypt_journal()
1033 return xor_journal(ic, encrypt, section, n_sections, comp); in encrypt_journal()
1035 return crypt_journal(ic, encrypt, section, n_sections, comp); in encrypt_journal()
1042 dm_integrity_io_error(comp->ic, "writing journal", -EIO); in complete_journal_io()
1046 static void rw_journal_sectors(struct dm_integrity_c *ic, int op, int op_flags, in rw_journal_sectors() argument
1054 if (unlikely(dm_integrity_failed(ic))) { in rw_journal_sectors()
1066 if (ic->journal_io) in rw_journal_sectors()
1067 io_req.mem.ptr.pl = &ic->journal_io[pl_index]; in rw_journal_sectors()
1069 io_req.mem.ptr.pl = &ic->journal[pl_index]; in rw_journal_sectors()
1077 io_req.client = ic->io; in rw_journal_sectors()
1078 io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev; in rw_journal_sectors()
1079 io_loc.sector = ic->start + SB_SECTORS + sector; in rw_journal_sectors()
1084 dm_integrity_io_error(ic, op == REQ_OP_READ ? "reading journal" : "writing journal", r); in rw_journal_sectors()
1092 static void rw_journal(struct dm_integrity_c *ic, int op, int op_flags, unsigned section, in rw_journal() argument
1097 sector = section * ic->journal_section_sectors; in rw_journal()
1098 n_sectors = n_sections * ic->journal_section_sectors; in rw_journal()
1100 rw_journal_sectors(ic, op, op_flags, sector, n_sectors, comp); in rw_journal()
1103 static void write_journal(struct dm_integrity_c *ic, unsigned commit_start, unsigned commit_section… in write_journal() argument
1110 io_comp.ic = ic; in write_journal()
1113 if (commit_start + commit_sections <= ic->journal_sections) { in write_journal()
1115 if (ic->journal_io) { in write_journal()
1116 crypt_comp_1.ic = ic; in write_journal()
1119 encrypt_journal(ic, true, commit_start, commit_sections, &crypt_comp_1); in write_journal()
1123 rw_section_mac(ic, commit_start + i, true); in write_journal()
1125 rw_journal(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, commit_start, in write_journal()
1130 to_end = ic->journal_sections - commit_start; in write_journal()
1131 if (ic->journal_io) { in write_journal()
1132 crypt_comp_1.ic = ic; in write_journal()
1135 encrypt_journal(ic, true, commit_start, to_end, &crypt_comp_1); in write_journal()
1137 rw_journal(ic, REQ_OP_WRITE, REQ_FUA, commit_start, to_end, &io_comp); in write_journal()
1140 encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_1); in write_journal()
1143 crypt_comp_2.ic = ic; in write_journal()
1146 encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_2); in write_journal()
1148 rw_journal(ic, REQ_OP_WRITE, REQ_FUA, commit_start, to_end, &io_comp); in write_journal()
1153 rw_section_mac(ic, commit_start + i, true); in write_journal()
1154 rw_journal(ic, REQ_OP_WRITE, REQ_FUA, commit_start, to_end, &io_comp); in write_journal()
1156 rw_section_mac(ic, i, true); in write_journal()
1158 rw_journal(ic, REQ_OP_WRITE, REQ_FUA, 0, commit_sections - to_end, &io_comp); in write_journal()
1164 static void copy_from_journal(struct dm_integrity_c *ic, unsigned section, unsigned offset, in copy_from_journal() argument
1172 BUG_ON((target | n_sectors | offset) & (unsigned)(ic->sectors_per_block - 1)); in copy_from_journal()
1174 if (unlikely(dm_integrity_failed(ic))) { in copy_from_journal()
1179 sector = section * ic->journal_section_sectors + JOURNAL_BLOCK_SECTORS + offset; in copy_from_journal()
1187 io_req.mem.ptr.pl = &ic->journal[pl_index]; in copy_from_journal()
1191 io_req.client = ic->io; in copy_from_journal()
1192 io_loc.bdev = ic->dev->bdev; in copy_from_journal()
1209 static bool add_new_range(struct dm_integrity_c *ic, struct dm_integrity_range *new_range, bool che… in add_new_range() argument
1211 struct rb_node **n = &ic->in_progress.rb_node; in add_new_range()
1214 BUG_ON((new_range->logical_sector | new_range->n_sectors) & (unsigned)(ic->sectors_per_block - 1)); in add_new_range()
1218 list_for_each_entry(range, &ic->wait_list, wait_entry) { in add_new_range()
1240 rb_insert_color(&new_range->node, &ic->in_progress); in add_new_range()
1245 static void remove_range_unlocked(struct dm_integrity_c *ic, struct dm_integrity_range *range) in remove_range_unlocked() argument
1247 rb_erase(&range->node, &ic->in_progress); in remove_range_unlocked()
1248 while (unlikely(!list_empty(&ic->wait_list))) { in remove_range_unlocked()
1250 list_first_entry(&ic->wait_list, struct dm_integrity_range, wait_entry); in remove_range_unlocked()
1254 if (!add_new_range(ic, last_range, false)) { in remove_range_unlocked()
1256 list_add(&last_range->wait_entry, &ic->wait_list); in remove_range_unlocked()
1264 static void remove_range(struct dm_integrity_c *ic, struct dm_integrity_range *range) in remove_range() argument
1268 spin_lock_irqsave(&ic->endio_wait.lock, flags); in remove_range()
1269 remove_range_unlocked(ic, range); in remove_range()
1270 spin_unlock_irqrestore(&ic->endio_wait.lock, flags); in remove_range()
1273 static void wait_and_add_new_range(struct dm_integrity_c *ic, struct dm_integrity_range *new_range) in wait_and_add_new_range() argument
1276 list_add_tail(&new_range->wait_entry, &ic->wait_list); in wait_and_add_new_range()
1280 spin_unlock_irq(&ic->endio_wait.lock); in wait_and_add_new_range()
1282 spin_lock_irq(&ic->endio_wait.lock); in wait_and_add_new_range()
1286 static void add_new_range_and_wait(struct dm_integrity_c *ic, struct dm_integrity_range *new_range) in add_new_range_and_wait() argument
1288 if (unlikely(!add_new_range(ic, new_range, true))) in add_new_range_and_wait()
1289 wait_and_add_new_range(ic, new_range); in add_new_range_and_wait()
1298 static void add_journal_node(struct dm_integrity_c *ic, struct journal_node *node, sector_t sector) in add_journal_node() argument
1306 link = &ic->journal_tree_root.rb_node; in add_journal_node()
1320 rb_insert_color(&node->node, &ic->journal_tree_root); in add_journal_node()
1323 static void remove_journal_node(struct dm_integrity_c *ic, struct journal_node *node) in remove_journal_node() argument
1326 rb_erase(&node->node, &ic->journal_tree_root); in remove_journal_node()
1332 static unsigned find_journal_node(struct dm_integrity_c *ic, sector_t sector, sector_t *next_sector) in find_journal_node() argument
1334 struct rb_node *n = ic->journal_tree_root.rb_node; in find_journal_node()
1340 found = j - ic->journal_tree; in find_journal_node()
1353 static bool test_journal_node(struct dm_integrity_c *ic, unsigned pos, sector_t sector) in test_journal_node() argument
1358 if (unlikely(pos >= ic->journal_entries)) in test_journal_node()
1360 node = &ic->journal_tree[pos]; in test_journal_node()
1374 static bool find_newer_committed_node(struct dm_integrity_c *ic, struct journal_node *node) in find_newer_committed_node() argument
1391 next_section = (unsigned)(next_node - ic->journal_tree) / ic->journal_section_entries; in find_newer_committed_node()
1392 if (next_section >= ic->committed_section && in find_newer_committed_node()
1393 next_section < ic->committed_section + ic->n_committed_sections) in find_newer_committed_node()
1395 if (next_section + ic->journal_sections < ic->committed_section + ic->n_committed_sections) in find_newer_committed_node()
1405 static int dm_integrity_rw_tag(struct dm_integrity_c *ic, unsigned char *tag, sector_t *metadata_bl… in dm_integrity_rw_tag() argument
1411 unsigned may_be = MAY_BE_HASH | (ic->discard ? MAY_BE_FILLER : 0); in dm_integrity_rw_tag()
1419 r = dm_integrity_failed(ic); in dm_integrity_rw_tag()
1423 data = dm_bufio_read(ic->bufio, *metadata_block, &b); in dm_integrity_rw_tag()
1427 to_copy = min((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - *metadata_offset, total_size); in dm_integrity_rw_tag()
1439 if (likely(is_power_of_2(ic->tag_size))) { in dm_integrity_rw_tag()
1441 if (unlikely(!ic->discard) || in dm_integrity_rw_tag()
1456 if (unlikely(hash_offset == ic->tag_size)) { in dm_integrity_rw_tag()
1462 may_be = MAY_BE_HASH | (ic->discard ? MAY_BE_FILLER : 0); in dm_integrity_rw_tag()
1471 if (unlikely(*metadata_offset == 1U << SECTOR_SHIFT << ic->log2_buffer_sectors)) { in dm_integrity_rw_tag()
1476 if (unlikely(!is_power_of_2(ic->tag_size))) { in dm_integrity_rw_tag()
1477 hash_offset = (hash_offset + to_copy) % ic->tag_size; in dm_integrity_rw_tag()
1491 struct dm_integrity_c *ic; member
1499 dm_integrity_io_error(fr->ic, "flushing disk cache", -EIO); in flush_notify()
1503 static void dm_integrity_flush_buffers(struct dm_integrity_c *ic, bool flush_data) in dm_integrity_flush_buffers() argument
1509 if (!ic->meta_dev) in dm_integrity_flush_buffers()
1518 fr.io_req.client = dm_bufio_get_dm_io_client(ic->bufio), in dm_integrity_flush_buffers()
1519 fr.io_reg.bdev = ic->dev->bdev, in dm_integrity_flush_buffers()
1522 fr.ic = ic; in dm_integrity_flush_buffers()
1528 r = dm_bufio_write_dirty_buffers(ic->bufio); in dm_integrity_flush_buffers()
1530 dm_integrity_io_error(ic, "writing tags", r); in dm_integrity_flush_buffers()
1536 static void sleep_on_endio_wait(struct dm_integrity_c *ic) in sleep_on_endio_wait() argument
1539 __add_wait_queue(&ic->endio_wait, &wait); in sleep_on_endio_wait()
1541 spin_unlock_irq(&ic->endio_wait.lock); in sleep_on_endio_wait()
1543 spin_lock_irq(&ic->endio_wait.lock); in sleep_on_endio_wait()
1544 __remove_wait_queue(&ic->endio_wait, &wait); in sleep_on_endio_wait()
1549 struct dm_integrity_c *ic = from_timer(ic, t, autocommit_timer); in autocommit_fn() local
1551 if (likely(!dm_integrity_failed(ic))) in autocommit_fn()
1552 queue_work(ic->commit_wq, &ic->commit_work); in autocommit_fn()
1555 static void schedule_autocommit(struct dm_integrity_c *ic) in schedule_autocommit() argument
1557 if (!timer_pending(&ic->autocommit_timer)) in schedule_autocommit()
1558 mod_timer(&ic->autocommit_timer, jiffies + ic->autocommit_jiffies); in schedule_autocommit()
1561 static void submit_flush_bio(struct dm_integrity_c *ic, struct dm_integrity_io *dio) in submit_flush_bio() argument
1566 spin_lock_irqsave(&ic->endio_wait.lock, flags); in submit_flush_bio()
1568 bio_list_add(&ic->flush_bio_list, bio); in submit_flush_bio()
1569 spin_unlock_irqrestore(&ic->endio_wait.lock, flags); in submit_flush_bio()
1571 queue_work(ic->commit_wq, &ic->commit_work); in submit_flush_bio()
1574 static void do_endio(struct dm_integrity_c *ic, struct bio *bio) in do_endio() argument
1576 int r = dm_integrity_failed(ic); in do_endio()
1579 if (unlikely(ic->synchronous_mode) && bio_op(bio) == REQ_OP_WRITE) { in do_endio()
1581 spin_lock_irqsave(&ic->endio_wait.lock, flags); in do_endio()
1582 bio_list_add(&ic->synchronous_bios, bio); in do_endio()
1583 queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0); in do_endio()
1584 spin_unlock_irqrestore(&ic->endio_wait.lock, flags); in do_endio()
1590 static void do_endio_flush(struct dm_integrity_c *ic, struct dm_integrity_io *dio) in do_endio_flush() argument
1594 if (unlikely(dio->fua) && likely(!bio->bi_status) && likely(!dm_integrity_failed(ic))) in do_endio_flush()
1595 submit_flush_bio(ic, dio); in do_endio_flush()
1597 do_endio(ic, bio); in do_endio_flush()
1603 struct dm_integrity_c *ic = dio->ic; in dec_in_flight() local
1606 remove_range(ic, &dio->range); in dec_in_flight()
1609 schedule_autocommit(ic); in dec_in_flight()
1619 queue_work(ic->offload_wq, &dio->work); in dec_in_flight()
1622 do_endio_flush(ic, dio); in dec_in_flight()
1640 static void integrity_sector_checksum(struct dm_integrity_c *ic, sector_t sector, in integrity_sector_checksum() argument
1644 SHASH_DESC_ON_STACK(req, ic->internal_hash); in integrity_sector_checksum()
1648 req->tfm = ic->internal_hash; in integrity_sector_checksum()
1652 dm_integrity_io_error(ic, "crypto_shash_init", r); in integrity_sector_checksum()
1656 if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) { in integrity_sector_checksum()
1657 r = crypto_shash_update(req, (__u8 *)&ic->sb->salt, SALT_SIZE); in integrity_sector_checksum()
1659 dm_integrity_io_error(ic, "crypto_shash_update", r); in integrity_sector_checksum()
1666 dm_integrity_io_error(ic, "crypto_shash_update", r); in integrity_sector_checksum()
1670 r = crypto_shash_update(req, data, ic->sectors_per_block << SECTOR_SHIFT); in integrity_sector_checksum()
1672 dm_integrity_io_error(ic, "crypto_shash_update", r); in integrity_sector_checksum()
1678 dm_integrity_io_error(ic, "crypto_shash_final", r); in integrity_sector_checksum()
1682 digest_size = crypto_shash_digestsize(ic->internal_hash); in integrity_sector_checksum()
1683 if (unlikely(digest_size < ic->tag_size)) in integrity_sector_checksum()
1684 memset(result + digest_size, 0, ic->tag_size - digest_size); in integrity_sector_checksum()
1690 get_random_bytes(result, ic->tag_size); in integrity_sector_checksum()
1696 struct dm_integrity_c *ic = dio->ic; in integrity_metadata() local
1700 if (ic->internal_hash) { in integrity_metadata()
1703 unsigned digest_size = crypto_shash_digestsize(ic->internal_hash); in integrity_metadata()
1706 unsigned extra_space = unlikely(digest_size > ic->tag_size) ? digest_size - ic->tag_size : 0; in integrity_metadata()
1711 if (unlikely(ic->mode == 'R')) in integrity_metadata()
1715 …checksums = kmalloc((PAGE_SIZE >> SECTOR_SHIFT >> ic->sb->log2_sectors_per_block) * ic->tag_size +… in integrity_metadata()
1732 unsigned max_blocks = max_size / ic->tag_size; in integrity_metadata()
1736 unsigned this_step_blocks = bi_size >> (SECTOR_SHIFT + ic->sb->log2_sectors_per_block); in integrity_metadata()
1738 r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset, in integrity_metadata()
1739 this_step_blocks * ic->tag_size, TAG_WRITE); in integrity_metadata()
1746 /*if (bi_size < this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block)) { in integrity_metadata()
1751 bi_size -= this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block); in integrity_metadata()
1752 bi_sector += this_step_blocks << ic->sb->log2_sectors_per_block; in integrity_metadata()
1772 integrity_sector_checksum(ic, sector, mem + pos, checksums_ptr); in integrity_metadata()
1773 checksums_ptr += ic->tag_size; in integrity_metadata()
1774 sectors_to_process -= ic->sectors_per_block; in integrity_metadata()
1775 pos += ic->sectors_per_block << SECTOR_SHIFT; in integrity_metadata()
1776 sector += ic->sectors_per_block; in integrity_metadata()
1780 r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset, in integrity_metadata()
1786 (sector - ((r + ic->tag_size - 1) / ic->tag_size))); in integrity_metadata()
1788 atomic64_inc(&ic->number_of_mismatches); in integrity_metadata()
1814 sector_to_block(ic, data_to_process); in integrity_metadata()
1815 data_to_process *= ic->tag_size; in integrity_metadata()
1824 r = dm_integrity_rw_tag(ic, tag, &dio->metadata_block, &dio->metadata_offset, in integrity_metadata()
1844 struct dm_integrity_c *ic = ti->private; in dm_integrity_map() local
1850 dio->ic = ic; in dm_integrity_map()
1868 submit_flush_bio(ic, dio); in dm_integrity_map()
1881 if (unlikely(dio->range.logical_sector + bio_sectors(bio) > ic->provided_data_sectors)) { in dm_integrity_map()
1884 ic->provided_data_sectors); in dm_integrity_map()
1887 …if (unlikely((dio->range.logical_sector | bio_sectors(bio)) & (unsigned)(ic->sectors_per_block - 1… in dm_integrity_map()
1889 ic->sectors_per_block, in dm_integrity_map()
1894 if (ic->sectors_per_block > 1 && likely(dio->op != REQ_OP_DISCARD)) { in dm_integrity_map()
1898 if (unlikely(bv.bv_len & ((ic->sectors_per_block << SECTOR_SHIFT) - 1))) { in dm_integrity_map()
1900 bv.bv_offset, bv.bv_len, ic->sectors_per_block); in dm_integrity_map()
1907 if (!ic->internal_hash) { in dm_integrity_map()
1909 unsigned wanted_tag_size = bio_sectors(bio) >> ic->sb->log2_sectors_per_block; in dm_integrity_map()
1910 if (ic->log2_tag_size >= 0) in dm_integrity_map()
1911 wanted_tag_size <<= ic->log2_tag_size; in dm_integrity_map()
1913 wanted_tag_size *= ic->tag_size; in dm_integrity_map()
1927 if (unlikely(ic->mode == 'R') && unlikely(dio->op != REQ_OP_READ)) in dm_integrity_map()
1930 get_area_and_offset(ic, dio->range.logical_sector, &area, &offset); in dm_integrity_map()
1931 dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset); in dm_integrity_map()
1932 bio->bi_iter.bi_sector = get_data_sector(ic, area, offset); in dm_integrity_map()
1941 struct dm_integrity_c *ic = dio->ic; in __journal_read_write() local
1961 struct journal_entry *je = access_journal_entry(ic, journal_section, journal_entry); in __journal_read_write()
1972 __io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je)); in __journal_read_write()
1977 js = access_journal_data(ic, journal_section, journal_entry); in __journal_read_write()
1985 } while (++s < ic->sectors_per_block); in __journal_read_write()
1987 if (ic->internal_hash) { in __journal_read_write()
1990 integrity_sector_checksum(ic, logical_sector, mem + bv.bv_offset, checksums_onstack); in __journal_read_write()
1991 if (unlikely(memcmp(checksums_onstack, journal_entry_tag(ic, je), ic->tag_size))) { in __journal_read_write()
1999 if (!ic->internal_hash) { in __journal_read_write()
2001 unsigned tag_todo = ic->tag_size; in __journal_read_write()
2002 char *tag_ptr = journal_entry_tag(ic, je); in __journal_read_write()
2027 js = access_journal_data(ic, journal_section, journal_entry); in __journal_read_write()
2028 memcpy(js, mem + bv.bv_offset, ic->sectors_per_block << SECTOR_SHIFT); in __journal_read_write()
2033 } while (++s < ic->sectors_per_block); in __journal_read_write()
2035 if (ic->internal_hash) { in __journal_read_write()
2036 unsigned digest_size = crypto_shash_digestsize(ic->internal_hash); in __journal_read_write()
2037 if (unlikely(digest_size > ic->tag_size)) { in __journal_read_write()
2039 integrity_sector_checksum(ic, logical_sector, (char *)js, checksums_onstack); in __journal_read_write()
2040 memcpy(journal_entry_tag(ic, je), checksums_onstack, ic->tag_size); in __journal_read_write()
2042 integrity_sector_checksum(ic, logical_sector, (char *)js, journal_entry_tag(ic, je)); in __journal_read_write()
2047 logical_sector += ic->sectors_per_block; in __journal_read_write()
2050 if (unlikely(journal_entry == ic->journal_section_entries)) { in __journal_read_write()
2053 wraparound_section(ic, &journal_section); in __journal_read_write()
2056 bv.bv_offset += ic->sectors_per_block << SECTOR_SHIFT; in __journal_read_write()
2057 } while (bv.bv_len -= ic->sectors_per_block << SECTOR_SHIFT); in __journal_read_write()
2066 if (unlikely(waitqueue_active(&ic->copy_to_journal_wait))) in __journal_read_write()
2067 wake_up(&ic->copy_to_journal_wait); in __journal_read_write()
2068 if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold) { in __journal_read_write()
2069 queue_work(ic->commit_wq, &ic->commit_work); in __journal_read_write()
2071 schedule_autocommit(ic); in __journal_read_write()
2074 remove_range(ic, &dio->range); in __journal_read_write()
2081 get_area_and_offset(ic, dio->range.logical_sector, &area, &offset); in __journal_read_write()
2082 dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset); in __journal_read_write()
2091 struct dm_integrity_c *ic = dio->ic; in dm_integrity_map_continue() local
2097 bool need_sync_io = ic->internal_hash && dio->op == REQ_OP_READ; in dm_integrity_map_continue()
2098 if (unlikely(dio->op == REQ_OP_DISCARD) && ic->mode != 'D') in dm_integrity_map_continue()
2103 queue_work(ic->offload_wq, &dio->work); in dm_integrity_map_continue()
2108 spin_lock_irq(&ic->endio_wait.lock); in dm_integrity_map_continue()
2110 if (unlikely(dm_integrity_failed(ic))) { in dm_integrity_map_continue()
2111 spin_unlock_irq(&ic->endio_wait.lock); in dm_integrity_map_continue()
2112 do_endio(ic, bio); in dm_integrity_map_continue()
2117 if (ic->mode == 'J' && likely(dio->op != REQ_OP_DISCARD)) { in dm_integrity_map_continue()
2123 (sector_t)ic->free_sectors << ic->sb->log2_sectors_per_block); in dm_integrity_map_continue()
2127 sleep_on_endio_wait(ic); in dm_integrity_map_continue()
2130 range_sectors = dio->range.n_sectors >> ic->sb->log2_sectors_per_block; in dm_integrity_map_continue()
2131 ic->free_sectors -= range_sectors; in dm_integrity_map_continue()
2132 journal_section = ic->free_section; in dm_integrity_map_continue()
2133 journal_entry = ic->free_section_entry; in dm_integrity_map_continue()
2135 next_entry = ic->free_section_entry + range_sectors; in dm_integrity_map_continue()
2136 ic->free_section_entry = next_entry % ic->journal_section_entries; in dm_integrity_map_continue()
2137 ic->free_section += next_entry / ic->journal_section_entries; in dm_integrity_map_continue()
2138 ic->n_uncommitted_sections += next_entry / ic->journal_section_entries; in dm_integrity_map_continue()
2139 wraparound_section(ic, &ic->free_section); in dm_integrity_map_continue()
2141 pos = journal_section * ic->journal_section_entries + journal_entry; in dm_integrity_map_continue()
2148 add_journal_node(ic, &ic->journal_tree[pos], dio->range.logical_sector + i); in dm_integrity_map_continue()
2150 if (unlikely(pos >= ic->journal_entries)) in dm_integrity_map_continue()
2153 je = access_journal_entry(ic, ws, we); in dm_integrity_map_continue()
2157 if (unlikely(we == ic->journal_section_entries)) { in dm_integrity_map_continue()
2160 wraparound_section(ic, &ws); in dm_integrity_map_continue()
2162 } while ((i += ic->sectors_per_block) < dio->range.n_sectors); in dm_integrity_map_continue()
2164 spin_unlock_irq(&ic->endio_wait.lock); in dm_integrity_map_continue()
2168 journal_read_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector); in dm_integrity_map_continue()
2175 for (i = ic->sectors_per_block; i < dio->range.n_sectors; i += ic->sectors_per_block, jp++) { in dm_integrity_map_continue()
2176 if (!test_journal_node(ic, jp, dio->range.logical_sector + i)) in dm_integrity_map_continue()
2183 if (unlikely(!add_new_range(ic, &dio->range, true))) { in dm_integrity_map_continue()
2191 spin_unlock_irq(&ic->endio_wait.lock); in dm_integrity_map_continue()
2193 queue_work(ic->wait_wq, &dio->work); in dm_integrity_map_continue()
2197 dio->range.n_sectors = ic->sectors_per_block; in dm_integrity_map_continue()
2198 wait_and_add_new_range(ic, &dio->range); in dm_integrity_map_continue()
2206 unsigned new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector); in dm_integrity_map_continue()
2208 remove_range_unlocked(ic, &dio->range); in dm_integrity_map_continue()
2213 if (ic->mode == 'J' && likely(dio->op == REQ_OP_DISCARD) && !discard_retried) { in dm_integrity_map_continue()
2215 unsigned new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector); in dm_integrity_map_continue()
2218 remove_range_unlocked(ic, &dio->range); in dm_integrity_map_continue()
2219 spin_unlock_irq(&ic->endio_wait.lock); in dm_integrity_map_continue()
2220 queue_work(ic->commit_wq, &ic->commit_work); in dm_integrity_map_continue()
2221 flush_workqueue(ic->commit_wq); in dm_integrity_map_continue()
2222 queue_work(ic->writer_wq, &ic->writer_work); in dm_integrity_map_continue()
2223 flush_workqueue(ic->writer_wq); in dm_integrity_map_continue()
2228 spin_unlock_irq(&ic->endio_wait.lock); in dm_integrity_map_continue()
2231 journal_section = journal_read_pos / ic->journal_section_entries; in dm_integrity_map_continue()
2232 journal_entry = journal_read_pos % ic->journal_section_entries; in dm_integrity_map_continue()
2236 if (ic->mode == 'B' && (dio->op == REQ_OP_WRITE || unlikely(dio->op == REQ_OP_DISCARD))) { in dm_integrity_map_continue()
2237 if (!block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector, in dm_integrity_map_continue()
2241 bbs = sector_to_bitmap_block(ic, dio->range.logical_sector); in dm_integrity_map_continue()
2245 queue_work(ic->writer_wq, &bbs->work); in dm_integrity_map_continue()
2259 bio_set_dev(bio, ic->dev->bdev); in dm_integrity_map_continue()
2265 if (unlikely(dio->op == REQ_OP_DISCARD) && likely(ic->mode != 'D')) { in dm_integrity_map_continue()
2267 dm_integrity_flush_buffers(ic, false); in dm_integrity_map_continue()
2281 if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) && in dm_integrity_map_continue()
2282 dio->range.logical_sector + dio->range.n_sectors > le64_to_cpu(ic->sb->recalc_sector)) in dm_integrity_map_continue()
2284 if (ic->mode == 'B') { in dm_integrity_map_continue()
2285 if (!block_bitmap_op(ic, ic->recalc_bitmap, dio->range.logical_sector, in dm_integrity_map_continue()
2298 queue_work(ic->metadata_wq, &dio->work); in dm_integrity_map_continue()
2307 do_endio_flush(ic, dio); in dm_integrity_map_continue()
2318 static void pad_uncommitted(struct dm_integrity_c *ic) in pad_uncommitted() argument
2320 if (ic->free_section_entry) { in pad_uncommitted()
2321 ic->free_sectors -= ic->journal_section_entries - ic->free_section_entry; in pad_uncommitted()
2322 ic->free_section_entry = 0; in pad_uncommitted()
2323 ic->free_section++; in pad_uncommitted()
2324 wraparound_section(ic, &ic->free_section); in pad_uncommitted()
2325 ic->n_uncommitted_sections++; in pad_uncommitted()
2327 if (WARN_ON(ic->journal_sections * ic->journal_section_entries != in pad_uncommitted()
2328 (ic->n_uncommitted_sections + ic->n_committed_sections) * in pad_uncommitted()
2329 ic->journal_section_entries + ic->free_sectors)) { in pad_uncommitted()
2333 ic->journal_sections, ic->journal_section_entries, in pad_uncommitted()
2334 ic->n_uncommitted_sections, ic->n_committed_sections, in pad_uncommitted()
2335 ic->journal_section_entries, ic->free_sectors); in pad_uncommitted()
2341 struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, commit_work); in integrity_commit() local
2346 del_timer(&ic->autocommit_timer); in integrity_commit()
2348 spin_lock_irq(&ic->endio_wait.lock); in integrity_commit()
2349 flushes = bio_list_get(&ic->flush_bio_list); in integrity_commit()
2350 if (unlikely(ic->mode != 'J')) { in integrity_commit()
2351 spin_unlock_irq(&ic->endio_wait.lock); in integrity_commit()
2352 dm_integrity_flush_buffers(ic, true); in integrity_commit()
2356 pad_uncommitted(ic); in integrity_commit()
2357 commit_start = ic->uncommitted_section; in integrity_commit()
2358 commit_sections = ic->n_uncommitted_sections; in integrity_commit()
2359 spin_unlock_irq(&ic->endio_wait.lock); in integrity_commit()
2366 for (j = 0; j < ic->journal_section_entries; j++) { in integrity_commit()
2368 je = access_journal_entry(ic, i, j); in integrity_commit()
2369 io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je)); in integrity_commit()
2371 for (j = 0; j < ic->journal_section_sectors; j++) { in integrity_commit()
2373 js = access_journal(ic, i, j); in integrity_commit()
2374 js->commit_id = dm_integrity_commit_id(ic, i, j, ic->commit_seq); in integrity_commit()
2377 if (unlikely(i >= ic->journal_sections)) in integrity_commit()
2378 ic->commit_seq = next_commit_seq(ic->commit_seq); in integrity_commit()
2379 wraparound_section(ic, &i); in integrity_commit()
2383 write_journal(ic, commit_start, commit_sections); in integrity_commit()
2385 spin_lock_irq(&ic->endio_wait.lock); in integrity_commit()
2386 ic->uncommitted_section += commit_sections; in integrity_commit()
2387 wraparound_section(ic, &ic->uncommitted_section); in integrity_commit()
2388 ic->n_uncommitted_sections -= commit_sections; in integrity_commit()
2389 ic->n_committed_sections += commit_sections; in integrity_commit()
2390 spin_unlock_irq(&ic->endio_wait.lock); in integrity_commit()
2392 if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold) in integrity_commit()
2393 queue_work(ic->writer_wq, &ic->writer_work); in integrity_commit()
2399 do_endio(ic, flushes); in integrity_commit()
2408 struct dm_integrity_c *ic = comp->ic; in complete_copy_from_journal() local
2409 remove_range(ic, &io->range); in complete_copy_from_journal()
2410 mempool_free(io, &ic->journal_io_mempool); in complete_copy_from_journal()
2412 dm_integrity_io_error(ic, "copying from journal", -EIO); in complete_copy_from_journal()
2416 static void restore_last_bytes(struct dm_integrity_c *ic, struct journal_sector *js, in restore_last_bytes() argument
2423 } while (++s < ic->sectors_per_block); in restore_last_bytes()
2426 static void do_journal_write(struct dm_integrity_c *ic, unsigned write_start, in do_journal_write() argument
2435 comp.ic = ic; in do_journal_write()
2440 for (n = 0; n < write_sections; n++, i++, wraparound_section(ic, &i)) { in do_journal_write()
2444 rw_section_mac(ic, i, false); in do_journal_write()
2445 for (j = 0; j < ic->journal_section_entries; j++) { in do_journal_write()
2446 struct journal_entry *je = access_journal_entry(ic, i, j); in do_journal_write()
2458 if (unlikely(sec & (unsigned)(ic->sectors_per_block - 1))) { in do_journal_write()
2459 dm_integrity_io_error(ic, "invalid sector in journal", -EIO); in do_journal_write()
2460 sec &= ~(sector_t)(ic->sectors_per_block - 1); in do_journal_write()
2463 if (unlikely(sec >= ic->provided_data_sectors)) in do_journal_write()
2465 get_area_and_offset(ic, sec, &area, &offset); in do_journal_write()
2466 restore_last_bytes(ic, access_journal_data(ic, i, j), je); in do_journal_write()
2467 for (k = j + 1; k < ic->journal_section_entries; k++) { in do_journal_write()
2468 struct journal_entry *je2 = access_journal_entry(ic, i, k); in do_journal_write()
2474 if (unlikely(sec2 >= ic->provided_data_sectors)) in do_journal_write()
2476 get_area_and_offset(ic, sec2, &area2, &offset2); in do_journal_write()
2477 if (area2 != area || offset2 != offset + ((k - j) << ic->sb->log2_sectors_per_block)) in do_journal_write()
2479 restore_last_bytes(ic, access_journal_data(ic, i, k), je2); in do_journal_write()
2483 io = mempool_alloc(&ic->journal_io_mempool, GFP_NOIO); in do_journal_write()
2486 io->range.n_sectors = (k - j) << ic->sb->log2_sectors_per_block; in do_journal_write()
2488 spin_lock_irq(&ic->endio_wait.lock); in do_journal_write()
2489 add_new_range_and_wait(ic, &io->range); in do_journal_write()
2492 struct journal_node *section_node = &ic->journal_tree[i * ic->journal_section_entries]; in do_journal_write()
2495 while (j < k && find_newer_committed_node(ic, §ion_node[j])) { in do_journal_write()
2496 struct journal_entry *je2 = access_journal_entry(ic, i, j); in do_journal_write()
2499 remove_journal_node(ic, §ion_node[j]); in do_journal_write()
2501 sec += ic->sectors_per_block; in do_journal_write()
2502 offset += ic->sectors_per_block; in do_journal_write()
2504 while (j < k && find_newer_committed_node(ic, §ion_node[k - 1])) { in do_journal_write()
2505 struct journal_entry *je2 = access_journal_entry(ic, i, k - 1); in do_journal_write()
2508 remove_journal_node(ic, §ion_node[k - 1]); in do_journal_write()
2512 remove_range_unlocked(ic, &io->range); in do_journal_write()
2513 spin_unlock_irq(&ic->endio_wait.lock); in do_journal_write()
2514 mempool_free(io, &ic->journal_io_mempool); in do_journal_write()
2518 remove_journal_node(ic, §ion_node[l]); in do_journal_write()
2521 spin_unlock_irq(&ic->endio_wait.lock); in do_journal_write()
2523 metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset); in do_journal_write()
2526 struct journal_entry *je2 = access_journal_entry(ic, i, l); in do_journal_write()
2532 ic->internal_hash) { in do_journal_write()
2535 integrity_sector_checksum(ic, sec + ((l - j) << ic->sb->log2_sectors_per_block), in do_journal_write()
2536 (char *)access_journal_data(ic, i, l), test_tag); in do_journal_write()
2537 if (unlikely(memcmp(test_tag, journal_entry_tag(ic, je2), ic->tag_size))) in do_journal_write()
2538 dm_integrity_io_error(ic, "tag mismatch when replaying journal", -EILSEQ); in do_journal_write()
2542 r = dm_integrity_rw_tag(ic, journal_entry_tag(ic, je2), &metadata_block, &metadata_offset, in do_journal_write()
2543 ic->tag_size, TAG_WRITE); in do_journal_write()
2545 dm_integrity_io_error(ic, "reading tags", r); in do_journal_write()
2550 copy_from_journal(ic, i, j << ic->sb->log2_sectors_per_block, in do_journal_write()
2551 (k - j) << ic->sb->log2_sectors_per_block, in do_journal_write()
2552 get_data_sector(ic, area, offset), in do_journal_write()
2559 dm_bufio_write_dirty_buffers_async(ic->bufio); in do_journal_write()
2566 dm_integrity_flush_buffers(ic, true); in do_journal_write()
2571 struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, writer_work); in integrity_writer() local
2577 if (unlikely(dm_post_suspending(ic->ti)) && !ic->meta_dev) in integrity_writer()
2580 spin_lock_irq(&ic->endio_wait.lock); in integrity_writer()
2581 write_start = ic->committed_section; in integrity_writer()
2582 write_sections = ic->n_committed_sections; in integrity_writer()
2583 spin_unlock_irq(&ic->endio_wait.lock); in integrity_writer()
2588 do_journal_write(ic, write_start, write_sections, false); in integrity_writer()
2590 spin_lock_irq(&ic->endio_wait.lock); in integrity_writer()
2592 ic->committed_section += write_sections; in integrity_writer()
2593 wraparound_section(ic, &ic->committed_section); in integrity_writer()
2594 ic->n_committed_sections -= write_sections; in integrity_writer()
2596 prev_free_sectors = ic->free_sectors; in integrity_writer()
2597 ic->free_sectors += write_sections * ic->journal_section_entries; in integrity_writer()
2599 wake_up_locked(&ic->endio_wait); in integrity_writer()
2601 spin_unlock_irq(&ic->endio_wait.lock); in integrity_writer()
2604 static void recalc_write_super(struct dm_integrity_c *ic) in recalc_write_super() argument
2608 dm_integrity_flush_buffers(ic, false); in recalc_write_super()
2609 if (dm_integrity_failed(ic)) in recalc_write_super()
2612 r = sync_rw_sb(ic, REQ_OP_WRITE, 0); in recalc_write_super()
2614 dm_integrity_io_error(ic, "writing superblock", r); in recalc_write_super()
2619 struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, recalc_work); in integrity_recalc() local
2632 DEBUG_print("start recalculation... (position %llx)\n", le64_to_cpu(ic->sb->recalc_sector)); in integrity_recalc()
2634 spin_lock_irq(&ic->endio_wait.lock); in integrity_recalc()
2638 if (unlikely(dm_post_suspending(ic->ti))) in integrity_recalc()
2641 range.logical_sector = le64_to_cpu(ic->sb->recalc_sector); in integrity_recalc()
2642 if (unlikely(range.logical_sector >= ic->provided_data_sectors)) { in integrity_recalc()
2643 if (ic->mode == 'B') { in integrity_recalc()
2644 block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR); in integrity_recalc()
2646 queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0); in integrity_recalc()
2651 get_area_and_offset(ic, range.logical_sector, &area, &offset); in integrity_recalc()
2652 range.n_sectors = min((sector_t)RECALC_SECTORS, ic->provided_data_sectors - range.logical_sector); in integrity_recalc()
2653 if (!ic->meta_dev) in integrity_recalc()
2654 …range.n_sectors = min(range.n_sectors, ((sector_t)1U << ic->sb->log2_interleave_sectors) - (unsign… in integrity_recalc()
2656 add_new_range_and_wait(ic, &range); in integrity_recalc()
2657 spin_unlock_irq(&ic->endio_wait.lock); in integrity_recalc()
2661 if (ic->mode == 'B') { in integrity_recalc()
2662 if (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector, n_sectors, BITMAP_OP_TEST_ALL_CLEAR)) { in integrity_recalc()
2665 while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector, in integrity_recalc()
2666 ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) { in integrity_recalc()
2667 logical_sector += ic->sectors_per_block; in integrity_recalc()
2668 n_sectors -= ic->sectors_per_block; in integrity_recalc()
2671 while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector + n_sectors - ic->sectors_per_block, in integrity_recalc()
2672 ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) { in integrity_recalc()
2673 n_sectors -= ic->sectors_per_block; in integrity_recalc()
2676 get_area_and_offset(ic, logical_sector, &area, &offset); in integrity_recalc()
2682 recalc_write_super(ic); in integrity_recalc()
2683 if (ic->mode == 'B') { in integrity_recalc()
2684 queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval); in integrity_recalc()
2689 if (unlikely(dm_integrity_failed(ic))) in integrity_recalc()
2695 io_req.mem.ptr.addr = ic->recalc_buffer; in integrity_recalc()
2697 io_req.client = ic->io; in integrity_recalc()
2698 io_loc.bdev = ic->dev->bdev; in integrity_recalc()
2699 io_loc.sector = get_data_sector(ic, area, offset); in integrity_recalc()
2704 dm_integrity_io_error(ic, "reading data", r); in integrity_recalc()
2708 t = ic->recalc_tags; in integrity_recalc()
2709 for (i = 0; i < n_sectors; i += ic->sectors_per_block) { in integrity_recalc()
2710 integrity_sector_checksum(ic, logical_sector + i, ic->recalc_buffer + (i << SECTOR_SHIFT), t); in integrity_recalc()
2711 t += ic->tag_size; in integrity_recalc()
2714 metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset); in integrity_recalc()
2716 …r = dm_integrity_rw_tag(ic, ic->recalc_tags, &metadata_block, &metadata_offset, t - ic->recalc_tag… in integrity_recalc()
2718 dm_integrity_io_error(ic, "writing tags", r); in integrity_recalc()
2722 if (ic->mode == 'B') { in integrity_recalc()
2725 (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) << in integrity_recalc()
2726 (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit); in integrity_recalc()
2728 (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) << in integrity_recalc()
2729 (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit); in integrity_recalc()
2730 block_bitmap_op(ic, ic->recalc_bitmap, start, end - start, BITMAP_OP_CLEAR); in integrity_recalc()
2736 spin_lock_irq(&ic->endio_wait.lock); in integrity_recalc()
2737 remove_range_unlocked(ic, &range); in integrity_recalc()
2738 ic->sb->recalc_sector = cpu_to_le64(range.logical_sector + range.n_sectors); in integrity_recalc()
2742 remove_range(ic, &range); in integrity_recalc()
2746 spin_unlock_irq(&ic->endio_wait.lock); in integrity_recalc()
2748 recalc_write_super(ic); in integrity_recalc()
2754 struct dm_integrity_c *ic = bbs->ic; in bitmap_block_work() local
2771 if (block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector, in bitmap_block_work()
2773 remove_range(ic, &dio->range); in bitmap_block_work()
2775 queue_work(ic->offload_wq, &dio->work); in bitmap_block_work()
2777 block_bitmap_op(ic, ic->journal, dio->range.logical_sector, in bitmap_block_work()
2786 rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, in bitmap_block_work()
2793 block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector, in bitmap_block_work()
2796 remove_range(ic, &dio->range); in bitmap_block_work()
2798 queue_work(ic->offload_wq, &dio->work); in bitmap_block_work()
2801 queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval); in bitmap_block_work()
2806 struct dm_integrity_c *ic = container_of(work, struct dm_integrity_c, bitmap_flush_work.work); in bitmap_flush_work() local
2811 dm_integrity_flush_buffers(ic, false); in bitmap_flush_work()
2814 range.n_sectors = ic->provided_data_sectors; in bitmap_flush_work()
2816 spin_lock_irq(&ic->endio_wait.lock); in bitmap_flush_work()
2817 add_new_range_and_wait(ic, &range); in bitmap_flush_work()
2818 spin_unlock_irq(&ic->endio_wait.lock); in bitmap_flush_work()
2820 dm_integrity_flush_buffers(ic, true); in bitmap_flush_work()
2822 limit = ic->provided_data_sectors; in bitmap_flush_work()
2823 if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) { in bitmap_flush_work()
2824 limit = le64_to_cpu(ic->sb->recalc_sector) in bitmap_flush_work()
2825 >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit) in bitmap_flush_work()
2826 << (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit); in bitmap_flush_work()
2829 block_bitmap_op(ic, ic->journal, 0, limit, BITMAP_OP_CLEAR); in bitmap_flush_work()
2830 block_bitmap_op(ic, ic->may_write_bitmap, 0, limit, BITMAP_OP_CLEAR); in bitmap_flush_work()
2832 rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, in bitmap_flush_work()
2833 ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); in bitmap_flush_work()
2835 spin_lock_irq(&ic->endio_wait.lock); in bitmap_flush_work()
2836 remove_range_unlocked(ic, &range); in bitmap_flush_work()
2837 while (unlikely((bio = bio_list_pop(&ic->synchronous_bios)) != NULL)) { in bitmap_flush_work()
2839 spin_unlock_irq(&ic->endio_wait.lock); in bitmap_flush_work()
2840 spin_lock_irq(&ic->endio_wait.lock); in bitmap_flush_work()
2842 spin_unlock_irq(&ic->endio_wait.lock); in bitmap_flush_work()
2846 static void init_journal(struct dm_integrity_c *ic, unsigned start_section, in init_journal() argument
2856 wraparound_section(ic, &i); in init_journal()
2857 for (j = 0; j < ic->journal_section_sectors; j++) { in init_journal()
2858 struct journal_sector *js = access_journal(ic, i, j); in init_journal()
2860 js->commit_id = dm_integrity_commit_id(ic, i, j, commit_seq); in init_journal()
2862 for (j = 0; j < ic->journal_section_entries; j++) { in init_journal()
2863 struct journal_entry *je = access_journal_entry(ic, i, j); in init_journal()
2868 write_journal(ic, start_section, n_sections); in init_journal()
2871 static int find_commit_seq(struct dm_integrity_c *ic, unsigned i, unsigned j, commit_id_t id) in find_commit_seq() argument
2875 if (dm_integrity_commit_id(ic, i, j, k) == id) in find_commit_seq()
2878 dm_integrity_io_error(ic, "journal commit id", -EIO); in find_commit_seq()
2882 static void replay_journal(struct dm_integrity_c *ic) in replay_journal() argument
2892 if (ic->mode == 'R') in replay_journal()
2895 if (ic->journal_uptodate) in replay_journal()
2901 if (!ic->just_formatted) { in replay_journal()
2903 rw_journal(ic, REQ_OP_READ, 0, 0, ic->journal_sections, NULL); in replay_journal()
2904 if (ic->journal_io) in replay_journal()
2905 DEBUG_bytes(lowmem_page_address(ic->journal_io[0].page), 64, "read journal"); in replay_journal()
2906 if (ic->journal_io) { in replay_journal()
2908 crypt_comp.ic = ic; in replay_journal()
2911 encrypt_journal(ic, false, 0, ic->journal_sections, &crypt_comp); in replay_journal()
2914 DEBUG_bytes(lowmem_page_address(ic->journal[0].page), 64, "decrypted journal"); in replay_journal()
2917 if (dm_integrity_failed(ic)) in replay_journal()
2923 for (i = 0; i < ic->journal_sections; i++) { in replay_journal()
2924 for (j = 0; j < ic->journal_section_sectors; j++) { in replay_journal()
2926 struct journal_sector *js = access_journal(ic, i, j); in replay_journal()
2927 k = find_commit_seq(ic, i, j, js->commit_id); in replay_journal()
2934 for (j = 0; j < ic->journal_section_entries; j++) { in replay_journal()
2935 struct journal_entry *je = access_journal_entry(ic, i, j); in replay_journal()
2953 dm_integrity_io_error(ic, "journal commit ids", -EIO); in replay_journal()
2968 if (unlikely(write_start >= ic->journal_sections)) in replay_journal()
2970 wraparound_section(ic, &write_start); in replay_journal()
2973 for (write_sections = 0; write_sections < ic->journal_sections; write_sections++) { in replay_journal()
2974 for (j = 0; j < ic->journal_section_sectors; j++) { in replay_journal()
2975 struct journal_sector *js = access_journal(ic, i, j); in replay_journal()
2977 if (js->commit_id != dm_integrity_commit_id(ic, i, j, want_commit_seq)) { in replay_journal()
2984 i, j, find_commit_seq(ic, i, j, js->commit_id), want_commit_seq); in replay_journal()
2989 if (unlikely(i >= ic->journal_sections)) in replay_journal()
2991 wraparound_section(ic, &i); in replay_journal()
2998 do_journal_write(ic, write_start, write_sections, true); in replay_journal()
3001 if (write_sections == ic->journal_sections && (ic->mode == 'J' || journal_empty)) { in replay_journal()
3003 ic->commit_seq = want_commit_seq; in replay_journal()
3004 DEBUG_print("continuing from section %u, commit seq %d\n", write_start, ic->commit_seq); in replay_journal()
3013 init_journal(ic, s, 1, erase_seq); in replay_journal()
3015 wraparound_section(ic, &s); in replay_journal()
3016 if (ic->journal_sections >= 2) { in replay_journal()
3017 init_journal(ic, s, ic->journal_sections - 2, erase_seq); in replay_journal()
3018 s += ic->journal_sections - 2; in replay_journal()
3019 wraparound_section(ic, &s); in replay_journal()
3020 init_journal(ic, s, 1, erase_seq); in replay_journal()
3024 ic->commit_seq = next_commit_seq(erase_seq); in replay_journal()
3027 ic->committed_section = continue_section; in replay_journal()
3028 ic->n_committed_sections = 0; in replay_journal()
3030 ic->uncommitted_section = continue_section; in replay_journal()
3031 ic->n_uncommitted_sections = 0; in replay_journal()
3033 ic->free_section = continue_section; in replay_journal()
3034 ic->free_section_entry = 0; in replay_journal()
3035 ic->free_sectors = ic->journal_entries; in replay_journal()
3037 ic->journal_tree_root = RB_ROOT; in replay_journal()
3038 for (i = 0; i < ic->journal_entries; i++) in replay_journal()
3039 init_journal_node(&ic->journal_tree[i]); in replay_journal()
3042 static void dm_integrity_enter_synchronous_mode(struct dm_integrity_c *ic) in dm_integrity_enter_synchronous_mode() argument
3046 if (ic->mode == 'B') { in dm_integrity_enter_synchronous_mode()
3047 ic->bitmap_flush_interval = msecs_to_jiffies(10) + 1; in dm_integrity_enter_synchronous_mode()
3048 ic->synchronous_mode = 1; in dm_integrity_enter_synchronous_mode()
3050 cancel_delayed_work_sync(&ic->bitmap_flush_work); in dm_integrity_enter_synchronous_mode()
3051 queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0); in dm_integrity_enter_synchronous_mode()
3052 flush_workqueue(ic->commit_wq); in dm_integrity_enter_synchronous_mode()
3058 struct dm_integrity_c *ic = container_of(n, struct dm_integrity_c, reboot_notifier); in dm_integrity_reboot() local
3062 dm_integrity_enter_synchronous_mode(ic); in dm_integrity_reboot()
3069 struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private; in dm_integrity_postsuspend() local
3072 WARN_ON(unregister_reboot_notifier(&ic->reboot_notifier)); in dm_integrity_postsuspend()
3074 del_timer_sync(&ic->autocommit_timer); in dm_integrity_postsuspend()
3076 if (ic->recalc_wq) in dm_integrity_postsuspend()
3077 drain_workqueue(ic->recalc_wq); in dm_integrity_postsuspend()
3079 if (ic->mode == 'B') in dm_integrity_postsuspend()
3080 cancel_delayed_work_sync(&ic->bitmap_flush_work); in dm_integrity_postsuspend()
3082 queue_work(ic->commit_wq, &ic->commit_work); in dm_integrity_postsuspend()
3083 drain_workqueue(ic->commit_wq); in dm_integrity_postsuspend()
3085 if (ic->mode == 'J') { in dm_integrity_postsuspend()
3086 if (ic->meta_dev) in dm_integrity_postsuspend()
3087 queue_work(ic->writer_wq, &ic->writer_work); in dm_integrity_postsuspend()
3088 drain_workqueue(ic->writer_wq); in dm_integrity_postsuspend()
3089 dm_integrity_flush_buffers(ic, true); in dm_integrity_postsuspend()
3092 if (ic->mode == 'B') { in dm_integrity_postsuspend()
3093 dm_integrity_flush_buffers(ic, true); in dm_integrity_postsuspend()
3096 init_journal(ic, 0, ic->journal_sections, 0); in dm_integrity_postsuspend()
3097 ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP); in dm_integrity_postsuspend()
3098 r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA); in dm_integrity_postsuspend()
3100 dm_integrity_io_error(ic, "writing superblock", r); in dm_integrity_postsuspend()
3104 BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress)); in dm_integrity_postsuspend()
3106 ic->journal_uptodate = true; in dm_integrity_postsuspend()
3111 struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private; in dm_integrity_resume() local
3112 __u64 old_provided_data_sectors = le64_to_cpu(ic->sb->provided_data_sectors); in dm_integrity_resume()
3117 if (ic->provided_data_sectors != old_provided_data_sectors) { in dm_integrity_resume()
3118 if (ic->provided_data_sectors > old_provided_data_sectors && in dm_integrity_resume()
3119 ic->mode == 'B' && in dm_integrity_resume()
3120 ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit) { in dm_integrity_resume()
3121 rw_journal_sectors(ic, REQ_OP_READ, 0, 0, in dm_integrity_resume()
3122 ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); in dm_integrity_resume()
3123 block_bitmap_op(ic, ic->journal, old_provided_data_sectors, in dm_integrity_resume()
3124 ic->provided_data_sectors - old_provided_data_sectors, BITMAP_OP_SET); in dm_integrity_resume()
3125 rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, in dm_integrity_resume()
3126 ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); in dm_integrity_resume()
3129 ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors); in dm_integrity_resume()
3130 r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA); in dm_integrity_resume()
3132 dm_integrity_io_error(ic, "writing superblock", r); in dm_integrity_resume()
3135 if (ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP)) { in dm_integrity_resume()
3137 rw_journal_sectors(ic, REQ_OP_READ, 0, 0, in dm_integrity_resume()
3138 ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); in dm_integrity_resume()
3139 if (ic->mode == 'B') { in dm_integrity_resume()
3140 if (ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit && in dm_integrity_resume()
3141 !ic->reset_recalculate_flag) { in dm_integrity_resume()
3142 block_bitmap_copy(ic, ic->recalc_bitmap, ic->journal); in dm_integrity_resume()
3143 block_bitmap_copy(ic, ic->may_write_bitmap, ic->journal); in dm_integrity_resume()
3144 if (!block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, in dm_integrity_resume()
3146 ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING); in dm_integrity_resume()
3147 ic->sb->recalc_sector = cpu_to_le64(0); in dm_integrity_resume()
3151 ic->sb->log2_blocks_per_bitmap_bit, ic->log2_blocks_per_bitmap_bit); in dm_integrity_resume()
3152 ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit; in dm_integrity_resume()
3153 block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET); in dm_integrity_resume()
3154 block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET); in dm_integrity_resume()
3155 block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_SET); in dm_integrity_resume()
3156 rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, in dm_integrity_resume()
3157 ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); in dm_integrity_resume()
3158 ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING); in dm_integrity_resume()
3159 ic->sb->recalc_sector = cpu_to_le64(0); in dm_integrity_resume()
3162 if (!(ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit && in dm_integrity_resume()
3163 … block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_TEST_ALL_CLEAR)) || in dm_integrity_resume()
3164 ic->reset_recalculate_flag) { in dm_integrity_resume()
3165 ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING); in dm_integrity_resume()
3166 ic->sb->recalc_sector = cpu_to_le64(0); in dm_integrity_resume()
3168 init_journal(ic, 0, ic->journal_sections, 0); in dm_integrity_resume()
3169 replay_journal(ic); in dm_integrity_resume()
3170 ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP); in dm_integrity_resume()
3172 r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA); in dm_integrity_resume()
3174 dm_integrity_io_error(ic, "writing superblock", r); in dm_integrity_resume()
3176 replay_journal(ic); in dm_integrity_resume()
3177 if (ic->reset_recalculate_flag) { in dm_integrity_resume()
3178 ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING); in dm_integrity_resume()
3179 ic->sb->recalc_sector = cpu_to_le64(0); in dm_integrity_resume()
3181 if (ic->mode == 'B') { in dm_integrity_resume()
3182 ic->sb->flags |= cpu_to_le32(SB_FLAG_DIRTY_BITMAP); in dm_integrity_resume()
3183 ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit; in dm_integrity_resume()
3184 r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA); in dm_integrity_resume()
3186 dm_integrity_io_error(ic, "writing superblock", r); in dm_integrity_resume()
3188 block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR); in dm_integrity_resume()
3189 block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR); in dm_integrity_resume()
3190 block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR); in dm_integrity_resume()
3191 if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) && in dm_integrity_resume()
3192 le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors) { in dm_integrity_resume()
3193 block_bitmap_op(ic, ic->journal, le64_to_cpu(ic->sb->recalc_sector), in dm_integrity_resume()
3194 ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET); in dm_integrity_resume()
3195 block_bitmap_op(ic, ic->recalc_bitmap, le64_to_cpu(ic->sb->recalc_sector), in dm_integrity_resume()
3196 ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET); in dm_integrity_resume()
3197 block_bitmap_op(ic, ic->may_write_bitmap, le64_to_cpu(ic->sb->recalc_sector), in dm_integrity_resume()
3198 ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET); in dm_integrity_resume()
3200 rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, in dm_integrity_resume()
3201 ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); in dm_integrity_resume()
3205 DEBUG_print("testing recalc: %x\n", ic->sb->flags); in dm_integrity_resume()
3206 if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) { in dm_integrity_resume()
3207 __u64 recalc_pos = le64_to_cpu(ic->sb->recalc_sector); in dm_integrity_resume()
3208 DEBUG_print("recalc pos: %llx / %llx\n", recalc_pos, ic->provided_data_sectors); in dm_integrity_resume()
3209 if (recalc_pos < ic->provided_data_sectors) { in dm_integrity_resume()
3210 queue_work(ic->recalc_wq, &ic->recalc_work); in dm_integrity_resume()
3211 } else if (recalc_pos > ic->provided_data_sectors) { in dm_integrity_resume()
3212 ic->sb->recalc_sector = cpu_to_le64(ic->provided_data_sectors); in dm_integrity_resume()
3213 recalc_write_super(ic); in dm_integrity_resume()
3217 ic->reboot_notifier.notifier_call = dm_integrity_reboot; in dm_integrity_resume()
3218 ic->reboot_notifier.next = NULL; in dm_integrity_resume()
3219 ic->reboot_notifier.priority = INT_MAX - 1; /* be notified after md and before hardware drivers */ in dm_integrity_resume()
3220 WARN_ON(register_reboot_notifier(&ic->reboot_notifier)); in dm_integrity_resume()
3224 dm_integrity_enter_synchronous_mode(ic); in dm_integrity_resume()
3231 struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private; in dm_integrity_status() local
3238 (unsigned long long)atomic64_read(&ic->number_of_mismatches), in dm_integrity_status()
3239 ic->provided_data_sectors); in dm_integrity_status()
3240 if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) in dm_integrity_status()
3241 DMEMIT(" %llu", le64_to_cpu(ic->sb->recalc_sector)); in dm_integrity_status()
3247 __u64 watermark_percentage = (__u64)(ic->journal_entries - ic->free_sectors_threshold) * 100; in dm_integrity_status()
3248 watermark_percentage += ic->journal_entries / 2; in dm_integrity_status()
3249 do_div(watermark_percentage, ic->journal_entries); in dm_integrity_status()
3251 arg_count += !!ic->meta_dev; in dm_integrity_status()
3252 arg_count += ic->sectors_per_block != 1; in dm_integrity_status()
3253 arg_count += !!(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)); in dm_integrity_status()
3254 arg_count += ic->reset_recalculate_flag; in dm_integrity_status()
3255 arg_count += ic->discard; in dm_integrity_status()
3256 arg_count += ic->mode == 'J'; in dm_integrity_status()
3257 arg_count += ic->mode == 'J'; in dm_integrity_status()
3258 arg_count += ic->mode == 'B'; in dm_integrity_status()
3259 arg_count += ic->mode == 'B'; in dm_integrity_status()
3260 arg_count += !!ic->internal_hash_alg.alg_string; in dm_integrity_status()
3261 arg_count += !!ic->journal_crypt_alg.alg_string; in dm_integrity_status()
3262 arg_count += !!ic->journal_mac_alg.alg_string; in dm_integrity_status()
3263 arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0; in dm_integrity_status()
3264 arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0; in dm_integrity_status()
3265 arg_count += ic->legacy_recalculate; in dm_integrity_status()
3266 DMEMIT("%s %llu %u %c %u", ic->dev->name, ic->start, in dm_integrity_status()
3267 ic->tag_size, ic->mode, arg_count); in dm_integrity_status()
3268 if (ic->meta_dev) in dm_integrity_status()
3269 DMEMIT(" meta_device:%s", ic->meta_dev->name); in dm_integrity_status()
3270 if (ic->sectors_per_block != 1) in dm_integrity_status()
3271 DMEMIT(" block_size:%u", ic->sectors_per_block << SECTOR_SHIFT); in dm_integrity_status()
3272 if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) in dm_integrity_status()
3274 if (ic->reset_recalculate_flag) in dm_integrity_status()
3276 if (ic->discard) in dm_integrity_status()
3278 DMEMIT(" journal_sectors:%u", ic->initial_sectors - SB_SECTORS); in dm_integrity_status()
3279 DMEMIT(" interleave_sectors:%u", 1U << ic->sb->log2_interleave_sectors); in dm_integrity_status()
3280 DMEMIT(" buffer_sectors:%u", 1U << ic->log2_buffer_sectors); in dm_integrity_status()
3281 if (ic->mode == 'J') { in dm_integrity_status()
3283 DMEMIT(" commit_time:%u", ic->autocommit_msec); in dm_integrity_status()
3285 if (ic->mode == 'B') { in dm_integrity_status()
3286 …DMEMIT(" sectors_per_bit:%llu", (sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit); in dm_integrity_status()
3287 DMEMIT(" bitmap_flush_interval:%u", jiffies_to_msecs(ic->bitmap_flush_interval)); in dm_integrity_status()
3289 if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0) in dm_integrity_status()
3291 if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0) in dm_integrity_status()
3293 if (ic->legacy_recalculate) in dm_integrity_status()
3298 if (ic->a.alg_string) { \ in dm_integrity_status()
3299 DMEMIT(" %s:%s", n, ic->a.alg_string); \ in dm_integrity_status()
3300 if (ic->a.key_string) \ in dm_integrity_status()
3301 DMEMIT(":%s", ic->a.key_string);\ in dm_integrity_status()
3312 ic->dev->name, ic->start, ic->tag_size, ic->mode); in dm_integrity_status()
3314 if (ic->meta_dev) in dm_integrity_status()
3315 DMEMIT(",meta_device=%s", ic->meta_dev->name); in dm_integrity_status()
3316 if (ic->sectors_per_block != 1) in dm_integrity_status()
3317 DMEMIT(",block_size=%u", ic->sectors_per_block << SECTOR_SHIFT); in dm_integrity_status()
3319 DMEMIT(",recalculate=%c", (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) ? in dm_integrity_status()
3321 DMEMIT(",allow_discards=%c", ic->discard ? 'y' : 'n'); in dm_integrity_status()
3323 ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0) ? 'y' : 'n'); in dm_integrity_status()
3325 ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0) ? 'y' : 'n'); in dm_integrity_status()
3326 DMEMIT(",legacy_recalculate=%c", ic->legacy_recalculate ? 'y' : 'n'); in dm_integrity_status()
3328 DMEMIT(",journal_sectors=%u", ic->initial_sectors - SB_SECTORS); in dm_integrity_status()
3329 DMEMIT(",interleave_sectors=%u", 1U << ic->sb->log2_interleave_sectors); in dm_integrity_status()
3330 DMEMIT(",buffer_sectors=%u", 1U << ic->log2_buffer_sectors); in dm_integrity_status()
3339 struct dm_integrity_c *ic = ti->private; in dm_integrity_iterate_devices() local
3341 if (!ic->meta_dev) in dm_integrity_iterate_devices()
3342 return fn(ti, ic->dev, ic->start + ic->initial_sectors + ic->metadata_run, ti->len, data); in dm_integrity_iterate_devices()
3344 return fn(ti, ic->dev, 0, ti->len, data); in dm_integrity_iterate_devices()
3349 struct dm_integrity_c *ic = ti->private; in dm_integrity_io_hints() local
3351 if (ic->sectors_per_block > 1) { in dm_integrity_io_hints()
3352 limits->logical_block_size = ic->sectors_per_block << SECTOR_SHIFT; in dm_integrity_io_hints()
3353 limits->physical_block_size = ic->sectors_per_block << SECTOR_SHIFT; in dm_integrity_io_hints()
3354 blk_limits_io_min(limits, ic->sectors_per_block << SECTOR_SHIFT); in dm_integrity_io_hints()
3358 static void calculate_journal_section_size(struct dm_integrity_c *ic) in calculate_journal_section_size() argument
3362 ic->journal_sections = le32_to_cpu(ic->sb->journal_sections); in calculate_journal_section_size()
3363 …ic->journal_entry_size = roundup(offsetof(struct journal_entry, last_bytes[ic->sectors_per_block])… in calculate_journal_section_size()
3366 if (ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC)) in calculate_journal_section_size()
3368 ic->journal_entries_per_sector = sector_space / ic->journal_entry_size; in calculate_journal_section_size()
3369 ic->journal_section_entries = ic->journal_entries_per_sector * JOURNAL_BLOCK_SECTORS; in calculate_journal_section_size()
3370 …ic->journal_section_sectors = (ic->journal_section_entries << ic->sb->log2_sectors_per_block) + JO… in calculate_journal_section_size()
3371 ic->journal_entries = ic->journal_section_entries * ic->journal_sections; in calculate_journal_section_size()
3374 static int calculate_device_limits(struct dm_integrity_c *ic) in calculate_device_limits() argument
3378 calculate_journal_section_size(ic); in calculate_device_limits()
3379 initial_sectors = SB_SECTORS + (__u64)ic->journal_section_sectors * ic->journal_sections; in calculate_device_limits()
3380 …if (initial_sectors + METADATA_PADDING_SECTORS >= ic->meta_device_sectors || initial_sectors > UIN… in calculate_device_limits()
3382 ic->initial_sectors = initial_sectors; in calculate_device_limits()
3384 if (!ic->meta_dev) { in calculate_device_limits()
3389 ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING) ? in calculate_device_limits()
3393 …ic->metadata_run = round_up((__u64)ic->tag_size << (ic->sb->log2_interleave_sectors - ic->sb->log2… in calculate_device_limits()
3395 if (!(ic->metadata_run & (ic->metadata_run - 1))) in calculate_device_limits()
3396 ic->log2_metadata_run = __ffs(ic->metadata_run); in calculate_device_limits()
3398 ic->log2_metadata_run = -1; in calculate_device_limits()
3400 get_area_and_offset(ic, ic->provided_data_sectors - 1, &last_area, &last_offset); in calculate_device_limits()
3401 last_sector = get_data_sector(ic, last_area, last_offset); in calculate_device_limits()
3402 if (last_sector < ic->start || last_sector >= ic->meta_device_sectors) in calculate_device_limits()
3405 __u64 meta_size = (ic->provided_data_sectors >> ic->sb->log2_sectors_per_block) * ic->tag_size; in calculate_device_limits()
3406 meta_size = (meta_size + ((1U << (ic->log2_buffer_sectors + SECTOR_SHIFT)) - 1)) in calculate_device_limits()
3407 >> (ic->log2_buffer_sectors + SECTOR_SHIFT); in calculate_device_limits()
3408 meta_size <<= ic->log2_buffer_sectors; in calculate_device_limits()
3409 if (ic->initial_sectors + meta_size < ic->initial_sectors || in calculate_device_limits()
3410 ic->initial_sectors + meta_size > ic->meta_device_sectors) in calculate_device_limits()
3412 ic->metadata_run = 1; in calculate_device_limits()
3413 ic->log2_metadata_run = 0; in calculate_device_limits()
3419 static void get_provided_data_sectors(struct dm_integrity_c *ic) in get_provided_data_sectors() argument
3421 if (!ic->meta_dev) { in get_provided_data_sectors()
3423 ic->provided_data_sectors = 0; in get_provided_data_sectors()
3424 for (test_bit = fls64(ic->meta_device_sectors) - 1; test_bit >= 3; test_bit--) { in get_provided_data_sectors()
3425 __u64 prev_data_sectors = ic->provided_data_sectors; in get_provided_data_sectors()
3427 ic->provided_data_sectors |= (sector_t)1 << test_bit; in get_provided_data_sectors()
3428 if (calculate_device_limits(ic)) in get_provided_data_sectors()
3429 ic->provided_data_sectors = prev_data_sectors; in get_provided_data_sectors()
3432 ic->provided_data_sectors = ic->data_device_sectors; in get_provided_data_sectors()
3433 ic->provided_data_sectors &= ~(sector_t)(ic->sectors_per_block - 1); in get_provided_data_sectors()
3437 static int initialize_superblock(struct dm_integrity_c *ic, unsigned journal_sectors, unsigned inte… in initialize_superblock() argument
3442 memset(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT); in initialize_superblock()
3443 memcpy(ic->sb->magic, SB_MAGIC, 8); in initialize_superblock()
3444 ic->sb->integrity_tag_size = cpu_to_le16(ic->tag_size); in initialize_superblock()
3445 ic->sb->log2_sectors_per_block = __ffs(ic->sectors_per_block); in initialize_superblock()
3446 if (ic->journal_mac_alg.alg_string) in initialize_superblock()
3447 ic->sb->flags |= cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC); in initialize_superblock()
3449 calculate_journal_section_size(ic); in initialize_superblock()
3450 journal_sections = journal_sectors / ic->journal_section_sectors; in initialize_superblock()
3454 if (ic->fix_hmac && (ic->internal_hash_alg.alg_string || ic->journal_mac_alg.alg_string)) { in initialize_superblock()
3455 ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_HMAC); in initialize_superblock()
3456 get_random_bytes(ic->sb->salt, SALT_SIZE); in initialize_superblock()
3459 if (!ic->meta_dev) { in initialize_superblock()
3460 if (ic->fix_padding) in initialize_superblock()
3461 ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_PADDING); in initialize_superblock()
3462 ic->sb->journal_sections = cpu_to_le32(journal_sections); in initialize_superblock()
3465 ic->sb->log2_interleave_sectors = __fls(interleave_sectors); in initialize_superblock()
3466 …ic->sb->log2_interleave_sectors = max((__u8)MIN_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave_s… in initialize_superblock()
3467 …ic->sb->log2_interleave_sectors = min((__u8)MAX_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave_s… in initialize_superblock()
3469 get_provided_data_sectors(ic); in initialize_superblock()
3470 if (!ic->provided_data_sectors) in initialize_superblock()
3473 ic->sb->log2_interleave_sectors = 0; in initialize_superblock()
3475 get_provided_data_sectors(ic); in initialize_superblock()
3476 if (!ic->provided_data_sectors) in initialize_superblock()
3480 ic->sb->journal_sections = cpu_to_le32(0); in initialize_superblock()
3482 __u32 prev_journal_sections = le32_to_cpu(ic->sb->journal_sections); in initialize_superblock()
3486 ic->sb->journal_sections = cpu_to_le32(test_journal_sections); in initialize_superblock()
3487 if (calculate_device_limits(ic)) in initialize_superblock()
3488 ic->sb->journal_sections = cpu_to_le32(prev_journal_sections); in initialize_superblock()
3491 if (!le32_to_cpu(ic->sb->journal_sections)) { in initialize_superblock()
3492 if (ic->log2_buffer_sectors > 3) { in initialize_superblock()
3493 ic->log2_buffer_sectors--; in initialize_superblock()
3500 ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors); in initialize_superblock()
3502 sb_set_version(ic); in initialize_superblock()
3507 static void dm_integrity_set(struct dm_target *ti, struct dm_integrity_c *ic) in dm_integrity_set() argument
3514 bi.tuple_size = ic->tag_size; in dm_integrity_set()
3516 bi.interval_exp = ic->sb->log2_sectors_per_block + SECTOR_SHIFT; in dm_integrity_set()
3557 static void dm_integrity_free_journal_scatterlist(struct dm_integrity_c *ic, struct scatterlist **s… in dm_integrity_free_journal_scatterlist() argument
3560 for (i = 0; i < ic->journal_sections; i++) in dm_integrity_free_journal_scatterlist()
3565 static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_integrity_c *ic, in dm_integrity_alloc_journal_scatterlist() argument
3571 sl = kvmalloc_array(ic->journal_sections, in dm_integrity_alloc_journal_scatterlist()
3577 for (i = 0; i < ic->journal_sections; i++) { in dm_integrity_alloc_journal_scatterlist()
3584 page_list_location(ic, i, 0, &start_index, &start_offset); in dm_integrity_alloc_journal_scatterlist()
3585 page_list_location(ic, i, ic->journal_section_sectors - 1, in dm_integrity_alloc_journal_scatterlist()
3593 dm_integrity_free_journal_scatterlist(ic, sl); in dm_integrity_alloc_journal_scatterlist()
3684 static int create_journal(struct dm_integrity_c *ic, char **error) in create_journal() argument
3692 ic->commit_ids[0] = cpu_to_le64(0x1111111111111111ULL); in create_journal()
3693 ic->commit_ids[1] = cpu_to_le64(0x2222222222222222ULL); in create_journal()
3694 ic->commit_ids[2] = cpu_to_le64(0x3333333333333333ULL); in create_journal()
3695 ic->commit_ids[3] = cpu_to_le64(0x4444444444444444ULL); in create_journal()
3697 journal_pages = roundup((__u64)ic->journal_sections * ic->journal_section_sectors, in create_journal()
3705 ic->journal_pages = journal_pages; in create_journal()
3707 ic->journal = dm_integrity_alloc_page_list(ic->journal_pages); in create_journal()
3708 if (!ic->journal) { in create_journal()
3713 if (ic->journal_crypt_alg.alg_string) { in create_journal()
3717 comp.ic = ic; in create_journal()
3718 …ic->journal_crypt = crypto_alloc_skcipher(ic->journal_crypt_alg.alg_string, 0, CRYPTO_ALG_ALLOCATE… in create_journal()
3719 if (IS_ERR(ic->journal_crypt)) { in create_journal()
3721 r = PTR_ERR(ic->journal_crypt); in create_journal()
3722 ic->journal_crypt = NULL; in create_journal()
3725 ivsize = crypto_skcipher_ivsize(ic->journal_crypt); in create_journal()
3726 blocksize = crypto_skcipher_blocksize(ic->journal_crypt); in create_journal()
3728 if (ic->journal_crypt_alg.key) { in create_journal()
3729 r = crypto_skcipher_setkey(ic->journal_crypt, ic->journal_crypt_alg.key, in create_journal()
3730 ic->journal_crypt_alg.key_size); in create_journal()
3737 ic->journal_crypt_alg.alg_string, blocksize, ivsize); in create_journal()
3739 ic->journal_io = dm_integrity_alloc_page_list(ic->journal_pages); in create_journal()
3740 if (!ic->journal_io) { in create_journal()
3749 req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL); in create_journal()
3763 ic->journal_xor = dm_integrity_alloc_page_list(ic->journal_pages); in create_journal()
3764 if (!ic->journal_xor) { in create_journal()
3770 sg = kvmalloc_array(ic->journal_pages + 1, in create_journal()
3778 sg_init_table(sg, ic->journal_pages + 1); in create_journal()
3779 for (i = 0; i < ic->journal_pages; i++) { in create_journal()
3780 char *va = lowmem_page_address(ic->journal_xor[i].page); in create_journal()
3784 sg_set_buf(&sg[i], &ic->commit_ids, sizeof ic->commit_ids); in create_journal()
3787 PAGE_SIZE * ic->journal_pages + sizeof ic->commit_ids, crypt_iv); in create_journal()
3793 r = dm_integrity_failed(ic); in create_journal()
3798 DEBUG_bytes(lowmem_page_address(ic->journal_xor[0].page), 64, "xor data"); in create_journal()
3800 crypto_free_skcipher(ic->journal_crypt); in create_journal()
3801 ic->journal_crypt = NULL; in create_journal()
3805 req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL); in create_journal()
3826 ic->journal_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal); in create_journal()
3827 if (!ic->journal_scatterlist) { in create_journal()
3832 ic->journal_io_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal_io); in create_journal()
3833 if (!ic->journal_io_scatterlist) { in create_journal()
3838 ic->sk_requests = kvmalloc_array(ic->journal_sections, in create_journal()
3841 if (!ic->sk_requests) { in create_journal()
3846 for (i = 0; i < ic->journal_sections; i++) { in create_journal()
3862 r = dm_integrity_failed(ic); in create_journal()
3868 section_req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL); in create_journal()
3883 section_req->cryptlen = (size_t)ic->journal_section_sectors << SECTOR_SHIFT; in create_journal()
3884 ic->sk_requests[i] = section_req; in create_journal()
3894 if (ic->commit_ids[j] == ic->commit_ids[i]) { in create_journal()
3895 ic->commit_ids[i] = cpu_to_le64(le64_to_cpu(ic->commit_ids[i]) + 1); in create_journal()
3899 DEBUG_print("commit id %u: %016llx\n", i, ic->commit_ids[i]); in create_journal()
3902 journal_tree_size = (__u64)ic->journal_entries * sizeof(struct journal_node); in create_journal()
3908 ic->journal_tree = kvmalloc(journal_tree_size, GFP_KERNEL); in create_journal()
3909 if (!ic->journal_tree) { in create_journal()
3947 struct dm_integrity_c *ic; in dm_integrity_ctr() local
3971 ic = kzalloc(sizeof(struct dm_integrity_c), GFP_KERNEL); in dm_integrity_ctr()
3972 if (!ic) { in dm_integrity_ctr()
3976 ti->private = ic; in dm_integrity_ctr()
3978 ic->ti = ti; in dm_integrity_ctr()
3980 ic->in_progress = RB_ROOT; in dm_integrity_ctr()
3981 INIT_LIST_HEAD(&ic->wait_list); in dm_integrity_ctr()
3982 init_waitqueue_head(&ic->endio_wait); in dm_integrity_ctr()
3983 bio_list_init(&ic->flush_bio_list); in dm_integrity_ctr()
3984 init_waitqueue_head(&ic->copy_to_journal_wait); in dm_integrity_ctr()
3985 init_completion(&ic->crypto_backoff); in dm_integrity_ctr()
3986 atomic64_set(&ic->number_of_mismatches, 0); in dm_integrity_ctr()
3987 ic->bitmap_flush_interval = BITMAP_FLUSH_INTERVAL; in dm_integrity_ctr()
3989 r = dm_get_device(ti, argv[0], dm_table_get_mode(ti->table), &ic->dev); in dm_integrity_ctr()
4000 ic->start = start; in dm_integrity_ctr()
4003 if (sscanf(argv[2], "%u%c", &ic->tag_size, &dummy) != 1 || !ic->tag_size) { in dm_integrity_ctr()
4012 ic->mode = argv[3][0]; in dm_integrity_ctr()
4024 ic->sectors_per_block = 1; in dm_integrity_ctr()
4053 if (ic->meta_dev) { in dm_integrity_ctr()
4054 dm_put_device(ti, ic->meta_dev); in dm_integrity_ctr()
4055 ic->meta_dev = NULL; in dm_integrity_ctr()
4058 dm_table_get_mode(ti->table), &ic->meta_dev); in dm_integrity_ctr()
4071 ic->sectors_per_block = val >> SECTOR_SHIFT; in dm_integrity_ctr()
4080 ic->bitmap_flush_interval = msecs_to_jiffies(val); in dm_integrity_ctr()
4082 r = get_alg_and_key(opt_string, &ic->internal_hash_alg, &ti->error, in dm_integrity_ctr()
4087 r = get_alg_and_key(opt_string, &ic->journal_crypt_alg, &ti->error, in dm_integrity_ctr()
4092 r = get_alg_and_key(opt_string, &ic->journal_mac_alg, &ti->error, in dm_integrity_ctr()
4097 ic->recalculate_flag = true; in dm_integrity_ctr()
4099 ic->recalculate_flag = true; in dm_integrity_ctr()
4100 ic->reset_recalculate_flag = true; in dm_integrity_ctr()
4102 ic->discard = true; in dm_integrity_ctr()
4104 ic->fix_padding = true; in dm_integrity_ctr()
4106 ic->fix_hmac = true; in dm_integrity_ctr()
4108 ic->legacy_recalculate = true; in dm_integrity_ctr()
4116 ic->data_device_sectors = i_size_read(ic->dev->bdev->bd_inode) >> SECTOR_SHIFT; in dm_integrity_ctr()
4117 if (!ic->meta_dev) in dm_integrity_ctr()
4118 ic->meta_device_sectors = ic->data_device_sectors; in dm_integrity_ctr()
4120 ic->meta_device_sectors = i_size_read(ic->meta_dev->bdev->bd_inode) >> SECTOR_SHIFT; in dm_integrity_ctr()
4124 ic->data_device_sectors >> DEFAULT_JOURNAL_SIZE_FACTOR); in dm_integrity_ctr()
4129 ic->log2_buffer_sectors = min((int)__fls(buffer_sectors), 31 - SECTOR_SHIFT); in dm_integrity_ctr()
4131 r = get_mac(&ic->internal_hash, &ic->internal_hash_alg, &ti->error, in dm_integrity_ctr()
4136 r = get_mac(&ic->journal_mac, &ic->journal_mac_alg, &ti->error, in dm_integrity_ctr()
4141 if (!ic->tag_size) { in dm_integrity_ctr()
4142 if (!ic->internal_hash) { in dm_integrity_ctr()
4147 ic->tag_size = crypto_shash_digestsize(ic->internal_hash); in dm_integrity_ctr()
4149 if (ic->tag_size > MAX_TAG_SIZE) { in dm_integrity_ctr()
4154 if (!(ic->tag_size & (ic->tag_size - 1))) in dm_integrity_ctr()
4155 ic->log2_tag_size = __ffs(ic->tag_size); in dm_integrity_ctr()
4157 ic->log2_tag_size = -1; in dm_integrity_ctr()
4159 if (ic->mode == 'B' && !ic->internal_hash) { in dm_integrity_ctr()
4165 if (ic->discard && !ic->internal_hash) { in dm_integrity_ctr()
4171 ic->autocommit_jiffies = msecs_to_jiffies(sync_msec); in dm_integrity_ctr()
4172 ic->autocommit_msec = sync_msec; in dm_integrity_ctr()
4173 timer_setup(&ic->autocommit_timer, autocommit_fn, 0); in dm_integrity_ctr()
4175 ic->io = dm_io_client_create(); in dm_integrity_ctr()
4176 if (IS_ERR(ic->io)) { in dm_integrity_ctr()
4177 r = PTR_ERR(ic->io); in dm_integrity_ctr()
4178 ic->io = NULL; in dm_integrity_ctr()
4183 r = mempool_init_slab_pool(&ic->journal_io_mempool, JOURNAL_IO_MEMPOOL, journal_io_cache); in dm_integrity_ctr()
4189 ic->metadata_wq = alloc_workqueue("dm-integrity-metadata", in dm_integrity_ctr()
4191 if (!ic->metadata_wq) { in dm_integrity_ctr()
4201 ic->wait_wq = alloc_workqueue("dm-integrity-wait", WQ_MEM_RECLAIM | WQ_UNBOUND, 1); in dm_integrity_ctr()
4202 if (!ic->wait_wq) { in dm_integrity_ctr()
4208 ic->offload_wq = alloc_workqueue("dm-integrity-offload", WQ_MEM_RECLAIM, in dm_integrity_ctr()
4210 if (!ic->offload_wq) { in dm_integrity_ctr()
4216 ic->commit_wq = alloc_workqueue("dm-integrity-commit", WQ_MEM_RECLAIM, 1); in dm_integrity_ctr()
4217 if (!ic->commit_wq) { in dm_integrity_ctr()
4222 INIT_WORK(&ic->commit_work, integrity_commit); in dm_integrity_ctr()
4224 if (ic->mode == 'J' || ic->mode == 'B') { in dm_integrity_ctr()
4225 ic->writer_wq = alloc_workqueue("dm-integrity-writer", WQ_MEM_RECLAIM, 1); in dm_integrity_ctr()
4226 if (!ic->writer_wq) { in dm_integrity_ctr()
4231 INIT_WORK(&ic->writer_work, integrity_writer); in dm_integrity_ctr()
4234 ic->sb = alloc_pages_exact(SB_SECTORS << SECTOR_SHIFT, GFP_KERNEL); in dm_integrity_ctr()
4235 if (!ic->sb) { in dm_integrity_ctr()
4241 r = sync_rw_sb(ic, REQ_OP_READ, 0); in dm_integrity_ctr()
4247 if (memcmp(ic->sb->magic, SB_MAGIC, 8)) { in dm_integrity_ctr()
4248 if (ic->mode != 'R') { in dm_integrity_ctr()
4249 if (memchr_inv(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT)) { in dm_integrity_ctr()
4256 r = initialize_superblock(ic, journal_sectors, interleave_sectors); in dm_integrity_ctr()
4261 if (ic->mode != 'R') in dm_integrity_ctr()
4265 if (!ic->sb->version || ic->sb->version > SB_VERSION_5) { in dm_integrity_ctr()
4270 if (le16_to_cpu(ic->sb->integrity_tag_size) != ic->tag_size) { in dm_integrity_ctr()
4275 if (ic->sb->log2_sectors_per_block != __ffs(ic->sectors_per_block)) { in dm_integrity_ctr()
4280 if (!le32_to_cpu(ic->sb->journal_sections)) { in dm_integrity_ctr()
4286 if (!ic->meta_dev) { in dm_integrity_ctr()
4287 if (ic->sb->log2_interleave_sectors < MIN_LOG2_INTERLEAVE_SECTORS || in dm_integrity_ctr()
4288 ic->sb->log2_interleave_sectors > MAX_LOG2_INTERLEAVE_SECTORS) { in dm_integrity_ctr()
4294 if (ic->sb->log2_interleave_sectors) { in dm_integrity_ctr()
4300 …if (!!(ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC)) != !!ic->journal_mac_alg.alg_string)… in dm_integrity_ctr()
4306 get_provided_data_sectors(ic); in dm_integrity_ctr()
4307 if (!ic->provided_data_sectors) { in dm_integrity_ctr()
4314 r = calculate_device_limits(ic); in dm_integrity_ctr()
4316 if (ic->meta_dev) { in dm_integrity_ctr()
4317 if (ic->log2_buffer_sectors > 3) { in dm_integrity_ctr()
4318 ic->log2_buffer_sectors--; in dm_integrity_ctr()
4328 if (log2_sectors_per_bitmap_bit < ic->sb->log2_sectors_per_block) in dm_integrity_ctr()
4329 log2_sectors_per_bitmap_bit = ic->sb->log2_sectors_per_block; in dm_integrity_ctr()
4331 …bits_in_journal = ((__u64)ic->journal_section_sectors * ic->journal_sections) << (SECTOR_SHIFT + 3… in dm_integrity_ctr()
4334 …while (bits_in_journal < (ic->provided_data_sectors + ((sector_t)1 << log2_sectors_per_bitmap_bit)… in dm_integrity_ctr()
4337 log2_blocks_per_bitmap_bit = log2_sectors_per_bitmap_bit - ic->sb->log2_sectors_per_block; in dm_integrity_ctr()
4338 ic->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit; in dm_integrity_ctr()
4340 ic->sb->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit; in dm_integrity_ctr()
4342 n_bitmap_bits = ((ic->provided_data_sectors >> ic->sb->log2_sectors_per_block) in dm_integrity_ctr()
4344 ic->n_bitmap_blocks = DIV_ROUND_UP(n_bitmap_bits, BITMAP_BLOCK_SIZE * 8); in dm_integrity_ctr()
4346 if (!ic->meta_dev) in dm_integrity_ctr()
4347 ic->log2_buffer_sectors = min(ic->log2_buffer_sectors, (__u8)__ffs(ic->metadata_run)); in dm_integrity_ctr()
4349 if (ti->len > ic->provided_data_sectors) { in dm_integrity_ctr()
4356 threshold = (__u64)ic->journal_entries * (100 - journal_watermark); in dm_integrity_ctr()
4359 ic->free_sectors_threshold = threshold; in dm_integrity_ctr()
4362 DEBUG_print(" integrity_tag_size %u\n", le16_to_cpu(ic->sb->integrity_tag_size)); in dm_integrity_ctr()
4363 DEBUG_print(" journal_entry_size %u\n", ic->journal_entry_size); in dm_integrity_ctr()
4364 DEBUG_print(" journal_entries_per_sector %u\n", ic->journal_entries_per_sector); in dm_integrity_ctr()
4365 DEBUG_print(" journal_section_entries %u\n", ic->journal_section_entries); in dm_integrity_ctr()
4366 DEBUG_print(" journal_section_sectors %u\n", ic->journal_section_sectors); in dm_integrity_ctr()
4367 DEBUG_print(" journal_sections %u\n", (unsigned)le32_to_cpu(ic->sb->journal_sections)); in dm_integrity_ctr()
4368 DEBUG_print(" journal_entries %u\n", ic->journal_entries); in dm_integrity_ctr()
4369 DEBUG_print(" log2_interleave_sectors %d\n", ic->sb->log2_interleave_sectors); in dm_integrity_ctr()
4370 DEBUG_print(" data_device_sectors 0x%llx\n", i_size_read(ic->dev->bdev->bd_inode) >> SECTOR_SHIFT); in dm_integrity_ctr()
4371 DEBUG_print(" initial_sectors 0x%x\n", ic->initial_sectors); in dm_integrity_ctr()
4372 DEBUG_print(" metadata_run 0x%x\n", ic->metadata_run); in dm_integrity_ctr()
4373 DEBUG_print(" log2_metadata_run %d\n", ic->log2_metadata_run); in dm_integrity_ctr()
4374 …DEBUG_print(" provided_data_sectors 0x%llx (%llu)\n", ic->provided_data_sectors, ic->provided_data… in dm_integrity_ctr()
4375 DEBUG_print(" log2_buffer_sectors %u\n", ic->log2_buffer_sectors); in dm_integrity_ctr()
4378 if (ic->recalculate_flag && !(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))) { in dm_integrity_ctr()
4379 ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING); in dm_integrity_ctr()
4380 ic->sb->recalc_sector = cpu_to_le64(0); in dm_integrity_ctr()
4383 if (ic->internal_hash) { in dm_integrity_ctr()
4384 ic->recalc_wq = alloc_workqueue("dm-integrity-recalc", WQ_MEM_RECLAIM, 1); in dm_integrity_ctr()
4385 if (!ic->recalc_wq ) { in dm_integrity_ctr()
4390 INIT_WORK(&ic->recalc_work, integrity_recalc); in dm_integrity_ctr()
4391 ic->recalc_buffer = vmalloc(RECALC_SECTORS << SECTOR_SHIFT); in dm_integrity_ctr()
4392 if (!ic->recalc_buffer) { in dm_integrity_ctr()
4397 ic->recalc_tags = kvmalloc_array(RECALC_SECTORS >> ic->sb->log2_sectors_per_block, in dm_integrity_ctr()
4398 ic->tag_size, GFP_KERNEL); in dm_integrity_ctr()
4399 if (!ic->recalc_tags) { in dm_integrity_ctr()
4405 if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) { in dm_integrity_ctr()
4412 if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) && in dm_integrity_ctr()
4413 le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors && in dm_integrity_ctr()
4414 dm_integrity_disable_recalculate(ic)) { in dm_integrity_ctr()
4420 ic->bufio = dm_bufio_client_create(ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev, in dm_integrity_ctr()
4421 1U << (SECTOR_SHIFT + ic->log2_buffer_sectors), 1, 0, NULL, NULL); in dm_integrity_ctr()
4422 if (IS_ERR(ic->bufio)) { in dm_integrity_ctr()
4423 r = PTR_ERR(ic->bufio); in dm_integrity_ctr()
4425 ic->bufio = NULL; in dm_integrity_ctr()
4428 dm_bufio_set_sector_offset(ic->bufio, ic->start + ic->initial_sectors); in dm_integrity_ctr()
4430 if (ic->mode != 'R') { in dm_integrity_ctr()
4431 r = create_journal(ic, &ti->error); in dm_integrity_ctr()
4437 if (ic->mode == 'B') { in dm_integrity_ctr()
4439 unsigned n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE); in dm_integrity_ctr()
4441 ic->recalc_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages); in dm_integrity_ctr()
4442 if (!ic->recalc_bitmap) { in dm_integrity_ctr()
4446 ic->may_write_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages); in dm_integrity_ctr()
4447 if (!ic->may_write_bitmap) { in dm_integrity_ctr()
4451 ic->bbs = kvmalloc_array(ic->n_bitmap_blocks, sizeof(struct bitmap_block_status), GFP_KERNEL); in dm_integrity_ctr()
4452 if (!ic->bbs) { in dm_integrity_ctr()
4456 INIT_DELAYED_WORK(&ic->bitmap_flush_work, bitmap_flush_work); in dm_integrity_ctr()
4457 for (i = 0; i < ic->n_bitmap_blocks; i++) { in dm_integrity_ctr()
4458 struct bitmap_block_status *bbs = &ic->bbs[i]; in dm_integrity_ctr()
4462 bbs->ic = ic; in dm_integrity_ctr()
4471 bbs->bitmap = lowmem_page_address(ic->journal[pl_index].page) + pl_offset; in dm_integrity_ctr()
4478 init_journal(ic, 0, ic->journal_sections, 0); in dm_integrity_ctr()
4479 r = dm_integrity_failed(ic); in dm_integrity_ctr()
4484 r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA); in dm_integrity_ctr()
4489 ic->just_formatted = true; in dm_integrity_ctr()
4492 if (!ic->meta_dev) { in dm_integrity_ctr()
4493 r = dm_set_target_max_io_len(ti, 1U << ic->sb->log2_interleave_sectors); in dm_integrity_ctr()
4497 if (ic->mode == 'B') { in dm_integrity_ctr()
4498 …unsigned max_io_len = ((sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit) * (BITMA… in dm_integrity_ctr()
4509 if (!ic->internal_hash) in dm_integrity_ctr()
4510 dm_integrity_set(ti, ic); in dm_integrity_ctr()
4514 if (ic->discard) in dm_integrity_ctr()
4526 struct dm_integrity_c *ic = ti->private; in dm_integrity_dtr() local
4528 BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress)); in dm_integrity_dtr()
4529 BUG_ON(!list_empty(&ic->wait_list)); in dm_integrity_dtr()
4531 if (ic->metadata_wq) in dm_integrity_dtr()
4532 destroy_workqueue(ic->metadata_wq); in dm_integrity_dtr()
4533 if (ic->wait_wq) in dm_integrity_dtr()
4534 destroy_workqueue(ic->wait_wq); in dm_integrity_dtr()
4535 if (ic->offload_wq) in dm_integrity_dtr()
4536 destroy_workqueue(ic->offload_wq); in dm_integrity_dtr()
4537 if (ic->commit_wq) in dm_integrity_dtr()
4538 destroy_workqueue(ic->commit_wq); in dm_integrity_dtr()
4539 if (ic->writer_wq) in dm_integrity_dtr()
4540 destroy_workqueue(ic->writer_wq); in dm_integrity_dtr()
4541 if (ic->recalc_wq) in dm_integrity_dtr()
4542 destroy_workqueue(ic->recalc_wq); in dm_integrity_dtr()
4543 vfree(ic->recalc_buffer); in dm_integrity_dtr()
4544 kvfree(ic->recalc_tags); in dm_integrity_dtr()
4545 kvfree(ic->bbs); in dm_integrity_dtr()
4546 if (ic->bufio) in dm_integrity_dtr()
4547 dm_bufio_client_destroy(ic->bufio); in dm_integrity_dtr()
4548 mempool_exit(&ic->journal_io_mempool); in dm_integrity_dtr()
4549 if (ic->io) in dm_integrity_dtr()
4550 dm_io_client_destroy(ic->io); in dm_integrity_dtr()
4551 if (ic->dev) in dm_integrity_dtr()
4552 dm_put_device(ti, ic->dev); in dm_integrity_dtr()
4553 if (ic->meta_dev) in dm_integrity_dtr()
4554 dm_put_device(ti, ic->meta_dev); in dm_integrity_dtr()
4555 dm_integrity_free_page_list(ic->journal); in dm_integrity_dtr()
4556 dm_integrity_free_page_list(ic->journal_io); in dm_integrity_dtr()
4557 dm_integrity_free_page_list(ic->journal_xor); in dm_integrity_dtr()
4558 dm_integrity_free_page_list(ic->recalc_bitmap); in dm_integrity_dtr()
4559 dm_integrity_free_page_list(ic->may_write_bitmap); in dm_integrity_dtr()
4560 if (ic->journal_scatterlist) in dm_integrity_dtr()
4561 dm_integrity_free_journal_scatterlist(ic, ic->journal_scatterlist); in dm_integrity_dtr()
4562 if (ic->journal_io_scatterlist) in dm_integrity_dtr()
4563 dm_integrity_free_journal_scatterlist(ic, ic->journal_io_scatterlist); in dm_integrity_dtr()
4564 if (ic->sk_requests) { in dm_integrity_dtr()
4567 for (i = 0; i < ic->journal_sections; i++) { in dm_integrity_dtr()
4568 struct skcipher_request *req = ic->sk_requests[i]; in dm_integrity_dtr()
4574 kvfree(ic->sk_requests); in dm_integrity_dtr()
4576 kvfree(ic->journal_tree); in dm_integrity_dtr()
4577 if (ic->sb) in dm_integrity_dtr()
4578 free_pages_exact(ic->sb, SB_SECTORS << SECTOR_SHIFT); in dm_integrity_dtr()
4580 if (ic->internal_hash) in dm_integrity_dtr()
4581 crypto_free_shash(ic->internal_hash); in dm_integrity_dtr()
4582 free_alg(&ic->internal_hash_alg); in dm_integrity_dtr()
4584 if (ic->journal_crypt) in dm_integrity_dtr()
4585 crypto_free_skcipher(ic->journal_crypt); in dm_integrity_dtr()
4586 free_alg(&ic->journal_crypt_alg); in dm_integrity_dtr()
4588 if (ic->journal_mac) in dm_integrity_dtr()
4589 crypto_free_shash(ic->journal_mac); in dm_integrity_dtr()
4590 free_alg(&ic->journal_mac_alg); in dm_integrity_dtr()
4592 kfree(ic); in dm_integrity_dtr()