107 #define journal_entry_tag(ic, je)		((__u8 *)&(je)->last_bytes[(ic)->sectors_per_block])  argument
302 	struct dm_integrity_c *ic;  member
320 	struct dm_integrity_c *ic;  member
332 	struct dm_integrity_c *ic;  member
376 static void dm_integrity_io_error(struct dm_integrity_c *ic, const char *msg, int err)  in dm_integrity_io_error()  argument
379 		atomic64_inc(&ic->number_of_mismatches);  in dm_integrity_io_error()
380 	if (!cmpxchg(&ic->failed, 0, err))  in dm_integrity_io_error()
384 static int dm_integrity_failed(struct dm_integrity_c *ic)  in dm_integrity_failed()  argument
386 	return READ_ONCE(ic->failed);  in dm_integrity_failed()
389 static bool dm_integrity_disable_recalculate(struct dm_integrity_c *ic)  in dm_integrity_disable_recalculate()  argument
391 	if (ic->legacy_recalculate)  in dm_integrity_disable_recalculate()
393 	if (!(ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) ?  in dm_integrity_disable_recalculate()
394 	    ic->internal_hash_alg.key || ic->journal_mac_alg.key :  in dm_integrity_disable_recalculate()
395 	    ic->internal_hash_alg.key && !ic->journal_mac_alg.key)  in dm_integrity_disable_recalculate()
400 static commit_id_t dm_integrity_commit_id(struct dm_integrity_c *ic, unsigned int i,  in dm_integrity_commit_id()  argument
407 	return ic->commit_ids[seq] ^ cpu_to_le64(((__u64)i << 32) ^ j);  in dm_integrity_commit_id()
410 static void get_area_and_offset(struct dm_integrity_c *ic, sector_t data_sector,  in get_area_and_offset()  argument
413 	if (!ic->meta_dev) {  in get_area_and_offset()
414 		__u8 log2_interleave_sectors = ic->sb->log2_interleave_sectors;  in get_area_and_offset()
423 #define sector_to_block(ic, n)						\  argument
425 	BUG_ON((n) & (unsigned int)((ic)->sectors_per_block - 1));		\
426 	(n) >>= (ic)->sb->log2_sectors_per_block;			\
429 static __u64 get_metadata_sector_and_offset(struct dm_integrity_c *ic, sector_t area,  in get_metadata_sector_and_offset()  argument
435 	ms = area << ic->sb->log2_interleave_sectors;  in get_metadata_sector_and_offset()
436 	if (likely(ic->log2_metadata_run >= 0))  in get_metadata_sector_and_offset()
437 		ms += area << ic->log2_metadata_run;  in get_metadata_sector_and_offset()
439 		ms += area * ic->metadata_run;  in get_metadata_sector_and_offset()
440 	ms >>= ic->log2_buffer_sectors;  in get_metadata_sector_and_offset()
442 	sector_to_block(ic, offset);  in get_metadata_sector_and_offset()
444 	if (likely(ic->log2_tag_size >= 0)) {  in get_metadata_sector_and_offset()
445 		ms += offset >> (SECTOR_SHIFT + ic->log2_buffer_sectors - ic->log2_tag_size);  in get_metadata_sector_and_offset()
446 		mo = (offset << ic->log2_tag_size) & ((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - 1);  in get_metadata_sector_and_offset()
448 		ms += (__u64)offset * ic->tag_size >> (SECTOR_SHIFT + ic->log2_buffer_sectors);  in get_metadata_sector_and_offset()
449 		mo = (offset * ic->tag_size) & ((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - 1);  in get_metadata_sector_and_offset()
455 static sector_t get_data_sector(struct dm_integrity_c *ic, sector_t area, sector_t offset)  in get_data_sector()  argument
459 	if (ic->meta_dev)  in get_data_sector()
462 	result = area << ic->sb->log2_interleave_sectors;  in get_data_sector()
463 	if (likely(ic->log2_metadata_run >= 0))  in get_data_sector()
464 		result += (area + 1) << ic->log2_metadata_run;  in get_data_sector()
466 		result += (area + 1) * ic->metadata_run;  in get_data_sector()
468 	result += (sector_t)ic->initial_sectors + offset;  in get_data_sector()
469 	result += ic->start;  in get_data_sector()
474 static void wraparound_section(struct dm_integrity_c *ic, unsigned int *sec_ptr)  in wraparound_section()  argument
476 	if (unlikely(*sec_ptr >= ic->journal_sections))  in wraparound_section()
477 		*sec_ptr -= ic->journal_sections;  in wraparound_section()
480 static void sb_set_version(struct dm_integrity_c *ic)  in sb_set_version()  argument
482 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC))  in sb_set_version()
483 		ic->sb->version = SB_VERSION_5;  in sb_set_version()
484 	else if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING))  in sb_set_version()
485 		ic->sb->version = SB_VERSION_4;  in sb_set_version()
486 	else if (ic->mode == 'B' || ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP))  in sb_set_version()
487 		ic->sb->version = SB_VERSION_3;  in sb_set_version()
488 	else if (ic->meta_dev || ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in sb_set_version()
489 		ic->sb->version = SB_VERSION_2;  in sb_set_version()
491 		ic->sb->version = SB_VERSION_1;  in sb_set_version()
494 static int sb_mac(struct dm_integrity_c *ic, bool wr)  in sb_mac()  argument
496 	SHASH_DESC_ON_STACK(desc, ic->journal_mac);  in sb_mac()
498 	unsigned int mac_size = crypto_shash_digestsize(ic->journal_mac);  in sb_mac()
499 	__u8 *sb = (__u8 *)ic->sb;  in sb_mac()
503 		dm_integrity_io_error(ic, "digest is too long", -EINVAL);  in sb_mac()
507 	desc->tfm = ic->journal_mac;  in sb_mac()
512 			dm_integrity_io_error(ic, "crypto_shash_digest", r);  in sb_mac()
520 			dm_integrity_io_error(ic, "crypto_shash_digest", r);  in sb_mac()
524 			dm_integrity_io_error(ic, "superblock mac", -EILSEQ);  in sb_mac()
525 			dm_audit_log_target(DM_MSG_PREFIX, "mac-superblock", ic->ti, 0);  in sb_mac()
533 static int sync_rw_sb(struct dm_integrity_c *ic, blk_opf_t opf)  in sync_rw_sb()  argument
542 	io_req.mem.ptr.addr = ic->sb;  in sync_rw_sb()
544 	io_req.client = ic->io;  in sync_rw_sb()
545 	io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev;  in sync_rw_sb()
546 	io_loc.sector = ic->start;  in sync_rw_sb()
550 		sb_set_version(ic);  in sync_rw_sb()
551 		if (ic->journal_mac && ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in sync_rw_sb()
552 			r = sb_mac(ic, true);  in sync_rw_sb()
563 		if (ic->mode != 'R' && ic->journal_mac && ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in sync_rw_sb()
564 			r = sb_mac(ic, false);  in sync_rw_sb()
578 static bool block_bitmap_op(struct dm_integrity_c *ic, struct page_list *bitmap,  in block_bitmap_op()  argument
584 	if (unlikely(((sector | n_sectors) & ((1 << ic->sb->log2_sectors_per_block) - 1)) != 0)) {  in block_bitmap_op()
588 			ic->sb->log2_sectors_per_block,  in block_bitmap_op()
589 			ic->log2_blocks_per_bitmap_bit,  in block_bitmap_op()
597 	bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in block_bitmap_op()
599 		(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in block_bitmap_op()
684 static void block_bitmap_copy(struct dm_integrity_c *ic, struct page_list *dst, struct page_list *s…  in block_bitmap_copy()  argument
686 	unsigned int n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE);  in block_bitmap_copy()
697 static struct bitmap_block_status *sector_to_bitmap_block(struct dm_integrity_c *ic, sector_t secto…  in sector_to_bitmap_block()  argument
699 	unsigned int bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in sector_to_bitmap_block()
702 	BUG_ON(bitmap_block >= ic->n_bitmap_blocks);  in sector_to_bitmap_block()
703 	return &ic->bbs[bitmap_block];  in sector_to_bitmap_block()
706 static void access_journal_check(struct dm_integrity_c *ic, unsigned int section, unsigned int offs…  in access_journal_check()  argument
710 	unsigned int limit = e ? ic->journal_section_entries : ic->journal_section_sectors;  in access_journal_check()
712 	if (unlikely(section >= ic->journal_sections) ||  in access_journal_check()
715 		       function, section, offset, ic->journal_sections, limit);  in access_journal_check()
721 static void page_list_location(struct dm_integrity_c *ic, unsigned int section, unsigned int offset,  in page_list_location()  argument
726 	access_journal_check(ic, section, offset, false, "page_list_location");  in page_list_location()
728 	sector = section * ic->journal_section_sectors + offset;  in page_list_location()
734 static struct journal_sector *access_page_list(struct dm_integrity_c *ic, struct page_list *pl,  in access_page_list()  argument
740 	page_list_location(ic, section, offset, &pl_index, &pl_offset);  in access_page_list()
750 static struct journal_sector *access_journal(struct dm_integrity_c *ic, unsigned int section, unsig…  in access_journal()  argument
752 	return access_page_list(ic, ic->journal, section, offset, NULL);  in access_journal()
755 static struct journal_entry *access_journal_entry(struct dm_integrity_c *ic, unsigned int section, …  in access_journal_entry()  argument
760 	access_journal_check(ic, section, n, true, "access_journal_entry");  in access_journal_entry()
765 	js = access_journal(ic, section, rel_sector);  in access_journal_entry()
766 	return (struct journal_entry *)((char *)js + offset * ic->journal_entry_size);  in access_journal_entry()
769 static struct journal_sector *access_journal_data(struct dm_integrity_c *ic, unsigned int section, …  in access_journal_data()  argument
771 	n <<= ic->sb->log2_sectors_per_block;  in access_journal_data()
775 	access_journal_check(ic, section, n, false, "access_journal_data");  in access_journal_data()
777 	return access_journal(ic, section, n);  in access_journal_data()
780 static void section_mac(struct dm_integrity_c *ic, unsigned int section, __u8 result[JOURNAL_MAC_SI…  in section_mac()  argument
782 	SHASH_DESC_ON_STACK(desc, ic->journal_mac);  in section_mac()
786 	desc->tfm = ic->journal_mac;  in section_mac()
790 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in section_mac()
794 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in section_mac()
797 		r = crypto_shash_update(desc, (__u8 *)&ic->sb->salt, SALT_SIZE);  in section_mac()
799 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
806 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
811 	for (j = 0; j < ic->journal_section_entries; j++) {  in section_mac()
812 		struct journal_entry *je = access_journal_entry(ic, section, j);  in section_mac()
816 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
821 	size = crypto_shash_digestsize(ic->journal_mac);  in section_mac()
826 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in section_mac()
834 			dm_integrity_io_error(ic, "digest_size", -EINVAL);  in section_mac()
839 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in section_mac()
850 static void rw_section_mac(struct dm_integrity_c *ic, unsigned int section, bool wr)  in rw_section_mac()  argument
855 	if (!ic->journal_mac)  in rw_section_mac()
858 	section_mac(ic, section, result);  in rw_section_mac()
861 		struct journal_sector *js = access_journal(ic, section, j);  in rw_section_mac()
867 				dm_integrity_io_error(ic, "journal mac", -EILSEQ);  in rw_section_mac()
868 				dm_audit_log_target(DM_MSG_PREFIX, "mac-journal", ic->ti, 0);  in rw_section_mac()
883 static void xor_journal(struct dm_integrity_c *ic, bool encrypt, unsigned int section,  in xor_journal()  argument
887 	size_t n_bytes = (size_t)(n_sections * ic->journal_section_sectors) << SECTOR_SHIFT;  in xor_journal()
892 		source_pl = ic->journal;  in xor_journal()
893 		target_pl = ic->journal_io;  in xor_journal()
895 		source_pl = ic->journal_io;  in xor_journal()
896 		target_pl = ic->journal;  in xor_journal()
899 	page_list_location(ic, section, 0, &pl_index, &pl_offset);  in xor_journal()
916 				rw_section_mac(ic, section, true);  in xor_journal()
921 			page_list_location(ic, section, 0, &section_index, &dummy);  in xor_journal()
927 		src_pages[1] = ic->journal_xor[pl_index].page;  in xor_journal()
947 			complete(&comp->ic->crypto_backoff);  in complete_journal_encrypt()
950 		dm_integrity_io_error(comp->ic, "asynchronous encrypt", err);  in complete_journal_encrypt()
970 		wait_for_completion(&comp->ic->crypto_backoff);  in do_crypt()
971 		reinit_completion(&comp->ic->crypto_backoff);  in do_crypt()
974 	dm_integrity_io_error(comp->ic, "encrypt", r);  in do_crypt()
978 static void crypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned int section,  in crypt_journal()  argument
987 		source_sg = ic->journal_scatterlist;  in crypt_journal()
988 		target_sg = ic->journal_io_scatterlist;  in crypt_journal()
990 		source_sg = ic->journal_io_scatterlist;  in crypt_journal()
991 		target_sg = ic->journal_scatterlist;  in crypt_journal()
1000 			rw_section_mac(ic, section, true);  in crypt_journal()
1002 		req = ic->sk_requests[section];  in crypt_journal()
1003 		ivsize = crypto_skcipher_ivsize(ic->journal_crypt);  in crypt_journal()
1022 static void encrypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned int section,  in encrypt_journal()  argument
1025 	if (ic->journal_xor)  in encrypt_journal()
1026 		return xor_journal(ic, encrypt, section, n_sections, comp);  in encrypt_journal()
1028 		return crypt_journal(ic, encrypt, section, n_sections, comp);  in encrypt_journal()
1036 		dm_integrity_io_error(comp->ic, "writing journal", -EIO);  in complete_journal_io()
1040 static void rw_journal_sectors(struct dm_integrity_c *ic, blk_opf_t opf,  in rw_journal_sectors()  argument
1049 	if (unlikely(dm_integrity_failed(ic))) {  in rw_journal_sectors()
1060 	if (ic->journal_io)  in rw_journal_sectors()
1061 		io_req.mem.ptr.pl = &ic->journal_io[pl_index];  in rw_journal_sectors()
1063 		io_req.mem.ptr.pl = &ic->journal[pl_index];  in rw_journal_sectors()
1071 	io_req.client = ic->io;  in rw_journal_sectors()
1072 	io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev;  in rw_journal_sectors()
1073 	io_loc.sector = ic->start + SB_SECTORS + sector;  in rw_journal_sectors()
1078 		dm_integrity_io_error(ic, (opf & REQ_OP_MASK) == REQ_OP_READ ?  in rw_journal_sectors()
1087 static void rw_journal(struct dm_integrity_c *ic, blk_opf_t opf,  in rw_journal()  argument
1093 	sector = section * ic->journal_section_sectors;  in rw_journal()
1094 	n_sectors = n_sections * ic->journal_section_sectors;  in rw_journal()
1096 	rw_journal_sectors(ic, opf, sector, n_sectors, comp);  in rw_journal()
1099 static void write_journal(struct dm_integrity_c *ic, unsigned int commit_start, unsigned int commit…  in write_journal()  argument
1106 	io_comp.ic = ic;  in write_journal()
1109 	if (commit_start + commit_sections <= ic->journal_sections) {  in write_journal()
1111 		if (ic->journal_io) {  in write_journal()
1112 			crypt_comp_1.ic = ic;  in write_journal()
1115 			encrypt_journal(ic, true, commit_start, commit_sections, &crypt_comp_1);  in write_journal()
1119 				rw_section_mac(ic, commit_start + i, true);  in write_journal()
1121 		rw_journal(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, commit_start,  in write_journal()
1127 		to_end = ic->journal_sections - commit_start;  in write_journal()
1128 		if (ic->journal_io) {  in write_journal()
1129 			crypt_comp_1.ic = ic;  in write_journal()
1132 			encrypt_journal(ic, true, commit_start, to_end, &crypt_comp_1);  in write_journal()
1134 				rw_journal(ic, REQ_OP_WRITE | REQ_FUA,  in write_journal()
1138 				encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_1);  in write_journal()
1141 				crypt_comp_2.ic = ic;  in write_journal()
1144 				encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_2);  in write_journal()
1146 				rw_journal(ic, REQ_OP_WRITE | REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1151 				rw_section_mac(ic, commit_start + i, true);  in write_journal()
1152 			rw_journal(ic, REQ_OP_WRITE | REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1154 				rw_section_mac(ic, i, true);  in write_journal()
1156 		rw_journal(ic, REQ_OP_WRITE | REQ_FUA, 0, commit_sections - to_end, &io_comp);  in write_journal()
1162 static void copy_from_journal(struct dm_integrity_c *ic, unsigned int section, unsigned int offset,  in copy_from_journal()  argument
1170 	BUG_ON((target | n_sectors | offset) & (unsigned int)(ic->sectors_per_block - 1));  in copy_from_journal()
1172 	if (unlikely(dm_integrity_failed(ic))) {  in copy_from_journal()
1177 	sector = section * ic->journal_section_sectors + JOURNAL_BLOCK_SECTORS + offset;  in copy_from_journal()
1184 	io_req.mem.ptr.pl = &ic->journal[pl_index];  in copy_from_journal()
1188 	io_req.client = ic->io;  in copy_from_journal()
1189 	io_loc.bdev = ic->dev->bdev;  in copy_from_journal()
1206 static bool add_new_range(struct dm_integrity_c *ic, struct dm_integrity_range *new_range, bool che…  in add_new_range()  argument
1208 	struct rb_node **n = &ic->in_progress.rb_node;  in add_new_range()
1211 …BUG_ON((new_range->logical_sector | new_range->n_sectors) & (unsigned int)(ic->sectors_per_block -…  in add_new_range()
1216 		list_for_each_entry(range, &ic->wait_list, wait_entry) {  in add_new_range()
1237 	rb_insert_color(&new_range->node, &ic->in_progress);  in add_new_range()
1242 static void remove_range_unlocked(struct dm_integrity_c *ic, struct dm_integrity_range *range)  in remove_range_unlocked()  argument
1244 	rb_erase(&range->node, &ic->in_progress);  in remove_range_unlocked()
1245 	while (unlikely(!list_empty(&ic->wait_list))) {  in remove_range_unlocked()
1247 			list_first_entry(&ic->wait_list, struct dm_integrity_range, wait_entry);  in remove_range_unlocked()
1252 		if (!add_new_range(ic, last_range, false)) {  in remove_range_unlocked()
1254 			list_add(&last_range->wait_entry, &ic->wait_list);  in remove_range_unlocked()
1262 static void remove_range(struct dm_integrity_c *ic, struct dm_integrity_range *range)  in remove_range()  argument
1266 	spin_lock_irqsave(&ic->endio_wait.lock, flags);  in remove_range()
1267 	remove_range_unlocked(ic, range);  in remove_range()
1268 	spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in remove_range()
1271 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
1274 	list_add_tail(&new_range->wait_entry, &ic->wait_list);  in wait_and_add_new_range()
1278 		spin_unlock_irq(&ic->endio_wait.lock);  in wait_and_add_new_range()
1280 		spin_lock_irq(&ic->endio_wait.lock);  in wait_and_add_new_range()
1284 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
1286 	if (unlikely(!add_new_range(ic, new_range, true)))  in add_new_range_and_wait()
1287 		wait_and_add_new_range(ic, new_range);  in add_new_range_and_wait()
1296 static void add_journal_node(struct dm_integrity_c *ic, struct journal_node *node, sector_t sector)  in add_journal_node()  argument
1304 	link = &ic->journal_tree_root.rb_node;  in add_journal_node()
1319 	rb_insert_color(&node->node, &ic->journal_tree_root);  in add_journal_node()
1322 static void remove_journal_node(struct dm_integrity_c *ic, struct journal_node *node)  in remove_journal_node()  argument
1325 	rb_erase(&node->node, &ic->journal_tree_root);  in remove_journal_node()
1331 static unsigned int find_journal_node(struct dm_integrity_c *ic, sector_t sector, sector_t *next_se…  in find_journal_node()  argument
1333 	struct rb_node *n = ic->journal_tree_root.rb_node;  in find_journal_node()
1341 			found = j - ic->journal_tree;  in find_journal_node()
1353 static bool test_journal_node(struct dm_integrity_c *ic, unsigned int 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 int)(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 int 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()
1490 	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
1508 	if (!ic->meta_dev)  in dm_integrity_flush_buffers()
1516 		fr.io_req.client = dm_bufio_get_dm_io_client(ic->bufio),  in dm_integrity_flush_buffers()
1517 		fr.io_reg.bdev = ic->dev->bdev,  in dm_integrity_flush_buffers()
1520 		fr.ic = ic;  in dm_integrity_flush_buffers()
1526 	r = dm_bufio_write_dirty_buffers(ic->bufio);  in dm_integrity_flush_buffers()
1528 		dm_integrity_io_error(ic, "writing tags", r);  in dm_integrity_flush_buffers()
1534 static void sleep_on_endio_wait(struct dm_integrity_c *ic)  in sleep_on_endio_wait()  argument
1538 	__add_wait_queue(&ic->endio_wait, &wait);  in sleep_on_endio_wait()
1540 	spin_unlock_irq(&ic->endio_wait.lock);  in sleep_on_endio_wait()
1542 	spin_lock_irq(&ic->endio_wait.lock);  in sleep_on_endio_wait()
1543 	__remove_wait_queue(&ic->endio_wait, &wait);  in sleep_on_endio_wait()
1548 	struct dm_integrity_c *ic = from_timer(ic, t, autocommit_timer);  in autocommit_fn()  local
1550 	if (likely(!dm_integrity_failed(ic)))  in autocommit_fn()
1551 		queue_work(ic->commit_wq, &ic->commit_work);  in autocommit_fn()
1554 static void schedule_autocommit(struct dm_integrity_c *ic)  in schedule_autocommit()  argument
1556 	if (!timer_pending(&ic->autocommit_timer))  in schedule_autocommit()
1557 		mod_timer(&ic->autocommit_timer, jiffies + ic->autocommit_jiffies);  in schedule_autocommit()
1560 static void submit_flush_bio(struct dm_integrity_c *ic, struct dm_integrity_io *dio)  in submit_flush_bio()  argument
1565 	spin_lock_irqsave(&ic->endio_wait.lock, flags);  in submit_flush_bio()
1567 	bio_list_add(&ic->flush_bio_list, bio);  in submit_flush_bio()
1568 	spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in submit_flush_bio()
1570 	queue_work(ic->commit_wq, &ic->commit_work);  in submit_flush_bio()
1573 static void do_endio(struct dm_integrity_c *ic, struct bio *bio)  in do_endio()  argument
1577 	r = dm_integrity_failed(ic);  in do_endio()
1580 	if (unlikely(ic->synchronous_mode) && bio_op(bio) == REQ_OP_WRITE) {  in do_endio()
1583 		spin_lock_irqsave(&ic->endio_wait.lock, flags);  in do_endio()
1584 		bio_list_add(&ic->synchronous_bios, bio);  in do_endio()
1585 		queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in do_endio()
1586 		spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in do_endio()
1592 static void do_endio_flush(struct dm_integrity_c *ic, struct dm_integrity_io *dio)  in do_endio_flush()  argument
1596 	if (unlikely(dio->fua) && likely(!bio->bi_status) && likely(!dm_integrity_failed(ic)))  in do_endio_flush()
1597 		submit_flush_bio(ic, dio);  in do_endio_flush()
1599 		do_endio(ic, bio);  in do_endio_flush()
1605 		struct dm_integrity_c *ic = dio->ic;  in dec_in_flight()  local
1608 		remove_range(ic, &dio->range);  in dec_in_flight()
1611 			schedule_autocommit(ic);  in dec_in_flight()
1620 			queue_work(ic->offload_wq, &dio->work);  in dec_in_flight()
1623 		do_endio_flush(ic, dio);  in dec_in_flight()
1641 static void integrity_sector_checksum(struct dm_integrity_c *ic, sector_t sector,  in integrity_sector_checksum()  argument
1645 	SHASH_DESC_ON_STACK(req, ic->internal_hash);  in integrity_sector_checksum()
1649 	req->tfm = ic->internal_hash;  in integrity_sector_checksum()
1653 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in integrity_sector_checksum()
1657 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in integrity_sector_checksum()
1658 		r = crypto_shash_update(req, (__u8 *)&ic->sb->salt, SALT_SIZE);  in integrity_sector_checksum()
1660 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1667 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1671 	r = crypto_shash_update(req, data, ic->sectors_per_block << SECTOR_SHIFT);  in integrity_sector_checksum()
1673 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1679 		dm_integrity_io_error(ic, "crypto_shash_final", r);  in integrity_sector_checksum()
1683 	digest_size = crypto_shash_digestsize(ic->internal_hash);  in integrity_sector_checksum()
1684 	if (unlikely(digest_size < ic->tag_size))  in integrity_sector_checksum()
1685 		memset(result + digest_size, 0, ic->tag_size - digest_size);  in integrity_sector_checksum()
1691 	get_random_bytes(result, ic->tag_size);  in integrity_sector_checksum()
1697 	struct dm_integrity_c *ic = dio->ic;  in integrity_recheck()  local
1704 	get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in integrity_recheck()
1705 	dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset,  in integrity_recheck()
1707 	sector = get_data_sector(ic, area, offset);  in integrity_recheck()
1710 	page = mempool_alloc(&ic->recheck_pool, GFP_NOIO);  in integrity_recheck()
1725 			io_req.client = ic->io;  in integrity_recheck()
1726 			io_loc.bdev = ic->dev->bdev;  in integrity_recheck()
1728 			io_loc.count = ic->sectors_per_block;  in integrity_recheck()
1736 			integrity_sector_checksum(ic, logical_sector, buffer, checksum);  in integrity_recheck()
1737 			r = dm_integrity_rw_tag(ic, checksum, &dio->metadata_block,  in integrity_recheck()
1738 						&dio->metadata_offset, ic->tag_size, TAG_CMP);  in integrity_recheck()
1743 					atomic64_inc(&ic->number_of_mismatches);  in integrity_recheck()
1753 			memcpy(mem + pos, buffer, ic->sectors_per_block << SECTOR_SHIFT);  in integrity_recheck()
1756 			pos += ic->sectors_per_block << SECTOR_SHIFT;  in integrity_recheck()
1757 			sector += ic->sectors_per_block;  in integrity_recheck()
1758 			logical_sector += ic->sectors_per_block;  in integrity_recheck()
1762 	mempool_free(page, &ic->recheck_pool);  in integrity_recheck()
1768 	struct dm_integrity_c *ic = dio->ic;  in integrity_metadata()  local
1772 	if (ic->internal_hash) {  in integrity_metadata()
1775 		unsigned int digest_size = crypto_shash_digestsize(ic->internal_hash);  in integrity_metadata()
1778 		unsigned int extra_space = unlikely(digest_size > ic->tag_size) ? digest_size - ic->tag_size : 0;  in integrity_metadata()
1783 		if (unlikely(ic->mode == 'R'))  in integrity_metadata()
1787 …checksums = kmalloc((PAGE_SIZE >> SECTOR_SHIFT >> ic->sb->log2_sectors_per_block) * ic->tag_size +…  in integrity_metadata()
1803 			unsigned int max_blocks = max_size / ic->tag_size;  in integrity_metadata()
1808 				unsigned int this_step_blocks = bi_size >> (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);  in integrity_metadata()
1811 				r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1812 							this_step_blocks * ic->tag_size, TAG_WRITE);  in integrity_metadata()
1819 				bi_size -= this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);  in integrity_metadata()
1840 				integrity_sector_checksum(ic, sector, mem + pos, checksums_ptr);  in integrity_metadata()
1841 				checksums_ptr += ic->tag_size;  in integrity_metadata()
1842 				sectors_to_process -= ic->sectors_per_block;  in integrity_metadata()
1843 				pos += ic->sectors_per_block << SECTOR_SHIFT;  in integrity_metadata()
1844 				sector += ic->sectors_per_block;  in integrity_metadata()
1848 			r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1880 			sector_to_block(ic, data_to_process);  in integrity_metadata()
1881 			data_to_process *= ic->tag_size;  in integrity_metadata()
1890 				r = dm_integrity_rw_tag(ic, tag, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1910 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_map()  local
1916 	dio->ic = ic;  in dm_integrity_map()
1936 		submit_flush_bio(ic, dio);  in dm_integrity_map()
1949 	if (unlikely(dio->range.logical_sector + bio_sectors(bio) > ic->provided_data_sectors)) {  in dm_integrity_map()
1952 		      ic->provided_data_sectors);  in dm_integrity_map()
1955 …if (unlikely((dio->range.logical_sector | bio_sectors(bio)) & (unsigned int)(ic->sectors_per_block…  in dm_integrity_map()
1957 		      ic->sectors_per_block,  in dm_integrity_map()
1962 	if (ic->sectors_per_block > 1 && likely(dio->op != REQ_OP_DISCARD)) {  in dm_integrity_map()
1967 			if (unlikely(bv.bv_len & ((ic->sectors_per_block << SECTOR_SHIFT) - 1))) {  in dm_integrity_map()
1969 					bv.bv_offset, bv.bv_len, ic->sectors_per_block);  in dm_integrity_map()
1976 	if (!ic->internal_hash) {  in dm_integrity_map()
1978 			unsigned int wanted_tag_size = bio_sectors(bio) >> ic->sb->log2_sectors_per_block;  in dm_integrity_map()
1980 			if (ic->log2_tag_size >= 0)  in dm_integrity_map()
1981 				wanted_tag_size <<= ic->log2_tag_size;  in dm_integrity_map()
1983 				wanted_tag_size *= ic->tag_size;  in dm_integrity_map()
1997 	if (unlikely(ic->mode == 'R') && unlikely(dio->op != REQ_OP_READ))  in dm_integrity_map()
2000 	get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in dm_integrity_map()
2001 	dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset);  in dm_integrity_map()
2002 	bio->bi_iter.bi_sector = get_data_sector(ic, area, offset);  in dm_integrity_map()
2011 	struct dm_integrity_c *ic = dio->ic;  in __journal_read_write()  local
2031 			struct journal_entry *je = access_journal_entry(ic, journal_section, journal_entry);  in __journal_read_write()
2042 					__io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je));  in __journal_read_write()
2047 				js = access_journal_data(ic, journal_section, journal_entry);  in __journal_read_write()
2055 				} while (++s < ic->sectors_per_block);  in __journal_read_write()
2057 				if (ic->internal_hash) {  in __journal_read_write()
2060 					integrity_sector_checksum(ic, logical_sector, mem + bv.bv_offset, checksums_onstack);  in __journal_read_write()
2061 					if (unlikely(memcmp(checksums_onstack, journal_entry_tag(ic, je), ic->tag_size))) {  in __journal_read_write()
2071 			if (!ic->internal_hash) {  in __journal_read_write()
2073 				unsigned int tag_todo = ic->tag_size;  in __journal_read_write()
2074 				char *tag_ptr = journal_entry_tag(ic, je);  in __journal_read_write()
2100 				js = access_journal_data(ic, journal_section, journal_entry);  in __journal_read_write()
2101 				memcpy(js, mem + bv.bv_offset, ic->sectors_per_block << SECTOR_SHIFT);  in __journal_read_write()
2106 				} while (++s < ic->sectors_per_block);  in __journal_read_write()
2108 				if (ic->internal_hash) {  in __journal_read_write()
2109 					unsigned int digest_size = crypto_shash_digestsize(ic->internal_hash);  in __journal_read_write()
2111 					if (unlikely(digest_size > ic->tag_size)) {  in __journal_read_write()
2114 						integrity_sector_checksum(ic, logical_sector, (char *)js, checksums_onstack);  in __journal_read_write()
2115 						memcpy(journal_entry_tag(ic, je), checksums_onstack, ic->tag_size);  in __journal_read_write()
2117 						integrity_sector_checksum(ic, logical_sector, (char *)js, journal_entry_tag(ic, je));  in __journal_read_write()
2122 			logical_sector += ic->sectors_per_block;  in __journal_read_write()
2125 			if (unlikely(journal_entry == ic->journal_section_entries)) {  in __journal_read_write()
2128 				wraparound_section(ic, &journal_section);  in __journal_read_write()
2131 			bv.bv_offset += ic->sectors_per_block << SECTOR_SHIFT;  in __journal_read_write()
2132 		} while (bv.bv_len -= ic->sectors_per_block << SECTOR_SHIFT);  in __journal_read_write()
2141 		if (unlikely(waitqueue_active(&ic->copy_to_journal_wait)))  in __journal_read_write()
2142 			wake_up(&ic->copy_to_journal_wait);  in __journal_read_write()
2143 		if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold)  in __journal_read_write()
2144 			queue_work(ic->commit_wq, &ic->commit_work);  in __journal_read_write()
2146 			schedule_autocommit(ic);  in __journal_read_write()
2148 		remove_range(ic, &dio->range);  in __journal_read_write()
2154 		get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in __journal_read_write()
2155 		dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset);  in __journal_read_write()
2164 	struct dm_integrity_c *ic = dio->ic;  in dm_integrity_map_continue()  local
2170 	bool need_sync_io = ic->internal_hash && dio->op == REQ_OP_READ;  in dm_integrity_map_continue()
2172 	if (unlikely(dio->op == REQ_OP_DISCARD) && ic->mode != 'D')  in dm_integrity_map_continue()
2177 		queue_work(ic->offload_wq, &dio->work);  in dm_integrity_map_continue()
2182 	spin_lock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2184 	if (unlikely(dm_integrity_failed(ic))) {  in dm_integrity_map_continue()
2185 		spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2186 		do_endio(ic, bio);  in dm_integrity_map_continue()
2191 	if (ic->mode == 'J' && likely(dio->op != REQ_OP_DISCARD)) {  in dm_integrity_map_continue()
2197 						   (sector_t)ic->free_sectors << ic->sb->log2_sectors_per_block);  in dm_integrity_map_continue()
2201 				sleep_on_endio_wait(ic);  in dm_integrity_map_continue()
2204 			range_sectors = dio->range.n_sectors >> ic->sb->log2_sectors_per_block;  in dm_integrity_map_continue()
2205 			ic->free_sectors -= range_sectors;  in dm_integrity_map_continue()
2206 			journal_section = ic->free_section;  in dm_integrity_map_continue()
2207 			journal_entry = ic->free_section_entry;  in dm_integrity_map_continue()
2209 			next_entry = ic->free_section_entry + range_sectors;  in dm_integrity_map_continue()
2210 			ic->free_section_entry = next_entry % ic->journal_section_entries;  in dm_integrity_map_continue()
2211 			ic->free_section += next_entry / ic->journal_section_entries;  in dm_integrity_map_continue()
2212 			ic->n_uncommitted_sections += next_entry / ic->journal_section_entries;  in dm_integrity_map_continue()
2213 			wraparound_section(ic, &ic->free_section);  in dm_integrity_map_continue()
2215 			pos = journal_section * ic->journal_section_entries + journal_entry;  in dm_integrity_map_continue()
2222 				add_journal_node(ic, &ic->journal_tree[pos], dio->range.logical_sector + i);  in dm_integrity_map_continue()
2224 				if (unlikely(pos >= ic->journal_entries))  in dm_integrity_map_continue()
2227 				je = access_journal_entry(ic, ws, we);  in dm_integrity_map_continue()
2231 				if (unlikely(we == ic->journal_section_entries)) {  in dm_integrity_map_continue()
2234 					wraparound_section(ic, &ws);  in dm_integrity_map_continue()
2236 			} while ((i += ic->sectors_per_block) < dio->range.n_sectors);  in dm_integrity_map_continue()
2238 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2243 			journal_read_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2251 				for (i = ic->sectors_per_block; i < dio->range.n_sectors; i += ic->sectors_per_block, jp++) {  in dm_integrity_map_continue()
2252 					if (!test_journal_node(ic, jp, dio->range.logical_sector + i))  in dm_integrity_map_continue()
2259 	if (unlikely(!add_new_range(ic, &dio->range, true))) {  in dm_integrity_map_continue()
2267 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2269 			queue_work(ic->wait_wq, &dio->work);  in dm_integrity_map_continue()
2273 			dio->range.n_sectors = ic->sectors_per_block;  in dm_integrity_map_continue()
2274 		wait_and_add_new_range(ic, &dio->range);  in dm_integrity_map_continue()
2284 			new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2286 				remove_range_unlocked(ic, &dio->range);  in dm_integrity_map_continue()
2291 	if (ic->mode == 'J' && likely(dio->op == REQ_OP_DISCARD) && !discard_retried) {  in dm_integrity_map_continue()
2295 		new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2298 			remove_range_unlocked(ic, &dio->range);  in dm_integrity_map_continue()
2299 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2300 			queue_work(ic->commit_wq, &ic->commit_work);  in dm_integrity_map_continue()
2301 			flush_workqueue(ic->commit_wq);  in dm_integrity_map_continue()
2302 			queue_work(ic->writer_wq, &ic->writer_work);  in dm_integrity_map_continue()
2303 			flush_workqueue(ic->writer_wq);  in dm_integrity_map_continue()
2308 	spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2311 		journal_section = journal_read_pos / ic->journal_section_entries;  in dm_integrity_map_continue()
2312 		journal_entry = journal_read_pos % ic->journal_section_entries;  in dm_integrity_map_continue()
2316 	if (ic->mode == 'B' && (dio->op == REQ_OP_WRITE || unlikely(dio->op == REQ_OP_DISCARD))) {  in dm_integrity_map_continue()
2317 		if (!block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in dm_integrity_map_continue()
2321 			bbs = sector_to_bitmap_block(ic, dio->range.logical_sector);  in dm_integrity_map_continue()
2325 			queue_work(ic->writer_wq, &bbs->work);  in dm_integrity_map_continue()
2339 	bio_set_dev(bio, ic->dev->bdev);  in dm_integrity_map_continue()
2345 	if (unlikely(dio->op == REQ_OP_DISCARD) && likely(ic->mode != 'D')) {  in dm_integrity_map_continue()
2347 		dm_integrity_flush_buffers(ic, false);  in dm_integrity_map_continue()
2361 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_map_continue()
2362 		    dio->range.logical_sector + dio->range.n_sectors > le64_to_cpu(ic->sb->recalc_sector))  in dm_integrity_map_continue()
2364 		if (ic->mode == 'B') {  in dm_integrity_map_continue()
2365 			if (!block_bitmap_op(ic, ic->recalc_bitmap, dio->range.logical_sector,  in dm_integrity_map_continue()
2377 		queue_work(ic->metadata_wq, &dio->work);  in dm_integrity_map_continue()
2386 	do_endio_flush(ic, dio);  in dm_integrity_map_continue()
2397 static void pad_uncommitted(struct dm_integrity_c *ic)  in pad_uncommitted()  argument
2399 	if (ic->free_section_entry) {  in pad_uncommitted()
2400 		ic->free_sectors -= ic->journal_section_entries - ic->free_section_entry;  in pad_uncommitted()
2401 		ic->free_section_entry = 0;  in pad_uncommitted()
2402 		ic->free_section++;  in pad_uncommitted()
2403 		wraparound_section(ic, &ic->free_section);  in pad_uncommitted()
2404 		ic->n_uncommitted_sections++;  in pad_uncommitted()
2406 	if (WARN_ON(ic->journal_sections * ic->journal_section_entries !=  in pad_uncommitted()
2407 		    (ic->n_uncommitted_sections + ic->n_committed_sections) *  in pad_uncommitted()
2408 		    ic->journal_section_entries + ic->free_sectors)) {  in pad_uncommitted()
2412 		       ic->journal_sections, ic->journal_section_entries,  in pad_uncommitted()
2413 		       ic->n_uncommitted_sections, ic->n_committed_sections,  in pad_uncommitted()
2414 		       ic->journal_section_entries, ic->free_sectors);  in pad_uncommitted()
2420 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, commit_work);  in integrity_commit()  local
2425 	del_timer(&ic->autocommit_timer);  in integrity_commit()
2427 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_commit()
2428 	flushes = bio_list_get(&ic->flush_bio_list);  in integrity_commit()
2429 	if (unlikely(ic->mode != 'J')) {  in integrity_commit()
2430 		spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2431 		dm_integrity_flush_buffers(ic, true);  in integrity_commit()
2435 	pad_uncommitted(ic);  in integrity_commit()
2436 	commit_start = ic->uncommitted_section;  in integrity_commit()
2437 	commit_sections = ic->n_uncommitted_sections;  in integrity_commit()
2438 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2443 	ic->wrote_to_journal = true;  in integrity_commit()
2447 		for (j = 0; j < ic->journal_section_entries; j++) {  in integrity_commit()
2450 			je = access_journal_entry(ic, i, j);  in integrity_commit()
2451 			io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je));  in integrity_commit()
2453 		for (j = 0; j < ic->journal_section_sectors; j++) {  in integrity_commit()
2456 			js = access_journal(ic, i, j);  in integrity_commit()
2457 			js->commit_id = dm_integrity_commit_id(ic, i, j, ic->commit_seq);  in integrity_commit()
2460 		if (unlikely(i >= ic->journal_sections))  in integrity_commit()
2461 			ic->commit_seq = next_commit_seq(ic->commit_seq);  in integrity_commit()
2462 		wraparound_section(ic, &i);  in integrity_commit()
2466 	write_journal(ic, commit_start, commit_sections);  in integrity_commit()
2468 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_commit()
2469 	ic->uncommitted_section += commit_sections;  in integrity_commit()
2470 	wraparound_section(ic, &ic->uncommitted_section);  in integrity_commit()
2471 	ic->n_uncommitted_sections -= commit_sections;  in integrity_commit()
2472 	ic->n_committed_sections += commit_sections;  in integrity_commit()
2473 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2475 	if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold)  in integrity_commit()
2476 		queue_work(ic->writer_wq, &ic->writer_work);  in integrity_commit()
2483 		do_endio(ic, flushes);  in integrity_commit()
2492 	struct dm_integrity_c *ic = comp->ic;  in complete_copy_from_journal()  local
2494 	remove_range(ic, &io->range);  in complete_copy_from_journal()
2495 	mempool_free(io, &ic->journal_io_mempool);  in complete_copy_from_journal()
2497 		dm_integrity_io_error(ic, "copying from journal", -EIO);  in complete_copy_from_journal()
2501 static void restore_last_bytes(struct dm_integrity_c *ic, struct journal_sector *js,  in restore_last_bytes()  argument
2509 	} while (++s < ic->sectors_per_block);  in restore_last_bytes()
2512 static void do_journal_write(struct dm_integrity_c *ic, unsigned int write_start,  in do_journal_write()  argument
2521 	comp.ic = ic;  in do_journal_write()
2526 	for (n = 0; n < write_sections; n++, i++, wraparound_section(ic, &i)) {  in do_journal_write()
2530 			rw_section_mac(ic, i, false);  in do_journal_write()
2531 		for (j = 0; j < ic->journal_section_entries; j++) {  in do_journal_write()
2532 			struct journal_entry *je = access_journal_entry(ic, i, j);  in do_journal_write()
2544 				if (unlikely(sec & (unsigned int)(ic->sectors_per_block - 1))) {  in do_journal_write()
2545 					dm_integrity_io_error(ic, "invalid sector in journal", -EIO);  in do_journal_write()
2546 					sec &= ~(sector_t)(ic->sectors_per_block - 1);  in do_journal_write()
2548 				if (unlikely(sec >= ic->provided_data_sectors)) {  in do_journal_write()
2553 			get_area_and_offset(ic, sec, &area, &offset);  in do_journal_write()
2554 			restore_last_bytes(ic, access_journal_data(ic, i, j), je);  in do_journal_write()
2555 			for (k = j + 1; k < ic->journal_section_entries; k++) {  in do_journal_write()
2556 				struct journal_entry *je2 = access_journal_entry(ic, i, k);  in do_journal_write()
2563 				if (unlikely(sec2 >= ic->provided_data_sectors))  in do_journal_write()
2565 				get_area_and_offset(ic, sec2, &area2, &offset2);  in do_journal_write()
2566 				if (area2 != area || offset2 != offset + ((k - j) << ic->sb->log2_sectors_per_block))  in do_journal_write()
2568 				restore_last_bytes(ic, access_journal_data(ic, i, k), je2);  in do_journal_write()
2572 			io = mempool_alloc(&ic->journal_io_mempool, GFP_NOIO);  in do_journal_write()
2575 			io->range.n_sectors = (k - j) << ic->sb->log2_sectors_per_block;  in do_journal_write()
2577 			spin_lock_irq(&ic->endio_wait.lock);  in do_journal_write()
2578 			add_new_range_and_wait(ic, &io->range);  in do_journal_write()
2581 				struct journal_node *section_node = &ic->journal_tree[i * ic->journal_section_entries];  in do_journal_write()
2584 				while (j < k && find_newer_committed_node(ic, &section_node[j])) {  in do_journal_write()
2585 					struct journal_entry *je2 = access_journal_entry(ic, i, j);  in do_journal_write()
2588 					remove_journal_node(ic, &section_node[j]);  in do_journal_write()
2590 					sec += ic->sectors_per_block;  in do_journal_write()
2591 					offset += ic->sectors_per_block;  in do_journal_write()
2593 				while (j < k && find_newer_committed_node(ic, &section_node[k - 1])) {  in do_journal_write()
2594 					struct journal_entry *je2 = access_journal_entry(ic, i, k - 1);  in do_journal_write()
2597 					remove_journal_node(ic, &section_node[k - 1]);  in do_journal_write()
2601 					remove_range_unlocked(ic, &io->range);  in do_journal_write()
2602 					spin_unlock_irq(&ic->endio_wait.lock);  in do_journal_write()
2603 					mempool_free(io, &ic->journal_io_mempool);  in do_journal_write()
2607 					remove_journal_node(ic, &section_node[l]);  in do_journal_write()
2609 			spin_unlock_irq(&ic->endio_wait.lock);  in do_journal_write()
2611 			metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset);  in do_journal_write()
2614 				struct journal_entry *je2 = access_journal_entry(ic, i, l);  in do_journal_write()
2620 				    ic->internal_hash) {  in do_journal_write()
2623 					integrity_sector_checksum(ic, sec + ((l - j) << ic->sb->log2_sectors_per_block),  in do_journal_write()
2624 								  (char *)access_journal_data(ic, i, l), test_tag);  in do_journal_write()
2625 					if (unlikely(memcmp(test_tag, journal_entry_tag(ic, je2), ic->tag_size))) {  in do_journal_write()
2626 						dm_integrity_io_error(ic, "tag mismatch when replaying journal", -EILSEQ);  in do_journal_write()
2627 						dm_audit_log_target(DM_MSG_PREFIX, "integrity-replay-journal", ic->ti, 0);  in do_journal_write()
2632 				r = dm_integrity_rw_tag(ic, journal_entry_tag(ic, je2), &metadata_block, &metadata_offset,  in do_journal_write()
2633 							ic->tag_size, TAG_WRITE);  in do_journal_write()
2635 					dm_integrity_io_error(ic, "reading tags", r);  in do_journal_write()
2639 			copy_from_journal(ic, i, j << ic->sb->log2_sectors_per_block,  in do_journal_write()
2640 					  (k - j) << ic->sb->log2_sectors_per_block,  in do_journal_write()
2641 					  get_data_sector(ic, area, offset),  in do_journal_write()
2648 	dm_bufio_write_dirty_buffers_async(ic->bufio);  in do_journal_write()
2655 	dm_integrity_flush_buffers(ic, true);  in do_journal_write()
2660 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, writer_work);  in integrity_writer()  local
2664 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_writer()
2665 	write_start = ic->committed_section;  in integrity_writer()
2666 	write_sections = ic->n_committed_sections;  in integrity_writer()
2667 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_writer()
2672 	do_journal_write(ic, write_start, write_sections, false);  in integrity_writer()
2674 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_writer()
2676 	ic->committed_section += write_sections;  in integrity_writer()
2677 	wraparound_section(ic, &ic->committed_section);  in integrity_writer()
2678 	ic->n_committed_sections -= write_sections;  in integrity_writer()
2680 	prev_free_sectors = ic->free_sectors;  in integrity_writer()
2681 	ic->free_sectors += write_sections * ic->journal_section_entries;  in integrity_writer()
2683 		wake_up_locked(&ic->endio_wait);  in integrity_writer()
2685 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_writer()
2688 static void recalc_write_super(struct dm_integrity_c *ic)  in recalc_write_super()  argument
2692 	dm_integrity_flush_buffers(ic, false);  in recalc_write_super()
2693 	if (dm_integrity_failed(ic))  in recalc_write_super()
2696 	r = sync_rw_sb(ic, REQ_OP_WRITE);  in recalc_write_super()
2698 		dm_integrity_io_error(ic, "writing superblock", r);  in recalc_write_super()
2703 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, recalc_work);  in integrity_recalc()  local
2725 		if (recalc_sectors >= 1U << ic->sb->log2_sectors_per_block)  in integrity_recalc()
2730 	recalc_tags_size = (recalc_sectors >> ic->sb->log2_sectors_per_block) * ic->tag_size;  in integrity_recalc()
2731 	if (crypto_shash_digestsize(ic->internal_hash) > ic->tag_size)  in integrity_recalc()
2732 		recalc_tags_size += crypto_shash_digestsize(ic->internal_hash) - ic->tag_size;  in integrity_recalc()
2740 	DEBUG_print("start recalculation... (position %llx)\n", le64_to_cpu(ic->sb->recalc_sector));  in integrity_recalc()
2742 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2746 	if (unlikely(dm_post_suspending(ic->ti)))  in integrity_recalc()
2749 	range.logical_sector = le64_to_cpu(ic->sb->recalc_sector);  in integrity_recalc()
2750 	if (unlikely(range.logical_sector >= ic->provided_data_sectors)) {  in integrity_recalc()
2751 		if (ic->mode == 'B') {  in integrity_recalc()
2752 			block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in integrity_recalc()
2754 			queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in integrity_recalc()
2759 	get_area_and_offset(ic, range.logical_sector, &area, &offset);  in integrity_recalc()
2760 	range.n_sectors = min((sector_t)recalc_sectors, ic->provided_data_sectors - range.logical_sector);  in integrity_recalc()
2761 	if (!ic->meta_dev)  in integrity_recalc()
2762 …range.n_sectors = min(range.n_sectors, ((sector_t)1U << ic->sb->log2_interleave_sectors) - (unsign…  in integrity_recalc()
2764 	add_new_range_and_wait(ic, &range);  in integrity_recalc()
2765 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2769 	if (ic->mode == 'B') {  in integrity_recalc()
2770 		if (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector, n_sectors, BITMAP_OP_TEST_ALL_CLEAR))  in integrity_recalc()
2773 		while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector,  in integrity_recalc()
2774 				       ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2775 			logical_sector += ic->sectors_per_block;  in integrity_recalc()
2776 			n_sectors -= ic->sectors_per_block;  in integrity_recalc()
2779 		while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector + n_sectors - ic->sectors_per_block,  in integrity_recalc()
2780 				       ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2781 			n_sectors -= ic->sectors_per_block;  in integrity_recalc()
2784 		get_area_and_offset(ic, logical_sector, &area, &offset);  in integrity_recalc()
2790 		recalc_write_super(ic);  in integrity_recalc()
2791 		if (ic->mode == 'B')  in integrity_recalc()
2792 			queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval);  in integrity_recalc()
2797 	if (unlikely(dm_integrity_failed(ic)))  in integrity_recalc()
2804 	io_req.client = ic->io;  in integrity_recalc()
2805 	io_loc.bdev = ic->dev->bdev;  in integrity_recalc()
2806 	io_loc.sector = get_data_sector(ic, area, offset);  in integrity_recalc()
2811 		dm_integrity_io_error(ic, "reading data", r);  in integrity_recalc()
2816 	for (i = 0; i < n_sectors; i += ic->sectors_per_block) {  in integrity_recalc()
2817 		integrity_sector_checksum(ic, logical_sector + i, recalc_buffer + (i << SECTOR_SHIFT), t);  in integrity_recalc()
2818 		t += ic->tag_size;  in integrity_recalc()
2821 	metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset);  in integrity_recalc()
2823 …r = dm_integrity_rw_tag(ic, recalc_tags, &metadata_block, &metadata_offset, t - recalc_tags, TAG_W…  in integrity_recalc()
2825 		dm_integrity_io_error(ic, "writing tags", r);  in integrity_recalc()
2829 	if (ic->mode == 'B') {  in integrity_recalc()
2833 			 (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) <<  in integrity_recalc()
2834 			(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in integrity_recalc()
2836 		       (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) <<  in integrity_recalc()
2837 			(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in integrity_recalc()
2838 		block_bitmap_op(ic, ic->recalc_bitmap, start, end - start, BITMAP_OP_CLEAR);  in integrity_recalc()
2844 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2845 	remove_range_unlocked(ic, &range);  in integrity_recalc()
2846 	ic->sb->recalc_sector = cpu_to_le64(range.logical_sector + range.n_sectors);  in integrity_recalc()
2850 	remove_range(ic, &range);  in integrity_recalc()
2854 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2856 	recalc_write_super(ic);  in integrity_recalc()
2866 	struct dm_integrity_c *ic = bbs->ic;  in bitmap_block_work()  local
2883 		if (block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in bitmap_block_work()
2885 			remove_range(ic, &dio->range);  in bitmap_block_work()
2887 			queue_work(ic->offload_wq, &dio->work);  in bitmap_block_work()
2889 			block_bitmap_op(ic, ic->journal, dio->range.logical_sector,  in bitmap_block_work()
2898 	rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC,  in bitmap_block_work()
2905 		block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in bitmap_block_work()
2908 		remove_range(ic, &dio->range);  in bitmap_block_work()
2910 		queue_work(ic->offload_wq, &dio->work);  in bitmap_block_work()
2913 	queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval);  in bitmap_block_work()
2918 	struct dm_integrity_c *ic = container_of(work, struct dm_integrity_c, bitmap_flush_work.work);  in bitmap_flush_work()  local
2923 	dm_integrity_flush_buffers(ic, false);  in bitmap_flush_work()
2926 	range.n_sectors = ic->provided_data_sectors;  in bitmap_flush_work()
2928 	spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2929 	add_new_range_and_wait(ic, &range);  in bitmap_flush_work()
2930 	spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2932 	dm_integrity_flush_buffers(ic, true);  in bitmap_flush_work()
2934 	limit = ic->provided_data_sectors;  in bitmap_flush_work()
2935 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in bitmap_flush_work()
2936 		limit = le64_to_cpu(ic->sb->recalc_sector)  in bitmap_flush_work()
2937 			>> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)  in bitmap_flush_work()
2938 			<< (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in bitmap_flush_work()
2941 	block_bitmap_op(ic, ic->journal, 0, limit, BITMAP_OP_CLEAR);  in bitmap_flush_work()
2942 	block_bitmap_op(ic, ic->may_write_bitmap, 0, limit, BITMAP_OP_CLEAR);  in bitmap_flush_work()
2944 	rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in bitmap_flush_work()
2945 			   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in bitmap_flush_work()
2947 	spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2948 	remove_range_unlocked(ic, &range);  in bitmap_flush_work()
2949 	while (unlikely((bio = bio_list_pop(&ic->synchronous_bios)) != NULL)) {  in bitmap_flush_work()
2951 		spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2952 		spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2954 	spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2958 static void init_journal(struct dm_integrity_c *ic, unsigned int start_section,  in init_journal()  argument
2968 		wraparound_section(ic, &i);  in init_journal()
2969 		for (j = 0; j < ic->journal_section_sectors; j++) {  in init_journal()
2970 			struct journal_sector *js = access_journal(ic, i, j);  in init_journal()
2974 			js->commit_id = dm_integrity_commit_id(ic, i, j, commit_seq);  in init_journal()
2976 		for (j = 0; j < ic->journal_section_entries; j++) {  in init_journal()
2977 			struct journal_entry *je = access_journal_entry(ic, i, j);  in init_journal()
2983 	write_journal(ic, start_section, n_sections);  in init_journal()
2986 static int find_commit_seq(struct dm_integrity_c *ic, unsigned int i, unsigned int j, commit_id_t i…  in find_commit_seq()  argument
2991 		if (dm_integrity_commit_id(ic, i, j, k) == id)  in find_commit_seq()
2994 	dm_integrity_io_error(ic, "journal commit id", -EIO);  in find_commit_seq()
2998 static void replay_journal(struct dm_integrity_c *ic)  in replay_journal()  argument
3008 	if (ic->mode == 'R')  in replay_journal()
3011 	if (ic->journal_uptodate)  in replay_journal()
3017 	if (!ic->just_formatted) {  in replay_journal()
3019 		rw_journal(ic, REQ_OP_READ, 0, ic->journal_sections, NULL);  in replay_journal()
3020 		if (ic->journal_io)  in replay_journal()
3021 			DEBUG_bytes(lowmem_page_address(ic->journal_io[0].page), 64, "read journal");  in replay_journal()
3022 		if (ic->journal_io) {  in replay_journal()
3025 			crypt_comp.ic = ic;  in replay_journal()
3028 			encrypt_journal(ic, false, 0, ic->journal_sections, &crypt_comp);  in replay_journal()
3031 		DEBUG_bytes(lowmem_page_address(ic->journal[0].page), 64, "decrypted journal");  in replay_journal()
3034 	if (dm_integrity_failed(ic))  in replay_journal()
3040 	for (i = 0; i < ic->journal_sections; i++) {  in replay_journal()
3041 		for (j = 0; j < ic->journal_section_sectors; j++) {  in replay_journal()
3043 			struct journal_sector *js = access_journal(ic, i, j);  in replay_journal()
3045 			k = find_commit_seq(ic, i, j, js->commit_id);  in replay_journal()
3052 			for (j = 0; j < ic->journal_section_entries; j++) {  in replay_journal()
3053 				struct journal_entry *je = access_journal_entry(ic, i, j);  in replay_journal()
3072 			dm_integrity_io_error(ic, "journal commit ids", -EIO);  in replay_journal()
3087 	if (unlikely(write_start >= ic->journal_sections))  in replay_journal()
3089 	wraparound_section(ic, &write_start);  in replay_journal()
3092 	for (write_sections = 0; write_sections < ic->journal_sections; write_sections++) {  in replay_journal()
3093 		for (j = 0; j < ic->journal_section_sectors; j++) {  in replay_journal()
3094 			struct journal_sector *js = access_journal(ic, i, j);  in replay_journal()
3096 			if (js->commit_id != dm_integrity_commit_id(ic, i, j, want_commit_seq)) {  in replay_journal()
3103 					    i, j, find_commit_seq(ic, i, j, js->commit_id), want_commit_seq);  in replay_journal()
3108 		if (unlikely(i >= ic->journal_sections))  in replay_journal()
3110 		wraparound_section(ic, &i);  in replay_journal()
3117 		do_journal_write(ic, write_start, write_sections, true);  in replay_journal()
3120 	if (write_sections == ic->journal_sections && (ic->mode == 'J' || journal_empty)) {  in replay_journal()
3122 		ic->commit_seq = want_commit_seq;  in replay_journal()
3123 		DEBUG_print("continuing from section %u, commit seq %d\n", write_start, ic->commit_seq);  in replay_journal()
3133 		init_journal(ic, s, 1, erase_seq);  in replay_journal()
3135 		wraparound_section(ic, &s);  in replay_journal()
3136 		if (ic->journal_sections >= 2) {  in replay_journal()
3137 			init_journal(ic, s, ic->journal_sections - 2, erase_seq);  in replay_journal()
3138 			s += ic->journal_sections - 2;  in replay_journal()
3139 			wraparound_section(ic, &s);  in replay_journal()
3140 			init_journal(ic, s, 1, erase_seq);  in replay_journal()
3144 		ic->commit_seq = next_commit_seq(erase_seq);  in replay_journal()
3147 	ic->committed_section = continue_section;  in replay_journal()
3148 	ic->n_committed_sections = 0;  in replay_journal()
3150 	ic->uncommitted_section = continue_section;  in replay_journal()
3151 	ic->n_uncommitted_sections = 0;  in replay_journal()
3153 	ic->free_section = continue_section;  in replay_journal()
3154 	ic->free_section_entry = 0;  in replay_journal()
3155 	ic->free_sectors = ic->journal_entries;  in replay_journal()
3157 	ic->journal_tree_root = RB_ROOT;  in replay_journal()
3158 	for (i = 0; i < ic->journal_entries; i++)  in replay_journal()
3159 		init_journal_node(&ic->journal_tree[i]);  in replay_journal()
3162 static void dm_integrity_enter_synchronous_mode(struct dm_integrity_c *ic)  in dm_integrity_enter_synchronous_mode()  argument
3166 	if (ic->mode == 'B') {  in dm_integrity_enter_synchronous_mode()
3167 		ic->bitmap_flush_interval = msecs_to_jiffies(10) + 1;  in dm_integrity_enter_synchronous_mode()
3168 		ic->synchronous_mode = 1;  in dm_integrity_enter_synchronous_mode()
3170 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_enter_synchronous_mode()
3171 		queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in dm_integrity_enter_synchronous_mode()
3172 		flush_workqueue(ic->commit_wq);  in dm_integrity_enter_synchronous_mode()
3178 	struct dm_integrity_c *ic = container_of(n, struct dm_integrity_c, reboot_notifier);  in dm_integrity_reboot()  local
3182 	dm_integrity_enter_synchronous_mode(ic);  in dm_integrity_reboot()
3189 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_postsuspend()  local
3192 	WARN_ON(unregister_reboot_notifier(&ic->reboot_notifier));  in dm_integrity_postsuspend()
3194 	del_timer_sync(&ic->autocommit_timer);  in dm_integrity_postsuspend()
3196 	if (ic->recalc_wq)  in dm_integrity_postsuspend()
3197 		drain_workqueue(ic->recalc_wq);  in dm_integrity_postsuspend()
3199 	if (ic->mode == 'B')  in dm_integrity_postsuspend()
3200 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_postsuspend()
3202 	queue_work(ic->commit_wq, &ic->commit_work);  in dm_integrity_postsuspend()
3203 	drain_workqueue(ic->commit_wq);  in dm_integrity_postsuspend()
3205 	if (ic->mode == 'J') {  in dm_integrity_postsuspend()
3206 		queue_work(ic->writer_wq, &ic->writer_work);  in dm_integrity_postsuspend()
3207 		drain_workqueue(ic->writer_wq);  in dm_integrity_postsuspend()
3208 		dm_integrity_flush_buffers(ic, true);  in dm_integrity_postsuspend()
3209 		if (ic->wrote_to_journal) {  in dm_integrity_postsuspend()
3210 			init_journal(ic, ic->free_section,  in dm_integrity_postsuspend()
3211 				     ic->journal_sections - ic->free_section, ic->commit_seq);  in dm_integrity_postsuspend()
3212 			if (ic->free_section) {  in dm_integrity_postsuspend()
3213 				init_journal(ic, 0, ic->free_section,  in dm_integrity_postsuspend()
3214 					     next_commit_seq(ic->commit_seq));  in dm_integrity_postsuspend()
3219 	if (ic->mode == 'B') {  in dm_integrity_postsuspend()
3220 		dm_integrity_flush_buffers(ic, true);  in dm_integrity_postsuspend()
3223 		init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_postsuspend()
3224 		ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_postsuspend()
3225 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_postsuspend()
3227 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_postsuspend()
3231 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));  in dm_integrity_postsuspend()
3233 	ic->journal_uptodate = true;  in dm_integrity_postsuspend()
3238 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_resume()  local
3239 	__u64 old_provided_data_sectors = le64_to_cpu(ic->sb->provided_data_sectors);  in dm_integrity_resume()
3244 	ic->wrote_to_journal = false;  in dm_integrity_resume()
3246 	if (ic->provided_data_sectors != old_provided_data_sectors) {  in dm_integrity_resume()
3247 		if (ic->provided_data_sectors > old_provided_data_sectors &&  in dm_integrity_resume()
3248 		    ic->mode == 'B' &&  in dm_integrity_resume()
3249 		    ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit) {  in dm_integrity_resume()
3250 			rw_journal_sectors(ic, REQ_OP_READ, 0,  in dm_integrity_resume()
3251 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3252 			block_bitmap_op(ic, ic->journal, old_provided_data_sectors,  in dm_integrity_resume()
3253 					ic->provided_data_sectors - old_provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3254 			rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3255 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3258 		ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);  in dm_integrity_resume()
3259 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3261 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3264 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP)) {  in dm_integrity_resume()
3266 		rw_journal_sectors(ic, REQ_OP_READ, 0,  in dm_integrity_resume()
3267 				   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3268 		if (ic->mode == 'B') {  in dm_integrity_resume()
3269 			if (ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit &&  in dm_integrity_resume()
3270 			    !ic->reset_recalculate_flag) {  in dm_integrity_resume()
3271 				block_bitmap_copy(ic, ic->recalc_bitmap, ic->journal);  in dm_integrity_resume()
3272 				block_bitmap_copy(ic, ic->may_write_bitmap, ic->journal);  in dm_integrity_resume()
3273 				if (!block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors,  in dm_integrity_resume()
3275 					ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3276 					ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3280 					    ic->sb->log2_blocks_per_bitmap_bit, ic->log2_blocks_per_bitmap_bit);  in dm_integrity_resume()
3281 				ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;  in dm_integrity_resume()
3282 				block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3283 				block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3284 				block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3285 				rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3286 						   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3287 				ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3288 				ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3291 			if (!(ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit &&  in dm_integrity_resume()
3292 …	      block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_TEST_ALL_CLEAR)) ||  in dm_integrity_resume()
3293 			    ic->reset_recalculate_flag) {  in dm_integrity_resume()
3294 				ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3295 				ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3297 			init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_resume()
3298 			replay_journal(ic);  in dm_integrity_resume()
3299 			ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_resume()
3301 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3303 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3305 		replay_journal(ic);  in dm_integrity_resume()
3306 		if (ic->reset_recalculate_flag) {  in dm_integrity_resume()
3307 			ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3308 			ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3310 		if (ic->mode == 'B') {  in dm_integrity_resume()
3311 			ic->sb->flags |= cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_resume()
3312 			ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;  in dm_integrity_resume()
3313 			r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3315 				dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3317 			block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3318 			block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3319 			block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3320 			if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_resume()
3321 			    le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors) {  in dm_integrity_resume()
3322 				block_bitmap_op(ic, ic->journal, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3323 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3324 				block_bitmap_op(ic, ic->recalc_bitmap, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3325 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3326 				block_bitmap_op(ic, ic->may_write_bitmap, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3327 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3329 			rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3330 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3334 	DEBUG_print("testing recalc: %x\n", ic->sb->flags);  in dm_integrity_resume()
3335 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in dm_integrity_resume()
3336 		__u64 recalc_pos = le64_to_cpu(ic->sb->recalc_sector);  in dm_integrity_resume()
3338 		DEBUG_print("recalc pos: %llx / %llx\n", recalc_pos, ic->provided_data_sectors);  in dm_integrity_resume()
3339 		if (recalc_pos < ic->provided_data_sectors) {  in dm_integrity_resume()
3340 			queue_work(ic->recalc_wq, &ic->recalc_work);  in dm_integrity_resume()
3341 		} else if (recalc_pos > ic->provided_data_sectors) {  in dm_integrity_resume()
3342 			ic->sb->recalc_sector = cpu_to_le64(ic->provided_data_sectors);  in dm_integrity_resume()
3343 			recalc_write_super(ic);  in dm_integrity_resume()
3347 	ic->reboot_notifier.notifier_call = dm_integrity_reboot;  in dm_integrity_resume()
3348 	ic->reboot_notifier.next = NULL;  in dm_integrity_resume()
3349 	ic->reboot_notifier.priority = INT_MAX - 1;	/* be notified after md and before hardware drivers */  in dm_integrity_resume()
3350 	WARN_ON(register_reboot_notifier(&ic->reboot_notifier));  in dm_integrity_resume()
3354 	dm_integrity_enter_synchronous_mode(ic);  in dm_integrity_resume()
3361 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_status()  local
3368 			(unsigned long long)atomic64_read(&ic->number_of_mismatches),  in dm_integrity_status()
3369 			ic->provided_data_sectors);  in dm_integrity_status()
3370 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in dm_integrity_status()
3371 			DMEMIT(" %llu", le64_to_cpu(ic->sb->recalc_sector));  in dm_integrity_status()
3377 		__u64 watermark_percentage = (__u64)(ic->journal_entries - ic->free_sectors_threshold) * 100;  in dm_integrity_status()
3379 		watermark_percentage += ic->journal_entries / 2;  in dm_integrity_status()
3380 		do_div(watermark_percentage, ic->journal_entries);  in dm_integrity_status()
3382 		arg_count += !!ic->meta_dev;  in dm_integrity_status()
3383 		arg_count += ic->sectors_per_block != 1;  in dm_integrity_status()
3384 		arg_count += !!(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING));  in dm_integrity_status()
3385 		arg_count += ic->reset_recalculate_flag;  in dm_integrity_status()
3386 		arg_count += ic->discard;  in dm_integrity_status()
3387 		arg_count += ic->mode == 'J';  in dm_integrity_status()
3388 		arg_count += ic->mode == 'J';  in dm_integrity_status()
3389 		arg_count += ic->mode == 'B';  in dm_integrity_status()
3390 		arg_count += ic->mode == 'B';  in dm_integrity_status()
3391 		arg_count += !!ic->internal_hash_alg.alg_string;  in dm_integrity_status()
3392 		arg_count += !!ic->journal_crypt_alg.alg_string;  in dm_integrity_status()
3393 		arg_count += !!ic->journal_mac_alg.alg_string;  in dm_integrity_status()
3394 		arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0;  in dm_integrity_status()
3395 		arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0;  in dm_integrity_status()
3396 		arg_count += ic->legacy_recalculate;  in dm_integrity_status()
3397 		DMEMIT("%s %llu %u %c %u", ic->dev->name, ic->start,  in dm_integrity_status()
3398 		       ic->tag_size, ic->mode, arg_count);  in dm_integrity_status()
3399 		if (ic->meta_dev)  in dm_integrity_status()
3400 			DMEMIT(" meta_device:%s", ic->meta_dev->name);  in dm_integrity_status()
3401 		if (ic->sectors_per_block != 1)  in dm_integrity_status()
3402 			DMEMIT(" block_size:%u", ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_status()
3403 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in dm_integrity_status()
3405 		if (ic->reset_recalculate_flag)  in dm_integrity_status()
3407 		if (ic->discard)  in dm_integrity_status()
3409 		DMEMIT(" journal_sectors:%u", ic->initial_sectors - SB_SECTORS);  in dm_integrity_status()
3410 		DMEMIT(" interleave_sectors:%u", 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_status()
3411 		DMEMIT(" buffer_sectors:%u", 1U << ic->log2_buffer_sectors);  in dm_integrity_status()
3412 		if (ic->mode == 'J') {  in dm_integrity_status()
3414 			DMEMIT(" commit_time:%u", ic->autocommit_msec);  in dm_integrity_status()
3416 		if (ic->mode == 'B') {  in dm_integrity_status()
3417 …DMEMIT(" sectors_per_bit:%llu", (sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit);  in dm_integrity_status()
3418 			DMEMIT(" bitmap_flush_interval:%u", jiffies_to_msecs(ic->bitmap_flush_interval));  in dm_integrity_status()
3420 		if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0)  in dm_integrity_status()
3422 		if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0)  in dm_integrity_status()
3424 		if (ic->legacy_recalculate)  in dm_integrity_status()
3429 			if (ic->a.alg_string) {				\  in dm_integrity_status()
3430 				DMEMIT(" %s:%s", n, ic->a.alg_string);	\  in dm_integrity_status()
3431 				if (ic->a.key_string)			\  in dm_integrity_status()
3432 					DMEMIT(":%s", ic->a.key_string);\  in dm_integrity_status()
3443 			ic->dev->name, ic->start, ic->tag_size, ic->mode);  in dm_integrity_status()
3445 		if (ic->meta_dev)  in dm_integrity_status()
3446 			DMEMIT(",meta_device=%s", ic->meta_dev->name);  in dm_integrity_status()
3447 		if (ic->sectors_per_block != 1)  in dm_integrity_status()
3448 			DMEMIT(",block_size=%u", ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_status()
3450 		DMEMIT(",recalculate=%c", (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) ?  in dm_integrity_status()
3452 		DMEMIT(",allow_discards=%c", ic->discard ? 'y' : 'n');  in dm_integrity_status()
3454 		       ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0) ? 'y' : 'n');  in dm_integrity_status()
3456 		       ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0) ? 'y' : 'n');  in dm_integrity_status()
3457 		DMEMIT(",legacy_recalculate=%c", ic->legacy_recalculate ? 'y' : 'n');  in dm_integrity_status()
3459 		DMEMIT(",journal_sectors=%u", ic->initial_sectors - SB_SECTORS);  in dm_integrity_status()
3460 		DMEMIT(",interleave_sectors=%u", 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_status()
3461 		DMEMIT(",buffer_sectors=%u", 1U << ic->log2_buffer_sectors);  in dm_integrity_status()
3470 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_iterate_devices()  local
3472 	if (!ic->meta_dev)  in dm_integrity_iterate_devices()
3473 		return fn(ti, ic->dev, ic->start + ic->initial_sectors + ic->metadata_run, ti->len, data);  in dm_integrity_iterate_devices()
3475 		return fn(ti, ic->dev, 0, ti->len, data);  in dm_integrity_iterate_devices()
3480 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_io_hints()  local
3482 	if (ic->sectors_per_block > 1) {  in dm_integrity_io_hints()
3483 		limits->logical_block_size = ic->sectors_per_block << SECTOR_SHIFT;  in dm_integrity_io_hints()
3484 		limits->physical_block_size = ic->sectors_per_block << SECTOR_SHIFT;  in dm_integrity_io_hints()
3485 		blk_limits_io_min(limits, ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_io_hints()
3490 static void calculate_journal_section_size(struct dm_integrity_c *ic)  in calculate_journal_section_size()  argument
3494 	ic->journal_sections = le32_to_cpu(ic->sb->journal_sections);  in calculate_journal_section_size()
3495 …ic->journal_entry_size = roundup(offsetof(struct journal_entry, last_bytes[ic->sectors_per_block])…  in calculate_journal_section_size()
3498 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC))  in calculate_journal_section_size()
3500 	ic->journal_entries_per_sector = sector_space / ic->journal_entry_size;  in calculate_journal_section_size()
3501 	ic->journal_section_entries = ic->journal_entries_per_sector * JOURNAL_BLOCK_SECTORS;  in calculate_journal_section_size()
3502 …ic->journal_section_sectors = (ic->journal_section_entries << ic->sb->log2_sectors_per_block) + JO…  in calculate_journal_section_size()
3503 	ic->journal_entries = ic->journal_section_entries * ic->journal_sections;  in calculate_journal_section_size()
3506 static int calculate_device_limits(struct dm_integrity_c *ic)  in calculate_device_limits()  argument
3510 	calculate_journal_section_size(ic);  in calculate_device_limits()
3511 	initial_sectors = SB_SECTORS + (__u64)ic->journal_section_sectors * ic->journal_sections;  in calculate_device_limits()
3512 …if (initial_sectors + METADATA_PADDING_SECTORS >= ic->meta_device_sectors || initial_sectors > UIN…  in calculate_device_limits()
3514 	ic->initial_sectors = initial_sectors;  in calculate_device_limits()
3516 	if (!ic->meta_dev) {  in calculate_device_limits()
3521 			ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING) ?  in calculate_device_limits()
3525 …ic->metadata_run = round_up((__u64)ic->tag_size << (ic->sb->log2_interleave_sectors - ic->sb->log2…  in calculate_device_limits()
3527 		if (!(ic->metadata_run & (ic->metadata_run - 1)))  in calculate_device_limits()
3528 			ic->log2_metadata_run = __ffs(ic->metadata_run);  in calculate_device_limits()
3530 			ic->log2_metadata_run = -1;  in calculate_device_limits()
3532 		get_area_and_offset(ic, ic->provided_data_sectors - 1, &last_area, &last_offset);  in calculate_device_limits()
3533 		last_sector = get_data_sector(ic, last_area, last_offset);  in calculate_device_limits()
3534 		if (last_sector < ic->start || last_sector >= ic->meta_device_sectors)  in calculate_device_limits()
3537 		__u64 meta_size = (ic->provided_data_sectors >> ic->sb->log2_sectors_per_block) * ic->tag_size;  in calculate_device_limits()
3539 		meta_size = (meta_size + ((1U << (ic->log2_buffer_sectors + SECTOR_SHIFT)) - 1))  in calculate_device_limits()
3540 				>> (ic->log2_buffer_sectors + SECTOR_SHIFT);  in calculate_device_limits()
3541 		meta_size <<= ic->log2_buffer_sectors;  in calculate_device_limits()
3542 		if (ic->initial_sectors + meta_size < ic->initial_sectors ||  in calculate_device_limits()
3543 		    ic->initial_sectors + meta_size > ic->meta_device_sectors)  in calculate_device_limits()
3545 		ic->metadata_run = 1;  in calculate_device_limits()
3546 		ic->log2_metadata_run = 0;  in calculate_device_limits()
3552 static void get_provided_data_sectors(struct dm_integrity_c *ic)  in get_provided_data_sectors()  argument
3554 	if (!ic->meta_dev) {  in get_provided_data_sectors()
3557 		ic->provided_data_sectors = 0;  in get_provided_data_sectors()
3558 		for (test_bit = fls64(ic->meta_device_sectors) - 1; test_bit >= 3; test_bit--) {  in get_provided_data_sectors()
3559 			__u64 prev_data_sectors = ic->provided_data_sectors;  in get_provided_data_sectors()
3561 			ic->provided_data_sectors |= (sector_t)1 << test_bit;  in get_provided_data_sectors()
3562 			if (calculate_device_limits(ic))  in get_provided_data_sectors()
3563 				ic->provided_data_sectors = prev_data_sectors;  in get_provided_data_sectors()
3566 		ic->provided_data_sectors = ic->data_device_sectors;  in get_provided_data_sectors()
3567 		ic->provided_data_sectors &= ~(sector_t)(ic->sectors_per_block - 1);  in get_provided_data_sectors()
3571 static int initialize_superblock(struct dm_integrity_c *ic,  in initialize_superblock()  argument
3577 	memset(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT);  in initialize_superblock()
3578 	memcpy(ic->sb->magic, SB_MAGIC, 8);  in initialize_superblock()
3579 	ic->sb->integrity_tag_size = cpu_to_le16(ic->tag_size);  in initialize_superblock()
3580 	ic->sb->log2_sectors_per_block = __ffs(ic->sectors_per_block);  in initialize_superblock()
3581 	if (ic->journal_mac_alg.alg_string)  in initialize_superblock()
3582 		ic->sb->flags |= cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC);  in initialize_superblock()
3584 	calculate_journal_section_size(ic);  in initialize_superblock()
3585 	journal_sections = journal_sectors / ic->journal_section_sectors;  in initialize_superblock()
3589 	if (ic->fix_hmac && (ic->internal_hash_alg.alg_string || ic->journal_mac_alg.alg_string)) {  in initialize_superblock()
3590 		ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_HMAC);  in initialize_superblock()
3591 		get_random_bytes(ic->sb->salt, SALT_SIZE);  in initialize_superblock()
3594 	if (!ic->meta_dev) {  in initialize_superblock()
3595 		if (ic->fix_padding)  in initialize_superblock()
3596 			ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_PADDING);  in initialize_superblock()
3597 		ic->sb->journal_sections = cpu_to_le32(journal_sections);  in initialize_superblock()
3600 		ic->sb->log2_interleave_sectors = __fls(interleave_sectors);  in initialize_superblock()
3601 …ic->sb->log2_interleave_sectors = max_t(__u8, MIN_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave…  in initialize_superblock()
3602 …ic->sb->log2_interleave_sectors = min_t(__u8, MAX_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave…  in initialize_superblock()
3604 		get_provided_data_sectors(ic);  in initialize_superblock()
3605 		if (!ic->provided_data_sectors)  in initialize_superblock()
3608 		ic->sb->log2_interleave_sectors = 0;  in initialize_superblock()
3610 		get_provided_data_sectors(ic);  in initialize_superblock()
3611 		if (!ic->provided_data_sectors)  in initialize_superblock()
3615 		ic->sb->journal_sections = cpu_to_le32(0);  in initialize_superblock()
3617 			__u32 prev_journal_sections = le32_to_cpu(ic->sb->journal_sections);  in initialize_superblock()
3622 			ic->sb->journal_sections = cpu_to_le32(test_journal_sections);  in initialize_superblock()
3623 			if (calculate_device_limits(ic))  in initialize_superblock()
3624 				ic->sb->journal_sections = cpu_to_le32(prev_journal_sections);  in initialize_superblock()
3627 		if (!le32_to_cpu(ic->sb->journal_sections)) {  in initialize_superblock()
3628 			if (ic->log2_buffer_sectors > 3) {  in initialize_superblock()
3629 				ic->log2_buffer_sectors--;  in initialize_superblock()
3636 	ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);  in initialize_superblock()
3638 	sb_set_version(ic);  in initialize_superblock()
3643 static void dm_integrity_set(struct dm_target *ti, struct dm_integrity_c *ic)  in dm_integrity_set()  argument
3650 	bi.tuple_size = ic->tag_size;  in dm_integrity_set()
3652 	bi.interval_exp = ic->sb->log2_sectors_per_block + SECTOR_SHIFT;  in dm_integrity_set()
3693 static void dm_integrity_free_journal_scatterlist(struct dm_integrity_c *ic, struct scatterlist **s…  in dm_integrity_free_journal_scatterlist()  argument
3697 	for (i = 0; i < ic->journal_sections; i++)  in dm_integrity_free_journal_scatterlist()
3702 static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_integrity_c *ic,  in dm_integrity_alloc_journal_scatterlist()  argument
3708 	sl = kvmalloc_array(ic->journal_sections,  in dm_integrity_alloc_journal_scatterlist()
3714 	for (i = 0; i < ic->journal_sections; i++) {  in dm_integrity_alloc_journal_scatterlist()
3721 		page_list_location(ic, i, 0, &start_index, &start_offset);  in dm_integrity_alloc_journal_scatterlist()
3722 		page_list_location(ic, i, ic->journal_section_sectors - 1,  in dm_integrity_alloc_journal_scatterlist()
3730 			dm_integrity_free_journal_scatterlist(ic, sl);  in dm_integrity_alloc_journal_scatterlist()
3822 static int create_journal(struct dm_integrity_c *ic, char **error)  in create_journal()  argument
3830 	ic->commit_ids[0] = cpu_to_le64(0x1111111111111111ULL);  in create_journal()
3831 	ic->commit_ids[1] = cpu_to_le64(0x2222222222222222ULL);  in create_journal()
3832 	ic->commit_ids[2] = cpu_to_le64(0x3333333333333333ULL);  in create_journal()
3833 	ic->commit_ids[3] = cpu_to_le64(0x4444444444444444ULL);  in create_journal()
3835 	journal_pages = roundup((__u64)ic->journal_sections * ic->journal_section_sectors,  in create_journal()
3843 	ic->journal_pages = journal_pages;  in create_journal()
3845 	ic->journal = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3846 	if (!ic->journal) {  in create_journal()
3851 	if (ic->journal_crypt_alg.alg_string) {  in create_journal()
3855 		comp.ic = ic;  in create_journal()
3856 …ic->journal_crypt = crypto_alloc_skcipher(ic->journal_crypt_alg.alg_string, 0, CRYPTO_ALG_ALLOCATE…  in create_journal()
3857 		if (IS_ERR(ic->journal_crypt)) {  in create_journal()
3859 			r = PTR_ERR(ic->journal_crypt);  in create_journal()
3860 			ic->journal_crypt = NULL;  in create_journal()
3863 		ivsize = crypto_skcipher_ivsize(ic->journal_crypt);  in create_journal()
3864 		blocksize = crypto_skcipher_blocksize(ic->journal_crypt);  in create_journal()
3866 		if (ic->journal_crypt_alg.key) {  in create_journal()
3867 			r = crypto_skcipher_setkey(ic->journal_crypt, ic->journal_crypt_alg.key,  in create_journal()
3868 						   ic->journal_crypt_alg.key_size);  in create_journal()
3875 			    ic->journal_crypt_alg.alg_string, blocksize, ivsize);  in create_journal()
3877 		ic->journal_io = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3878 		if (!ic->journal_io) {  in create_journal()
3887 			req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3901 			ic->journal_xor = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3902 			if (!ic->journal_xor) {  in create_journal()
3908 			sg = kvmalloc_array(ic->journal_pages + 1,  in create_journal()
3916 			sg_init_table(sg, ic->journal_pages + 1);  in create_journal()
3917 			for (i = 0; i < ic->journal_pages; i++) {  in create_journal()
3918 				char *va = lowmem_page_address(ic->journal_xor[i].page);  in create_journal()
3923 			sg_set_buf(&sg[i], &ic->commit_ids, sizeof(ic->commit_ids));  in create_journal()
3926 						   PAGE_SIZE * ic->journal_pages + sizeof(ic->commit_ids), crypt_iv);  in create_journal()
3932 			r = dm_integrity_failed(ic);  in create_journal()
3937 			DEBUG_bytes(lowmem_page_address(ic->journal_xor[0].page), 64, "xor data");  in create_journal()
3939 			crypto_free_skcipher(ic->journal_crypt);  in create_journal()
3940 			ic->journal_crypt = NULL;  in create_journal()
3944 			req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3965 			ic->journal_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal);  in create_journal()
3966 			if (!ic->journal_scatterlist) {  in create_journal()
3971 			ic->journal_io_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal_io);  in create_journal()
3972 			if (!ic->journal_io_scatterlist) {  in create_journal()
3977 			ic->sk_requests = kvmalloc_array(ic->journal_sections,  in create_journal()
3980 			if (!ic->sk_requests) {  in create_journal()
3985 			for (i = 0; i < ic->journal_sections; i++) {  in create_journal()
4001 				r = dm_integrity_failed(ic);  in create_journal()
4007 				section_req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
4022 				section_req->cryptlen = (size_t)ic->journal_section_sectors << SECTOR_SHIFT;  in create_journal()
4023 				ic->sk_requests[i] = section_req;  in create_journal()
4034 			if (ic->commit_ids[j] == ic->commit_ids[i]) {  in create_journal()
4035 				ic->commit_ids[i] = cpu_to_le64(le64_to_cpu(ic->commit_ids[i]) + 1);  in create_journal()
4039 		DEBUG_print("commit id %u: %016llx\n", i, ic->commit_ids[i]);  in create_journal()
4042 	journal_tree_size = (__u64)ic->journal_entries * sizeof(struct journal_node);  in create_journal()
4048 	ic->journal_tree = kvmalloc(journal_tree_size, GFP_KERNEL);  in create_journal()
4049 	if (!ic->journal_tree) {  in create_journal()
4087 	struct dm_integrity_c *ic;  in dm_integrity_ctr()  local
4111 	ic = kzalloc(sizeof(struct dm_integrity_c), GFP_KERNEL);  in dm_integrity_ctr()
4112 	if (!ic) {  in dm_integrity_ctr()
4116 	ti->private = ic;  in dm_integrity_ctr()
4118 	ic->ti = ti;  in dm_integrity_ctr()
4120 	ic->in_progress = RB_ROOT;  in dm_integrity_ctr()
4121 	INIT_LIST_HEAD(&ic->wait_list);  in dm_integrity_ctr()
4122 	init_waitqueue_head(&ic->endio_wait);  in dm_integrity_ctr()
4123 	bio_list_init(&ic->flush_bio_list);  in dm_integrity_ctr()
4124 	init_waitqueue_head(&ic->copy_to_journal_wait);  in dm_integrity_ctr()
4125 	init_completion(&ic->crypto_backoff);  in dm_integrity_ctr()
4126 	atomic64_set(&ic->number_of_mismatches, 0);  in dm_integrity_ctr()
4127 	ic->bitmap_flush_interval = BITMAP_FLUSH_INTERVAL;  in dm_integrity_ctr()
4129 	r = dm_get_device(ti, argv[0], dm_table_get_mode(ti->table), &ic->dev);  in dm_integrity_ctr()
4140 	ic->start = start;  in dm_integrity_ctr()
4143 		if (sscanf(argv[2], "%u%c", &ic->tag_size, &dummy) != 1 || !ic->tag_size) {  in dm_integrity_ctr()
4152 		ic->mode = argv[3][0];  in dm_integrity_ctr()
4164 	ic->sectors_per_block = 1;  in dm_integrity_ctr()
4194 			if (ic->meta_dev) {  in dm_integrity_ctr()
4195 				dm_put_device(ti, ic->meta_dev);  in dm_integrity_ctr()
4196 				ic->meta_dev = NULL;  in dm_integrity_ctr()
4199 					  dm_table_get_mode(ti->table), &ic->meta_dev);  in dm_integrity_ctr()
4212 			ic->sectors_per_block = val >> SECTOR_SHIFT;  in dm_integrity_ctr()
4221 			ic->bitmap_flush_interval = msecs_to_jiffies(val);  in dm_integrity_ctr()
4223 			r = get_alg_and_key(opt_string, &ic->internal_hash_alg, &ti->error,  in dm_integrity_ctr()
4228 			r = get_alg_and_key(opt_string, &ic->journal_crypt_alg, &ti->error,  in dm_integrity_ctr()
4233 			r = get_alg_and_key(opt_string, &ic->journal_mac_alg, &ti->error,  in dm_integrity_ctr()
4238 			ic->recalculate_flag = true;  in dm_integrity_ctr()
4240 			ic->recalculate_flag = true;  in dm_integrity_ctr()
4241 			ic->reset_recalculate_flag = true;  in dm_integrity_ctr()
4243 			ic->discard = true;  in dm_integrity_ctr()
4245 			ic->fix_padding = true;  in dm_integrity_ctr()
4247 			ic->fix_hmac = true;  in dm_integrity_ctr()
4249 			ic->legacy_recalculate = true;  in dm_integrity_ctr()
4257 	ic->data_device_sectors = bdev_nr_sectors(ic->dev->bdev);  in dm_integrity_ctr()
4258 	if (!ic->meta_dev)  in dm_integrity_ctr()
4259 		ic->meta_device_sectors = ic->data_device_sectors;  in dm_integrity_ctr()
4261 		ic->meta_device_sectors = bdev_nr_sectors(ic->meta_dev->bdev);  in dm_integrity_ctr()
4265 				      ic->data_device_sectors >> DEFAULT_JOURNAL_SIZE_FACTOR);  in dm_integrity_ctr()
4270 	ic->log2_buffer_sectors = min((int)__fls(buffer_sectors), 31 - SECTOR_SHIFT);  in dm_integrity_ctr()
4272 	r = get_mac(&ic->internal_hash, &ic->internal_hash_alg, &ti->error,  in dm_integrity_ctr()
4277 	r = get_mac(&ic->journal_mac, &ic->journal_mac_alg, &ti->error,  in dm_integrity_ctr()
4282 	if (!ic->tag_size) {  in dm_integrity_ctr()
4283 		if (!ic->internal_hash) {  in dm_integrity_ctr()
4288 		ic->tag_size = crypto_shash_digestsize(ic->internal_hash);  in dm_integrity_ctr()
4290 	if (ic->tag_size > MAX_TAG_SIZE) {  in dm_integrity_ctr()
4295 	if (!(ic->tag_size & (ic->tag_size - 1)))  in dm_integrity_ctr()
4296 		ic->log2_tag_size = __ffs(ic->tag_size);  in dm_integrity_ctr()
4298 		ic->log2_tag_size = -1;  in dm_integrity_ctr()
4300 	if (ic->mode == 'B' && !ic->internal_hash) {  in dm_integrity_ctr()
4306 	if (ic->discard && !ic->internal_hash) {  in dm_integrity_ctr()
4312 	ic->autocommit_jiffies = msecs_to_jiffies(sync_msec);  in dm_integrity_ctr()
4313 	ic->autocommit_msec = sync_msec;  in dm_integrity_ctr()
4314 	timer_setup(&ic->autocommit_timer, autocommit_fn, 0);  in dm_integrity_ctr()
4316 	ic->io = dm_io_client_create();  in dm_integrity_ctr()
4317 	if (IS_ERR(ic->io)) {  in dm_integrity_ctr()
4318 		r = PTR_ERR(ic->io);  in dm_integrity_ctr()
4319 		ic->io = NULL;  in dm_integrity_ctr()
4324 	r = mempool_init_slab_pool(&ic->journal_io_mempool, JOURNAL_IO_MEMPOOL, journal_io_cache);  in dm_integrity_ctr()
4330 	r = mempool_init_page_pool(&ic->recheck_pool, 1, 0);  in dm_integrity_ctr()
4336 	ic->metadata_wq = alloc_workqueue("dm-integrity-metadata",  in dm_integrity_ctr()
4338 	if (!ic->metadata_wq) {  in dm_integrity_ctr()
4348 	ic->wait_wq = alloc_ordered_workqueue("dm-integrity-wait", WQ_MEM_RECLAIM);  in dm_integrity_ctr()
4349 	if (!ic->wait_wq) {  in dm_integrity_ctr()
4355 	ic->offload_wq = alloc_workqueue("dm-integrity-offload", WQ_MEM_RECLAIM,  in dm_integrity_ctr()
4357 	if (!ic->offload_wq) {  in dm_integrity_ctr()
4363 	ic->commit_wq = alloc_workqueue("dm-integrity-commit", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4364 	if (!ic->commit_wq) {  in dm_integrity_ctr()
4369 	INIT_WORK(&ic->commit_work, integrity_commit);  in dm_integrity_ctr()
4371 	if (ic->mode == 'J' || ic->mode == 'B') {  in dm_integrity_ctr()
4372 		ic->writer_wq = alloc_workqueue("dm-integrity-writer", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4373 		if (!ic->writer_wq) {  in dm_integrity_ctr()
4378 		INIT_WORK(&ic->writer_work, integrity_writer);  in dm_integrity_ctr()
4381 	ic->sb = alloc_pages_exact(SB_SECTORS << SECTOR_SHIFT, GFP_KERNEL);  in dm_integrity_ctr()
4382 	if (!ic->sb) {  in dm_integrity_ctr()
4388 	r = sync_rw_sb(ic, REQ_OP_READ);  in dm_integrity_ctr()
4394 	if (memcmp(ic->sb->magic, SB_MAGIC, 8)) {  in dm_integrity_ctr()
4395 		if (ic->mode != 'R') {  in dm_integrity_ctr()
4396 			if (memchr_inv(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT)) {  in dm_integrity_ctr()
4403 		r = initialize_superblock(ic, journal_sectors, interleave_sectors);  in dm_integrity_ctr()
4408 		if (ic->mode != 'R')  in dm_integrity_ctr()
4412 	if (!ic->sb->version || ic->sb->version > SB_VERSION_5) {  in dm_integrity_ctr()
4417 	if (le16_to_cpu(ic->sb->integrity_tag_size) != ic->tag_size) {  in dm_integrity_ctr()
4422 	if (ic->sb->log2_sectors_per_block != __ffs(ic->sectors_per_block)) {  in dm_integrity_ctr()
4427 	if (!le32_to_cpu(ic->sb->journal_sections)) {  in dm_integrity_ctr()
4433 	if (!ic->meta_dev) {  in dm_integrity_ctr()
4434 		if (ic->sb->log2_interleave_sectors < MIN_LOG2_INTERLEAVE_SECTORS ||  in dm_integrity_ctr()
4435 		    ic->sb->log2_interleave_sectors > MAX_LOG2_INTERLEAVE_SECTORS) {  in dm_integrity_ctr()
4441 		if (ic->sb->log2_interleave_sectors) {  in dm_integrity_ctr()
4447 …if (!!(ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC)) != !!ic->journal_mac_alg.alg_string)…  in dm_integrity_ctr()
4453 	get_provided_data_sectors(ic);  in dm_integrity_ctr()
4454 	if (!ic->provided_data_sectors) {  in dm_integrity_ctr()
4461 	r = calculate_device_limits(ic);  in dm_integrity_ctr()
4463 		if (ic->meta_dev) {  in dm_integrity_ctr()
4464 			if (ic->log2_buffer_sectors > 3) {  in dm_integrity_ctr()
4465 				ic->log2_buffer_sectors--;  in dm_integrity_ctr()
4475 	if (log2_sectors_per_bitmap_bit < ic->sb->log2_sectors_per_block)  in dm_integrity_ctr()
4476 		log2_sectors_per_bitmap_bit = ic->sb->log2_sectors_per_block;  in dm_integrity_ctr()
4478 …bits_in_journal = ((__u64)ic->journal_section_sectors * ic->journal_sections) << (SECTOR_SHIFT + 3…  in dm_integrity_ctr()
4481 …while (bits_in_journal < (ic->provided_data_sectors + ((sector_t)1 << log2_sectors_per_bitmap_bit)…  in dm_integrity_ctr()
4484 	log2_blocks_per_bitmap_bit = log2_sectors_per_bitmap_bit - ic->sb->log2_sectors_per_block;  in dm_integrity_ctr()
4485 	ic->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit;  in dm_integrity_ctr()
4487 		ic->sb->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit;  in dm_integrity_ctr()
4489 	n_bitmap_bits = ((ic->provided_data_sectors >> ic->sb->log2_sectors_per_block)  in dm_integrity_ctr()
4491 	ic->n_bitmap_blocks = DIV_ROUND_UP(n_bitmap_bits, BITMAP_BLOCK_SIZE * 8);  in dm_integrity_ctr()
4493 	if (!ic->meta_dev)  in dm_integrity_ctr()
4494 		ic->log2_buffer_sectors = min(ic->log2_buffer_sectors, (__u8)__ffs(ic->metadata_run));  in dm_integrity_ctr()
4496 	if (ti->len > ic->provided_data_sectors) {  in dm_integrity_ctr()
4503 	threshold = (__u64)ic->journal_entries * (100 - journal_watermark);  in dm_integrity_ctr()
4506 	ic->free_sectors_threshold = threshold;  in dm_integrity_ctr()
4509 	DEBUG_print("	integrity_tag_size %u\n", le16_to_cpu(ic->sb->integrity_tag_size));  in dm_integrity_ctr()
4510 	DEBUG_print("	journal_entry_size %u\n", ic->journal_entry_size);  in dm_integrity_ctr()
4511 	DEBUG_print("	journal_entries_per_sector %u\n", ic->journal_entries_per_sector);  in dm_integrity_ctr()
4512 	DEBUG_print("	journal_section_entries %u\n", ic->journal_section_entries);  in dm_integrity_ctr()
4513 	DEBUG_print("	journal_section_sectors %u\n", ic->journal_section_sectors);  in dm_integrity_ctr()
4514 	DEBUG_print("	journal_sections %u\n", (unsigned int)le32_to_cpu(ic->sb->journal_sections));  in dm_integrity_ctr()
4515 	DEBUG_print("	journal_entries %u\n", ic->journal_entries);  in dm_integrity_ctr()
4516 	DEBUG_print("	log2_interleave_sectors %d\n", ic->sb->log2_interleave_sectors);  in dm_integrity_ctr()
4517 	DEBUG_print("	data_device_sectors 0x%llx\n", bdev_nr_sectors(ic->dev->bdev));  in dm_integrity_ctr()
4518 	DEBUG_print("	initial_sectors 0x%x\n", ic->initial_sectors);  in dm_integrity_ctr()
4519 	DEBUG_print("	metadata_run 0x%x\n", ic->metadata_run);  in dm_integrity_ctr()
4520 	DEBUG_print("	log2_metadata_run %d\n", ic->log2_metadata_run);  in dm_integrity_ctr()
4521 …DEBUG_print("	provided_data_sectors 0x%llx (%llu)\n", ic->provided_data_sectors, ic->provided_data…  in dm_integrity_ctr()
4522 	DEBUG_print("	log2_buffer_sectors %u\n", ic->log2_buffer_sectors);  in dm_integrity_ctr()
4525 	if (ic->recalculate_flag && !(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))) {  in dm_integrity_ctr()
4526 		ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_ctr()
4527 		ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_ctr()
4530 	if (ic->internal_hash) {  in dm_integrity_ctr()
4531 		ic->recalc_wq = alloc_workqueue("dm-integrity-recalc", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4532 		if (!ic->recalc_wq) {  in dm_integrity_ctr()
4537 		INIT_WORK(&ic->recalc_work, integrity_recalc);  in dm_integrity_ctr()
4539 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in dm_integrity_ctr()
4546 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_ctr()
4547 	    le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors &&  in dm_integrity_ctr()
4548 	    dm_integrity_disable_recalculate(ic)) {  in dm_integrity_ctr()
4554 	ic->bufio = dm_bufio_client_create(ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev,  in dm_integrity_ctr()
4555 			1U << (SECTOR_SHIFT + ic->log2_buffer_sectors), 1, 0, NULL, NULL, 0);  in dm_integrity_ctr()
4556 	if (IS_ERR(ic->bufio)) {  in dm_integrity_ctr()
4557 		r = PTR_ERR(ic->bufio);  in dm_integrity_ctr()
4559 		ic->bufio = NULL;  in dm_integrity_ctr()
4562 	dm_bufio_set_sector_offset(ic->bufio, ic->start + ic->initial_sectors);  in dm_integrity_ctr()
4564 	if (ic->mode != 'R') {  in dm_integrity_ctr()
4565 		r = create_journal(ic, &ti->error);  in dm_integrity_ctr()
4571 	if (ic->mode == 'B') {  in dm_integrity_ctr()
4573 		unsigned int n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE);  in dm_integrity_ctr()
4575 		ic->recalc_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages);  in dm_integrity_ctr()
4576 		if (!ic->recalc_bitmap) {  in dm_integrity_ctr()
4580 		ic->may_write_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages);  in dm_integrity_ctr()
4581 		if (!ic->may_write_bitmap) {  in dm_integrity_ctr()
4585 		ic->bbs = kvmalloc_array(ic->n_bitmap_blocks, sizeof(struct bitmap_block_status), GFP_KERNEL);  in dm_integrity_ctr()
4586 		if (!ic->bbs) {  in dm_integrity_ctr()
4590 		INIT_DELAYED_WORK(&ic->bitmap_flush_work, bitmap_flush_work);  in dm_integrity_ctr()
4591 		for (i = 0; i < ic->n_bitmap_blocks; i++) {  in dm_integrity_ctr()
4592 			struct bitmap_block_status *bbs = &ic->bbs[i];  in dm_integrity_ctr()
4596 			bbs->ic = ic;  in dm_integrity_ctr()
4605 			bbs->bitmap = lowmem_page_address(ic->journal[pl_index].page) + pl_offset;  in dm_integrity_ctr()
4610 		init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_ctr()
4611 		r = dm_integrity_failed(ic);  in dm_integrity_ctr()
4616 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_ctr()
4621 		ic->just_formatted = true;  in dm_integrity_ctr()
4624 	if (!ic->meta_dev) {  in dm_integrity_ctr()
4625 		r = dm_set_target_max_io_len(ti, 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_ctr()
4629 	if (ic->mode == 'B') {  in dm_integrity_ctr()
4632 …max_io_len = ((sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit) * (BITMAP_BLOCK_S…  in dm_integrity_ctr()
4643 	if (!ic->internal_hash)  in dm_integrity_ctr()
4644 		dm_integrity_set(ti, ic);  in dm_integrity_ctr()
4648 	if (ic->discard)  in dm_integrity_ctr()
4662 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_dtr()  local
4664 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));  in dm_integrity_dtr()
4665 	BUG_ON(!list_empty(&ic->wait_list));  in dm_integrity_dtr()
4667 	if (ic->mode == 'B')  in dm_integrity_dtr()
4668 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_dtr()
4669 	if (ic->metadata_wq)  in dm_integrity_dtr()
4670 		destroy_workqueue(ic->metadata_wq);  in dm_integrity_dtr()
4671 	if (ic->wait_wq)  in dm_integrity_dtr()
4672 		destroy_workqueue(ic->wait_wq);  in dm_integrity_dtr()
4673 	if (ic->offload_wq)  in dm_integrity_dtr()
4674 		destroy_workqueue(ic->offload_wq);  in dm_integrity_dtr()
4675 	if (ic->commit_wq)  in dm_integrity_dtr()
4676 		destroy_workqueue(ic->commit_wq);  in dm_integrity_dtr()
4677 	if (ic->writer_wq)  in dm_integrity_dtr()
4678 		destroy_workqueue(ic->writer_wq);  in dm_integrity_dtr()
4679 	if (ic->recalc_wq)  in dm_integrity_dtr()
4680 		destroy_workqueue(ic->recalc_wq);  in dm_integrity_dtr()
4681 	kvfree(ic->bbs);  in dm_integrity_dtr()
4682 	if (ic->bufio)  in dm_integrity_dtr()
4683 		dm_bufio_client_destroy(ic->bufio);  in dm_integrity_dtr()
4684 	mempool_exit(&ic->recheck_pool);  in dm_integrity_dtr()
4685 	mempool_exit(&ic->journal_io_mempool);  in dm_integrity_dtr()
4686 	if (ic->io)  in dm_integrity_dtr()
4687 		dm_io_client_destroy(ic->io);  in dm_integrity_dtr()
4688 	if (ic->dev)  in dm_integrity_dtr()
4689 		dm_put_device(ti, ic->dev);  in dm_integrity_dtr()
4690 	if (ic->meta_dev)  in dm_integrity_dtr()
4691 		dm_put_device(ti, ic->meta_dev);  in dm_integrity_dtr()
4692 	dm_integrity_free_page_list(ic->journal);  in dm_integrity_dtr()
4693 	dm_integrity_free_page_list(ic->journal_io);  in dm_integrity_dtr()
4694 	dm_integrity_free_page_list(ic->journal_xor);  in dm_integrity_dtr()
4695 	dm_integrity_free_page_list(ic->recalc_bitmap);  in dm_integrity_dtr()
4696 	dm_integrity_free_page_list(ic->may_write_bitmap);  in dm_integrity_dtr()
4697 	if (ic->journal_scatterlist)  in dm_integrity_dtr()
4698 		dm_integrity_free_journal_scatterlist(ic, ic->journal_scatterlist);  in dm_integrity_dtr()
4699 	if (ic->journal_io_scatterlist)  in dm_integrity_dtr()
4700 		dm_integrity_free_journal_scatterlist(ic, ic->journal_io_scatterlist);  in dm_integrity_dtr()
4701 	if (ic->sk_requests) {  in dm_integrity_dtr()
4704 		for (i = 0; i < ic->journal_sections; i++) {  in dm_integrity_dtr()
4707 			req = ic->sk_requests[i];  in dm_integrity_dtr()
4713 		kvfree(ic->sk_requests);  in dm_integrity_dtr()
4715 	kvfree(ic->journal_tree);  in dm_integrity_dtr()
4716 	if (ic->sb)  in dm_integrity_dtr()
4717 		free_pages_exact(ic->sb, SB_SECTORS << SECTOR_SHIFT);  in dm_integrity_dtr()
4719 	if (ic->internal_hash)  in dm_integrity_dtr()
4720 		crypto_free_shash(ic->internal_hash);  in dm_integrity_dtr()
4721 	free_alg(&ic->internal_hash_alg);  in dm_integrity_dtr()
4723 	if (ic->journal_crypt)  in dm_integrity_dtr()
4724 		crypto_free_skcipher(ic->journal_crypt);  in dm_integrity_dtr()
4725 	free_alg(&ic->journal_crypt_alg);  in dm_integrity_dtr()
4727 	if (ic->journal_mac)  in dm_integrity_dtr()
4728 		crypto_free_shash(ic->journal_mac);  in dm_integrity_dtr()
4729 	free_alg(&ic->journal_mac_alg);  in dm_integrity_dtr()
4731 	kfree(ic);  in dm_integrity_dtr()