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 size = crypto_shash_digestsize(ic->journal_mac);  in sb_mac()
501 		dm_integrity_io_error(ic, "digest is too long", -EINVAL);  in sb_mac()
505 	desc->tfm = ic->journal_mac;  in sb_mac()
509 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in sb_mac()
513 	r = crypto_shash_update(desc, (__u8 *)ic->sb, (1 << SECTOR_SHIFT) - size);  in sb_mac()
515 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in sb_mac()
520 		r = crypto_shash_final(desc, (__u8 *)ic->sb + (1 << SECTOR_SHIFT) - size);  in sb_mac()
522 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in sb_mac()
530 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in sb_mac()
533 		if (memcmp((__u8 *)ic->sb + (1 << SECTOR_SHIFT) - size, result, size)) {  in sb_mac()
534 			dm_integrity_io_error(ic, "superblock mac", -EILSEQ);  in sb_mac()
535 			dm_audit_log_target(DM_MSG_PREFIX, "mac-superblock", ic->ti, 0);  in sb_mac()
543 static int sync_rw_sb(struct dm_integrity_c *ic, blk_opf_t opf)  in sync_rw_sb()  argument
552 	io_req.mem.ptr.addr = ic->sb;  in sync_rw_sb()
554 	io_req.client = ic->io;  in sync_rw_sb()
555 	io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev;  in sync_rw_sb()
556 	io_loc.sector = ic->start;  in sync_rw_sb()
560 		sb_set_version(ic);  in sync_rw_sb()
561 		if (ic->journal_mac && ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in sync_rw_sb()
562 			r = sb_mac(ic, true);  in sync_rw_sb()
573 		if (ic->mode != 'R' && ic->journal_mac && ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in sync_rw_sb()
574 			r = sb_mac(ic, false);  in sync_rw_sb()
588 static bool block_bitmap_op(struct dm_integrity_c *ic, struct page_list *bitmap,  in block_bitmap_op()  argument
594 	if (unlikely(((sector | n_sectors) & ((1 << ic->sb->log2_sectors_per_block) - 1)) != 0)) {  in block_bitmap_op()
598 			ic->sb->log2_sectors_per_block,  in block_bitmap_op()
599 			ic->log2_blocks_per_bitmap_bit,  in block_bitmap_op()
607 	bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in block_bitmap_op()
609 		(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in block_bitmap_op()
694 static void block_bitmap_copy(struct dm_integrity_c *ic, struct page_list *dst, struct page_list *s…  in block_bitmap_copy()  argument
696 	unsigned int n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE);  in block_bitmap_copy()
707 static struct bitmap_block_status *sector_to_bitmap_block(struct dm_integrity_c *ic, sector_t secto…  in sector_to_bitmap_block()  argument
709 	unsigned int bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in sector_to_bitmap_block()
712 	BUG_ON(bitmap_block >= ic->n_bitmap_blocks);  in sector_to_bitmap_block()
713 	return &ic->bbs[bitmap_block];  in sector_to_bitmap_block()
716 static void access_journal_check(struct dm_integrity_c *ic, unsigned int section, unsigned int offs…  in access_journal_check()  argument
720 	unsigned int limit = e ? ic->journal_section_entries : ic->journal_section_sectors;  in access_journal_check()
722 	if (unlikely(section >= ic->journal_sections) ||  in access_journal_check()
725 		       function, section, offset, ic->journal_sections, limit);  in access_journal_check()
731 static void page_list_location(struct dm_integrity_c *ic, unsigned int section, unsigned int offset,  in page_list_location()  argument
736 	access_journal_check(ic, section, offset, false, "page_list_location");  in page_list_location()
738 	sector = section * ic->journal_section_sectors + offset;  in page_list_location()
744 static struct journal_sector *access_page_list(struct dm_integrity_c *ic, struct page_list *pl,  in access_page_list()  argument
750 	page_list_location(ic, section, offset, &pl_index, &pl_offset);  in access_page_list()
760 static struct journal_sector *access_journal(struct dm_integrity_c *ic, unsigned int section, unsig…  in access_journal()  argument
762 	return access_page_list(ic, ic->journal, section, offset, NULL);  in access_journal()
765 static struct journal_entry *access_journal_entry(struct dm_integrity_c *ic, unsigned int section, …  in access_journal_entry()  argument
770 	access_journal_check(ic, section, n, true, "access_journal_entry");  in access_journal_entry()
775 	js = access_journal(ic, section, rel_sector);  in access_journal_entry()
776 	return (struct journal_entry *)((char *)js + offset * ic->journal_entry_size);  in access_journal_entry()
779 static struct journal_sector *access_journal_data(struct dm_integrity_c *ic, unsigned int section, …  in access_journal_data()  argument
781 	n <<= ic->sb->log2_sectors_per_block;  in access_journal_data()
785 	access_journal_check(ic, section, n, false, "access_journal_data");  in access_journal_data()
787 	return access_journal(ic, section, n);  in access_journal_data()
790 static void section_mac(struct dm_integrity_c *ic, unsigned int section, __u8 result[JOURNAL_MAC_SI…  in section_mac()  argument
792 	SHASH_DESC_ON_STACK(desc, ic->journal_mac);  in section_mac()
796 	desc->tfm = ic->journal_mac;  in section_mac()
800 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in section_mac()
804 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in section_mac()
807 		r = crypto_shash_update(desc, (__u8 *)&ic->sb->salt, SALT_SIZE);  in section_mac()
809 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
816 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
821 	for (j = 0; j < ic->journal_section_entries; j++) {  in section_mac()
822 		struct journal_entry *je = access_journal_entry(ic, section, j);  in section_mac()
826 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
831 	size = crypto_shash_digestsize(ic->journal_mac);  in section_mac()
836 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in section_mac()
844 			dm_integrity_io_error(ic, "digest_size", -EINVAL);  in section_mac()
849 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in section_mac()
860 static void rw_section_mac(struct dm_integrity_c *ic, unsigned int section, bool wr)  in rw_section_mac()  argument
865 	if (!ic->journal_mac)  in rw_section_mac()
868 	section_mac(ic, section, result);  in rw_section_mac()
871 		struct journal_sector *js = access_journal(ic, section, j);  in rw_section_mac()
877 				dm_integrity_io_error(ic, "journal mac", -EILSEQ);  in rw_section_mac()
878 				dm_audit_log_target(DM_MSG_PREFIX, "mac-journal", ic->ti, 0);  in rw_section_mac()
893 static void xor_journal(struct dm_integrity_c *ic, bool encrypt, unsigned int section,  in xor_journal()  argument
897 	size_t n_bytes = (size_t)(n_sections * ic->journal_section_sectors) << SECTOR_SHIFT;  in xor_journal()
902 		source_pl = ic->journal;  in xor_journal()
903 		target_pl = ic->journal_io;  in xor_journal()
905 		source_pl = ic->journal_io;  in xor_journal()
906 		target_pl = ic->journal;  in xor_journal()
909 	page_list_location(ic, section, 0, &pl_index, &pl_offset);  in xor_journal()
926 				rw_section_mac(ic, section, true);  in xor_journal()
931 			page_list_location(ic, section, 0, &section_index, &dummy);  in xor_journal()
937 		src_pages[1] = ic->journal_xor[pl_index].page;  in xor_journal()
957 			complete(&comp->ic->crypto_backoff);  in complete_journal_encrypt()
960 		dm_integrity_io_error(comp->ic, "asynchronous encrypt", err);  in complete_journal_encrypt()
980 		wait_for_completion(&comp->ic->crypto_backoff);  in do_crypt()
981 		reinit_completion(&comp->ic->crypto_backoff);  in do_crypt()
984 	dm_integrity_io_error(comp->ic, "encrypt", r);  in do_crypt()
988 static void crypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned int section,  in crypt_journal()  argument
997 		source_sg = ic->journal_scatterlist;  in crypt_journal()
998 		target_sg = ic->journal_io_scatterlist;  in crypt_journal()
1000 		source_sg = ic->journal_io_scatterlist;  in crypt_journal()
1001 		target_sg = ic->journal_scatterlist;  in crypt_journal()
1010 			rw_section_mac(ic, section, true);  in crypt_journal()
1012 		req = ic->sk_requests[section];  in crypt_journal()
1013 		ivsize = crypto_skcipher_ivsize(ic->journal_crypt);  in crypt_journal()
1032 static void encrypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned int section,  in encrypt_journal()  argument
1035 	if (ic->journal_xor)  in encrypt_journal()
1036 		return xor_journal(ic, encrypt, section, n_sections, comp);  in encrypt_journal()
1038 		return crypt_journal(ic, encrypt, section, n_sections, comp);  in encrypt_journal()
1046 		dm_integrity_io_error(comp->ic, "writing journal", -EIO);  in complete_journal_io()
1050 static void rw_journal_sectors(struct dm_integrity_c *ic, blk_opf_t opf,  in rw_journal_sectors()  argument
1059 	if (unlikely(dm_integrity_failed(ic))) {  in rw_journal_sectors()
1070 	if (ic->journal_io)  in rw_journal_sectors()
1071 		io_req.mem.ptr.pl = &ic->journal_io[pl_index];  in rw_journal_sectors()
1073 		io_req.mem.ptr.pl = &ic->journal[pl_index];  in rw_journal_sectors()
1081 	io_req.client = ic->io;  in rw_journal_sectors()
1082 	io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev;  in rw_journal_sectors()
1083 	io_loc.sector = ic->start + SB_SECTORS + sector;  in rw_journal_sectors()
1088 		dm_integrity_io_error(ic, (opf & REQ_OP_MASK) == REQ_OP_READ ?  in rw_journal_sectors()
1097 static void rw_journal(struct dm_integrity_c *ic, blk_opf_t opf,  in rw_journal()  argument
1103 	sector = section * ic->journal_section_sectors;  in rw_journal()
1104 	n_sectors = n_sections * ic->journal_section_sectors;  in rw_journal()
1106 	rw_journal_sectors(ic, opf, sector, n_sectors, comp);  in rw_journal()
1109 static void write_journal(struct dm_integrity_c *ic, unsigned int commit_start, unsigned int commit…  in write_journal()  argument
1116 	io_comp.ic = ic;  in write_journal()
1119 	if (commit_start + commit_sections <= ic->journal_sections) {  in write_journal()
1121 		if (ic->journal_io) {  in write_journal()
1122 			crypt_comp_1.ic = ic;  in write_journal()
1125 			encrypt_journal(ic, true, commit_start, commit_sections, &crypt_comp_1);  in write_journal()
1129 				rw_section_mac(ic, commit_start + i, true);  in write_journal()
1131 		rw_journal(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, commit_start,  in write_journal()
1137 		to_end = ic->journal_sections - commit_start;  in write_journal()
1138 		if (ic->journal_io) {  in write_journal()
1139 			crypt_comp_1.ic = ic;  in write_journal()
1142 			encrypt_journal(ic, true, commit_start, to_end, &crypt_comp_1);  in write_journal()
1144 				rw_journal(ic, REQ_OP_WRITE | REQ_FUA,  in write_journal()
1148 				encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_1);  in write_journal()
1151 				crypt_comp_2.ic = ic;  in write_journal()
1154 				encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_2);  in write_journal()
1156 				rw_journal(ic, REQ_OP_WRITE | REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1161 				rw_section_mac(ic, commit_start + i, true);  in write_journal()
1162 			rw_journal(ic, REQ_OP_WRITE | REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1164 				rw_section_mac(ic, i, true);  in write_journal()
1166 		rw_journal(ic, REQ_OP_WRITE | REQ_FUA, 0, commit_sections - to_end, &io_comp);  in write_journal()
1172 static void copy_from_journal(struct dm_integrity_c *ic, unsigned int section, unsigned int offset,  in copy_from_journal()  argument
1180 	BUG_ON((target | n_sectors | offset) & (unsigned int)(ic->sectors_per_block - 1));  in copy_from_journal()
1182 	if (unlikely(dm_integrity_failed(ic))) {  in copy_from_journal()
1187 	sector = section * ic->journal_section_sectors + JOURNAL_BLOCK_SECTORS + offset;  in copy_from_journal()
1194 	io_req.mem.ptr.pl = &ic->journal[pl_index];  in copy_from_journal()
1198 	io_req.client = ic->io;  in copy_from_journal()
1199 	io_loc.bdev = ic->dev->bdev;  in copy_from_journal()
1216 static bool add_new_range(struct dm_integrity_c *ic, struct dm_integrity_range *new_range, bool che…  in add_new_range()  argument
1218 	struct rb_node **n = &ic->in_progress.rb_node;  in add_new_range()
1221 …BUG_ON((new_range->logical_sector | new_range->n_sectors) & (unsigned int)(ic->sectors_per_block -…  in add_new_range()
1226 		list_for_each_entry(range, &ic->wait_list, wait_entry) {  in add_new_range()
1247 	rb_insert_color(&new_range->node, &ic->in_progress);  in add_new_range()
1252 static void remove_range_unlocked(struct dm_integrity_c *ic, struct dm_integrity_range *range)  in remove_range_unlocked()  argument
1254 	rb_erase(&range->node, &ic->in_progress);  in remove_range_unlocked()
1255 	while (unlikely(!list_empty(&ic->wait_list))) {  in remove_range_unlocked()
1257 			list_first_entry(&ic->wait_list, struct dm_integrity_range, wait_entry);  in remove_range_unlocked()
1262 		if (!add_new_range(ic, last_range, false)) {  in remove_range_unlocked()
1264 			list_add(&last_range->wait_entry, &ic->wait_list);  in remove_range_unlocked()
1272 static void remove_range(struct dm_integrity_c *ic, struct dm_integrity_range *range)  in remove_range()  argument
1276 	spin_lock_irqsave(&ic->endio_wait.lock, flags);  in remove_range()
1277 	remove_range_unlocked(ic, range);  in remove_range()
1278 	spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in remove_range()
1281 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
1284 	list_add_tail(&new_range->wait_entry, &ic->wait_list);  in wait_and_add_new_range()
1288 		spin_unlock_irq(&ic->endio_wait.lock);  in wait_and_add_new_range()
1290 		spin_lock_irq(&ic->endio_wait.lock);  in wait_and_add_new_range()
1294 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
1296 	if (unlikely(!add_new_range(ic, new_range, true)))  in add_new_range_and_wait()
1297 		wait_and_add_new_range(ic, new_range);  in add_new_range_and_wait()
1306 static void add_journal_node(struct dm_integrity_c *ic, struct journal_node *node, sector_t sector)  in add_journal_node()  argument
1314 	link = &ic->journal_tree_root.rb_node;  in add_journal_node()
1329 	rb_insert_color(&node->node, &ic->journal_tree_root);  in add_journal_node()
1332 static void remove_journal_node(struct dm_integrity_c *ic, struct journal_node *node)  in remove_journal_node()  argument
1335 	rb_erase(&node->node, &ic->journal_tree_root);  in remove_journal_node()
1341 static unsigned int find_journal_node(struct dm_integrity_c *ic, sector_t sector, sector_t *next_se…  in find_journal_node()  argument
1343 	struct rb_node *n = ic->journal_tree_root.rb_node;  in find_journal_node()
1351 			found = j - ic->journal_tree;  in find_journal_node()
1363 static bool test_journal_node(struct dm_integrity_c *ic, unsigned int pos, sector_t sector)  in test_journal_node()  argument
1368 	if (unlikely(pos >= ic->journal_entries))  in test_journal_node()
1370 	node = &ic->journal_tree[pos];  in test_journal_node()
1384 static bool find_newer_committed_node(struct dm_integrity_c *ic, struct journal_node *node)  in find_newer_committed_node()  argument
1401 	next_section = (unsigned int)(next_node - ic->journal_tree) / ic->journal_section_entries;  in find_newer_committed_node()
1402 	if (next_section >= ic->committed_section &&  in find_newer_committed_node()
1403 	    next_section < ic->committed_section + ic->n_committed_sections)  in find_newer_committed_node()
1405 	if (next_section + ic->journal_sections < ic->committed_section + ic->n_committed_sections)  in find_newer_committed_node()
1415 static int dm_integrity_rw_tag(struct dm_integrity_c *ic, unsigned char *tag, sector_t *metadata_bl…  in dm_integrity_rw_tag()  argument
1421 	unsigned int may_be = MAY_BE_HASH | (ic->discard ? MAY_BE_FILLER : 0);  in dm_integrity_rw_tag()
1429 		r = dm_integrity_failed(ic);  in dm_integrity_rw_tag()
1433 		data = dm_bufio_read(ic->bufio, *metadata_block, &b);  in dm_integrity_rw_tag()
1437 		to_copy = min((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - *metadata_offset, total_size);  in dm_integrity_rw_tag()
1449 			if (likely(is_power_of_2(ic->tag_size))) {  in dm_integrity_rw_tag()
1451 					if (unlikely(!ic->discard) ||  in dm_integrity_rw_tag()
1466 					if (unlikely(hash_offset == ic->tag_size)) {  in dm_integrity_rw_tag()
1472 						may_be = MAY_BE_HASH | (ic->discard ? MAY_BE_FILLER : 0);  in dm_integrity_rw_tag()
1481 		if (unlikely(*metadata_offset == 1U << SECTOR_SHIFT << ic->log2_buffer_sectors)) {  in dm_integrity_rw_tag()
1486 		if (unlikely(!is_power_of_2(ic->tag_size)))  in dm_integrity_rw_tag()
1487 			hash_offset = (hash_offset + to_copy) % ic->tag_size;  in dm_integrity_rw_tag()
1500 	struct dm_integrity_c *ic;  member
1509 		dm_integrity_io_error(fr->ic, "flushing disk cache", -EIO);  in flush_notify()
1513 static void dm_integrity_flush_buffers(struct dm_integrity_c *ic, bool flush_data)  in dm_integrity_flush_buffers()  argument
1518 	if (!ic->meta_dev)  in dm_integrity_flush_buffers()
1526 		fr.io_req.client = dm_bufio_get_dm_io_client(ic->bufio),  in dm_integrity_flush_buffers()
1527 		fr.io_reg.bdev = ic->dev->bdev,  in dm_integrity_flush_buffers()
1530 		fr.ic = ic;  in dm_integrity_flush_buffers()
1536 	r = dm_bufio_write_dirty_buffers(ic->bufio);  in dm_integrity_flush_buffers()
1538 		dm_integrity_io_error(ic, "writing tags", r);  in dm_integrity_flush_buffers()
1544 static void sleep_on_endio_wait(struct dm_integrity_c *ic)  in sleep_on_endio_wait()  argument
1548 	__add_wait_queue(&ic->endio_wait, &wait);  in sleep_on_endio_wait()
1550 	spin_unlock_irq(&ic->endio_wait.lock);  in sleep_on_endio_wait()
1552 	spin_lock_irq(&ic->endio_wait.lock);  in sleep_on_endio_wait()
1553 	__remove_wait_queue(&ic->endio_wait, &wait);  in sleep_on_endio_wait()
1558 	struct dm_integrity_c *ic = from_timer(ic, t, autocommit_timer);  in autocommit_fn()  local
1560 	if (likely(!dm_integrity_failed(ic)))  in autocommit_fn()
1561 		queue_work(ic->commit_wq, &ic->commit_work);  in autocommit_fn()
1564 static void schedule_autocommit(struct dm_integrity_c *ic)  in schedule_autocommit()  argument
1566 	if (!timer_pending(&ic->autocommit_timer))  in schedule_autocommit()
1567 		mod_timer(&ic->autocommit_timer, jiffies + ic->autocommit_jiffies);  in schedule_autocommit()
1570 static void submit_flush_bio(struct dm_integrity_c *ic, struct dm_integrity_io *dio)  in submit_flush_bio()  argument
1575 	spin_lock_irqsave(&ic->endio_wait.lock, flags);  in submit_flush_bio()
1577 	bio_list_add(&ic->flush_bio_list, bio);  in submit_flush_bio()
1578 	spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in submit_flush_bio()
1580 	queue_work(ic->commit_wq, &ic->commit_work);  in submit_flush_bio()
1583 static void do_endio(struct dm_integrity_c *ic, struct bio *bio)  in do_endio()  argument
1587 	r = dm_integrity_failed(ic);  in do_endio()
1590 	if (unlikely(ic->synchronous_mode) && bio_op(bio) == REQ_OP_WRITE) {  in do_endio()
1593 		spin_lock_irqsave(&ic->endio_wait.lock, flags);  in do_endio()
1594 		bio_list_add(&ic->synchronous_bios, bio);  in do_endio()
1595 		queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in do_endio()
1596 		spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in do_endio()
1602 static void do_endio_flush(struct dm_integrity_c *ic, struct dm_integrity_io *dio)  in do_endio_flush()  argument
1606 	if (unlikely(dio->fua) && likely(!bio->bi_status) && likely(!dm_integrity_failed(ic)))  in do_endio_flush()
1607 		submit_flush_bio(ic, dio);  in do_endio_flush()
1609 		do_endio(ic, bio);  in do_endio_flush()
1615 		struct dm_integrity_c *ic = dio->ic;  in dec_in_flight()  local
1618 		remove_range(ic, &dio->range);  in dec_in_flight()
1621 			schedule_autocommit(ic);  in dec_in_flight()
1630 			queue_work(ic->offload_wq, &dio->work);  in dec_in_flight()
1633 		do_endio_flush(ic, dio);  in dec_in_flight()
1651 static void integrity_sector_checksum(struct dm_integrity_c *ic, sector_t sector,  in integrity_sector_checksum()  argument
1655 	SHASH_DESC_ON_STACK(req, ic->internal_hash);  in integrity_sector_checksum()
1659 	req->tfm = ic->internal_hash;  in integrity_sector_checksum()
1663 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in integrity_sector_checksum()
1667 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in integrity_sector_checksum()
1668 		r = crypto_shash_update(req, (__u8 *)&ic->sb->salt, SALT_SIZE);  in integrity_sector_checksum()
1670 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1677 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1681 	r = crypto_shash_update(req, data, ic->sectors_per_block << SECTOR_SHIFT);  in integrity_sector_checksum()
1683 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1689 		dm_integrity_io_error(ic, "crypto_shash_final", r);  in integrity_sector_checksum()
1693 	digest_size = crypto_shash_digestsize(ic->internal_hash);  in integrity_sector_checksum()
1694 	if (unlikely(digest_size < ic->tag_size))  in integrity_sector_checksum()
1695 		memset(result + digest_size, 0, ic->tag_size - digest_size);  in integrity_sector_checksum()
1701 	get_random_bytes(result, ic->tag_size);  in integrity_sector_checksum()
1707 	struct dm_integrity_c *ic = dio->ic;  in integrity_recheck()  local
1713 	get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in integrity_recheck()
1714 	dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset,  in integrity_recheck()
1716 	sector = get_data_sector(ic, area, offset);  in integrity_recheck()
1719 	page = mempool_alloc(&ic->recheck_pool, GFP_NOIO);  in integrity_recheck()
1735 			io_req.client = ic->io;  in integrity_recheck()
1736 			io_loc.bdev = ic->dev->bdev;  in integrity_recheck()
1738 			io_loc.count = ic->sectors_per_block;  in integrity_recheck()
1754 			integrity_sector_checksum(ic, logical_sector, buffer, checksum);  in integrity_recheck()
1755 			r = dm_integrity_rw_tag(ic, checksum, &dio->metadata_block,  in integrity_recheck()
1756 						&dio->metadata_offset, ic->tag_size, TAG_CMP);  in integrity_recheck()
1761 					atomic64_inc(&ic->number_of_mismatches);  in integrity_recheck()
1771 			memcpy(mem + pos, buffer, ic->sectors_per_block << SECTOR_SHIFT);  in integrity_recheck()
1774 			pos += ic->sectors_per_block << SECTOR_SHIFT;  in integrity_recheck()
1775 			sector += ic->sectors_per_block;  in integrity_recheck()
1776 			logical_sector += ic->sectors_per_block;  in integrity_recheck()
1780 	mempool_free(page, &ic->recheck_pool);  in integrity_recheck()
1786 	struct dm_integrity_c *ic = dio->ic;  in integrity_metadata()  local
1790 	if (ic->internal_hash) {  in integrity_metadata()
1793 		unsigned int digest_size = crypto_shash_digestsize(ic->internal_hash);  in integrity_metadata()
1796 		unsigned int extra_space = unlikely(digest_size > ic->tag_size) ? digest_size - ic->tag_size : 0;  in integrity_metadata()
1801 		if (unlikely(ic->mode == 'R'))  in integrity_metadata()
1805 …checksums = kmalloc((PAGE_SIZE >> SECTOR_SHIFT >> ic->sb->log2_sectors_per_block) * ic->tag_size +…  in integrity_metadata()
1821 			unsigned int max_blocks = max_size / ic->tag_size;  in integrity_metadata()
1826 				unsigned int this_step_blocks = bi_size >> (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);  in integrity_metadata()
1829 				r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1830 							this_step_blocks * ic->tag_size, TAG_WRITE);  in integrity_metadata()
1837 				bi_size -= this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);  in integrity_metadata()
1858 				integrity_sector_checksum(ic, sector, mem + pos, checksums_ptr);  in integrity_metadata()
1859 				checksums_ptr += ic->tag_size;  in integrity_metadata()
1860 				sectors_to_process -= ic->sectors_per_block;  in integrity_metadata()
1861 				pos += ic->sectors_per_block << SECTOR_SHIFT;  in integrity_metadata()
1862 				sector += ic->sectors_per_block;  in integrity_metadata()
1866 			r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1898 			sector_to_block(ic, data_to_process);  in integrity_metadata()
1899 			data_to_process *= ic->tag_size;  in integrity_metadata()
1908 				r = dm_integrity_rw_tag(ic, tag, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1928 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_map()  local
1934 	dio->ic = ic;  in dm_integrity_map()
1954 		submit_flush_bio(ic, dio);  in dm_integrity_map()
1967 	if (unlikely(dio->range.logical_sector + bio_sectors(bio) > ic->provided_data_sectors)) {  in dm_integrity_map()
1970 		      ic->provided_data_sectors);  in dm_integrity_map()
1973 …if (unlikely((dio->range.logical_sector | bio_sectors(bio)) & (unsigned int)(ic->sectors_per_block…  in dm_integrity_map()
1975 		      ic->sectors_per_block,  in dm_integrity_map()
1980 	if (ic->sectors_per_block > 1 && likely(dio->op != REQ_OP_DISCARD)) {  in dm_integrity_map()
1985 			if (unlikely(bv.bv_len & ((ic->sectors_per_block << SECTOR_SHIFT) - 1))) {  in dm_integrity_map()
1987 					bv.bv_offset, bv.bv_len, ic->sectors_per_block);  in dm_integrity_map()
1994 	if (!ic->internal_hash) {  in dm_integrity_map()
1996 			unsigned int wanted_tag_size = bio_sectors(bio) >> ic->sb->log2_sectors_per_block;  in dm_integrity_map()
1998 			if (ic->log2_tag_size >= 0)  in dm_integrity_map()
1999 				wanted_tag_size <<= ic->log2_tag_size;  in dm_integrity_map()
2001 				wanted_tag_size *= ic->tag_size;  in dm_integrity_map()
2015 	if (unlikely(ic->mode == 'R') && unlikely(dio->op != REQ_OP_READ))  in dm_integrity_map()
2018 	get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in dm_integrity_map()
2019 	dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset);  in dm_integrity_map()
2020 	bio->bi_iter.bi_sector = get_data_sector(ic, area, offset);  in dm_integrity_map()
2029 	struct dm_integrity_c *ic = dio->ic;  in __journal_read_write()  local
2049 			struct journal_entry *je = access_journal_entry(ic, journal_section, journal_entry);  in __journal_read_write()
2060 					__io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je));  in __journal_read_write()
2065 				js = access_journal_data(ic, journal_section, journal_entry);  in __journal_read_write()
2073 				} while (++s < ic->sectors_per_block);  in __journal_read_write()
2075 				if (ic->internal_hash) {  in __journal_read_write()
2078 					integrity_sector_checksum(ic, logical_sector, mem + bv.bv_offset, checksums_onstack);  in __journal_read_write()
2079 					if (unlikely(memcmp(checksums_onstack, journal_entry_tag(ic, je), ic->tag_size))) {  in __journal_read_write()
2089 			if (!ic->internal_hash) {  in __journal_read_write()
2091 				unsigned int tag_todo = ic->tag_size;  in __journal_read_write()
2092 				char *tag_ptr = journal_entry_tag(ic, je);  in __journal_read_write()
2118 				js = access_journal_data(ic, journal_section, journal_entry);  in __journal_read_write()
2119 				memcpy(js, mem + bv.bv_offset, ic->sectors_per_block << SECTOR_SHIFT);  in __journal_read_write()
2124 				} while (++s < ic->sectors_per_block);  in __journal_read_write()
2126 				if (ic->internal_hash) {  in __journal_read_write()
2127 					unsigned int digest_size = crypto_shash_digestsize(ic->internal_hash);  in __journal_read_write()
2129 					if (unlikely(digest_size > ic->tag_size)) {  in __journal_read_write()
2132 						integrity_sector_checksum(ic, logical_sector, (char *)js, checksums_onstack);  in __journal_read_write()
2133 						memcpy(journal_entry_tag(ic, je), checksums_onstack, ic->tag_size);  in __journal_read_write()
2135 						integrity_sector_checksum(ic, logical_sector, (char *)js, journal_entry_tag(ic, je));  in __journal_read_write()
2140 			logical_sector += ic->sectors_per_block;  in __journal_read_write()
2143 			if (unlikely(journal_entry == ic->journal_section_entries)) {  in __journal_read_write()
2146 				wraparound_section(ic, &journal_section);  in __journal_read_write()
2149 			bv.bv_offset += ic->sectors_per_block << SECTOR_SHIFT;  in __journal_read_write()
2150 		} while (bv.bv_len -= ic->sectors_per_block << SECTOR_SHIFT);  in __journal_read_write()
2159 		if (unlikely(waitqueue_active(&ic->copy_to_journal_wait)))  in __journal_read_write()
2160 			wake_up(&ic->copy_to_journal_wait);  in __journal_read_write()
2161 		if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold)  in __journal_read_write()
2162 			queue_work(ic->commit_wq, &ic->commit_work);  in __journal_read_write()
2164 			schedule_autocommit(ic);  in __journal_read_write()
2166 		remove_range(ic, &dio->range);  in __journal_read_write()
2172 		get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in __journal_read_write()
2173 		dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset);  in __journal_read_write()
2182 	struct dm_integrity_c *ic = dio->ic;  in dm_integrity_map_continue()  local
2189 	bool need_sync_io = ic->internal_hash && dio->op == REQ_OP_READ;  in dm_integrity_map_continue()
2191 	if (unlikely(dio->op == REQ_OP_DISCARD) && ic->mode != 'D')  in dm_integrity_map_continue()
2196 		queue_work(ic->offload_wq, &dio->work);  in dm_integrity_map_continue()
2201 	spin_lock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2203 	if (unlikely(dm_integrity_failed(ic))) {  in dm_integrity_map_continue()
2204 		spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2205 		do_endio(ic, bio);  in dm_integrity_map_continue()
2210 	if (ic->mode == 'J' && likely(dio->op != REQ_OP_DISCARD)) {  in dm_integrity_map_continue()
2216 						   (sector_t)ic->free_sectors << ic->sb->log2_sectors_per_block);  in dm_integrity_map_continue()
2220 				sleep_on_endio_wait(ic);  in dm_integrity_map_continue()
2223 			range_sectors = dio->range.n_sectors >> ic->sb->log2_sectors_per_block;  in dm_integrity_map_continue()
2224 			ic->free_sectors -= range_sectors;  in dm_integrity_map_continue()
2225 			journal_section = ic->free_section;  in dm_integrity_map_continue()
2226 			journal_entry = ic->free_section_entry;  in dm_integrity_map_continue()
2228 			next_entry = ic->free_section_entry + range_sectors;  in dm_integrity_map_continue()
2229 			ic->free_section_entry = next_entry % ic->journal_section_entries;  in dm_integrity_map_continue()
2230 			ic->free_section += next_entry / ic->journal_section_entries;  in dm_integrity_map_continue()
2231 			ic->n_uncommitted_sections += next_entry / ic->journal_section_entries;  in dm_integrity_map_continue()
2232 			wraparound_section(ic, &ic->free_section);  in dm_integrity_map_continue()
2234 			pos = journal_section * ic->journal_section_entries + journal_entry;  in dm_integrity_map_continue()
2241 				add_journal_node(ic, &ic->journal_tree[pos], dio->range.logical_sector + i);  in dm_integrity_map_continue()
2243 				if (unlikely(pos >= ic->journal_entries))  in dm_integrity_map_continue()
2246 				je = access_journal_entry(ic, ws, we);  in dm_integrity_map_continue()
2250 				if (unlikely(we == ic->journal_section_entries)) {  in dm_integrity_map_continue()
2253 					wraparound_section(ic, &ws);  in dm_integrity_map_continue()
2255 			} while ((i += ic->sectors_per_block) < dio->range.n_sectors);  in dm_integrity_map_continue()
2257 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2262 			journal_read_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2270 				for (i = ic->sectors_per_block; i < dio->range.n_sectors; i += ic->sectors_per_block, jp++) {  in dm_integrity_map_continue()
2271 					if (!test_journal_node(ic, jp, dio->range.logical_sector + i))  in dm_integrity_map_continue()
2278 	if (unlikely(!add_new_range(ic, &dio->range, true))) {  in dm_integrity_map_continue()
2286 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2288 			queue_work(ic->wait_wq, &dio->work);  in dm_integrity_map_continue()
2292 			dio->range.n_sectors = ic->sectors_per_block;  in dm_integrity_map_continue()
2293 		wait_and_add_new_range(ic, &dio->range);  in dm_integrity_map_continue()
2303 			new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2305 				remove_range_unlocked(ic, &dio->range);  in dm_integrity_map_continue()
2310 	if (ic->mode == 'J' && likely(dio->op == REQ_OP_DISCARD) && !discard_retried) {  in dm_integrity_map_continue()
2314 		new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2317 			remove_range_unlocked(ic, &dio->range);  in dm_integrity_map_continue()
2318 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2319 			queue_work(ic->commit_wq, &ic->commit_work);  in dm_integrity_map_continue()
2320 			flush_workqueue(ic->commit_wq);  in dm_integrity_map_continue()
2321 			queue_work(ic->writer_wq, &ic->writer_work);  in dm_integrity_map_continue()
2322 			flush_workqueue(ic->writer_wq);  in dm_integrity_map_continue()
2327 	recalc_sector = le64_to_cpu(ic->sb->recalc_sector);  in dm_integrity_map_continue()
2328 	spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2331 		journal_section = journal_read_pos / ic->journal_section_entries;  in dm_integrity_map_continue()
2332 		journal_entry = journal_read_pos % ic->journal_section_entries;  in dm_integrity_map_continue()
2336 	if (ic->mode == 'B' && (dio->op == REQ_OP_WRITE || unlikely(dio->op == REQ_OP_DISCARD))) {  in dm_integrity_map_continue()
2337 		if (!block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in dm_integrity_map_continue()
2341 			bbs = sector_to_bitmap_block(ic, dio->range.logical_sector);  in dm_integrity_map_continue()
2345 			queue_work(ic->writer_wq, &bbs->work);  in dm_integrity_map_continue()
2359 	bio_set_dev(bio, ic->dev->bdev);  in dm_integrity_map_continue()
2365 	if (unlikely(dio->op == REQ_OP_DISCARD) && likely(ic->mode != 'D')) {  in dm_integrity_map_continue()
2367 		dm_integrity_flush_buffers(ic, false);  in dm_integrity_map_continue()
2381 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_map_continue()
2384 		if (ic->mode == 'B') {  in dm_integrity_map_continue()
2385 			if (!block_bitmap_op(ic, ic->recalc_bitmap, dio->range.logical_sector,  in dm_integrity_map_continue()
2397 		queue_work(ic->metadata_wq, &dio->work);  in dm_integrity_map_continue()
2406 	do_endio_flush(ic, dio);  in dm_integrity_map_continue()
2417 static void pad_uncommitted(struct dm_integrity_c *ic)  in pad_uncommitted()  argument
2419 	if (ic->free_section_entry) {  in pad_uncommitted()
2420 		ic->free_sectors -= ic->journal_section_entries - ic->free_section_entry;  in pad_uncommitted()
2421 		ic->free_section_entry = 0;  in pad_uncommitted()
2422 		ic->free_section++;  in pad_uncommitted()
2423 		wraparound_section(ic, &ic->free_section);  in pad_uncommitted()
2424 		ic->n_uncommitted_sections++;  in pad_uncommitted()
2426 	if (WARN_ON(ic->journal_sections * ic->journal_section_entries !=  in pad_uncommitted()
2427 		    (ic->n_uncommitted_sections + ic->n_committed_sections) *  in pad_uncommitted()
2428 		    ic->journal_section_entries + ic->free_sectors)) {  in pad_uncommitted()
2432 		       ic->journal_sections, ic->journal_section_entries,  in pad_uncommitted()
2433 		       ic->n_uncommitted_sections, ic->n_committed_sections,  in pad_uncommitted()
2434 		       ic->journal_section_entries, ic->free_sectors);  in pad_uncommitted()
2440 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, commit_work);  in integrity_commit()  local
2445 	del_timer(&ic->autocommit_timer);  in integrity_commit()
2447 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_commit()
2448 	flushes = bio_list_get(&ic->flush_bio_list);  in integrity_commit()
2449 	if (unlikely(ic->mode != 'J')) {  in integrity_commit()
2450 		spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2451 		dm_integrity_flush_buffers(ic, true);  in integrity_commit()
2455 	pad_uncommitted(ic);  in integrity_commit()
2456 	commit_start = ic->uncommitted_section;  in integrity_commit()
2457 	commit_sections = ic->n_uncommitted_sections;  in integrity_commit()
2458 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2463 	ic->wrote_to_journal = true;  in integrity_commit()
2467 		for (j = 0; j < ic->journal_section_entries; j++) {  in integrity_commit()
2470 			je = access_journal_entry(ic, i, j);  in integrity_commit()
2471 			io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je));  in integrity_commit()
2473 		for (j = 0; j < ic->journal_section_sectors; j++) {  in integrity_commit()
2476 			js = access_journal(ic, i, j);  in integrity_commit()
2477 			js->commit_id = dm_integrity_commit_id(ic, i, j, ic->commit_seq);  in integrity_commit()
2480 		if (unlikely(i >= ic->journal_sections))  in integrity_commit()
2481 			ic->commit_seq = next_commit_seq(ic->commit_seq);  in integrity_commit()
2482 		wraparound_section(ic, &i);  in integrity_commit()
2486 	write_journal(ic, commit_start, commit_sections);  in integrity_commit()
2488 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_commit()
2489 	ic->uncommitted_section += commit_sections;  in integrity_commit()
2490 	wraparound_section(ic, &ic->uncommitted_section);  in integrity_commit()
2491 	ic->n_uncommitted_sections -= commit_sections;  in integrity_commit()
2492 	ic->n_committed_sections += commit_sections;  in integrity_commit()
2493 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2495 	if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold)  in integrity_commit()
2496 		queue_work(ic->writer_wq, &ic->writer_work);  in integrity_commit()
2503 		do_endio(ic, flushes);  in integrity_commit()
2512 	struct dm_integrity_c *ic = comp->ic;  in complete_copy_from_journal()  local
2514 	remove_range(ic, &io->range);  in complete_copy_from_journal()
2515 	mempool_free(io, &ic->journal_io_mempool);  in complete_copy_from_journal()
2517 		dm_integrity_io_error(ic, "copying from journal", -EIO);  in complete_copy_from_journal()
2521 static void restore_last_bytes(struct dm_integrity_c *ic, struct journal_sector *js,  in restore_last_bytes()  argument
2529 	} while (++s < ic->sectors_per_block);  in restore_last_bytes()
2532 static void do_journal_write(struct dm_integrity_c *ic, unsigned int write_start,  in do_journal_write()  argument
2541 	comp.ic = ic;  in do_journal_write()
2546 	for (n = 0; n < write_sections; n++, i++, wraparound_section(ic, &i)) {  in do_journal_write()
2550 			rw_section_mac(ic, i, false);  in do_journal_write()
2551 		for (j = 0; j < ic->journal_section_entries; j++) {  in do_journal_write()
2552 			struct journal_entry *je = access_journal_entry(ic, i, j);  in do_journal_write()
2564 				if (unlikely(sec & (unsigned int)(ic->sectors_per_block - 1))) {  in do_journal_write()
2565 					dm_integrity_io_error(ic, "invalid sector in journal", -EIO);  in do_journal_write()
2566 					sec &= ~(sector_t)(ic->sectors_per_block - 1);  in do_journal_write()
2568 				if (unlikely(sec >= ic->provided_data_sectors)) {  in do_journal_write()
2573 			get_area_and_offset(ic, sec, &area, &offset);  in do_journal_write()
2574 			restore_last_bytes(ic, access_journal_data(ic, i, j), je);  in do_journal_write()
2575 			for (k = j + 1; k < ic->journal_section_entries; k++) {  in do_journal_write()
2576 				struct journal_entry *je2 = access_journal_entry(ic, i, k);  in do_journal_write()
2583 				if (unlikely(sec2 >= ic->provided_data_sectors))  in do_journal_write()
2585 				get_area_and_offset(ic, sec2, &area2, &offset2);  in do_journal_write()
2586 				if (area2 != area || offset2 != offset + ((k - j) << ic->sb->log2_sectors_per_block))  in do_journal_write()
2588 				restore_last_bytes(ic, access_journal_data(ic, i, k), je2);  in do_journal_write()
2592 			io = mempool_alloc(&ic->journal_io_mempool, GFP_NOIO);  in do_journal_write()
2595 			io->range.n_sectors = (k - j) << ic->sb->log2_sectors_per_block;  in do_journal_write()
2597 			spin_lock_irq(&ic->endio_wait.lock);  in do_journal_write()
2598 			add_new_range_and_wait(ic, &io->range);  in do_journal_write()
2601 				struct journal_node *section_node = &ic->journal_tree[i * ic->journal_section_entries];  in do_journal_write()
2604 				while (j < k && find_newer_committed_node(ic, &section_node[j])) {  in do_journal_write()
2605 					struct journal_entry *je2 = access_journal_entry(ic, i, j);  in do_journal_write()
2608 					remove_journal_node(ic, &section_node[j]);  in do_journal_write()
2610 					sec += ic->sectors_per_block;  in do_journal_write()
2611 					offset += ic->sectors_per_block;  in do_journal_write()
2613 				while (j < k && find_newer_committed_node(ic, &section_node[k - 1])) {  in do_journal_write()
2614 					struct journal_entry *je2 = access_journal_entry(ic, i, k - 1);  in do_journal_write()
2617 					remove_journal_node(ic, &section_node[k - 1]);  in do_journal_write()
2621 					remove_range_unlocked(ic, &io->range);  in do_journal_write()
2622 					spin_unlock_irq(&ic->endio_wait.lock);  in do_journal_write()
2623 					mempool_free(io, &ic->journal_io_mempool);  in do_journal_write()
2627 					remove_journal_node(ic, &section_node[l]);  in do_journal_write()
2629 			spin_unlock_irq(&ic->endio_wait.lock);  in do_journal_write()
2631 			metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset);  in do_journal_write()
2634 				struct journal_entry *je2 = access_journal_entry(ic, i, l);  in do_journal_write()
2640 				    ic->internal_hash) {  in do_journal_write()
2643 					integrity_sector_checksum(ic, sec + ((l - j) << ic->sb->log2_sectors_per_block),  in do_journal_write()
2644 								  (char *)access_journal_data(ic, i, l), test_tag);  in do_journal_write()
2645 					if (unlikely(memcmp(test_tag, journal_entry_tag(ic, je2), ic->tag_size))) {  in do_journal_write()
2646 						dm_integrity_io_error(ic, "tag mismatch when replaying journal", -EILSEQ);  in do_journal_write()
2647 						dm_audit_log_target(DM_MSG_PREFIX, "integrity-replay-journal", ic->ti, 0);  in do_journal_write()
2652 				r = dm_integrity_rw_tag(ic, journal_entry_tag(ic, je2), &metadata_block, &metadata_offset,  in do_journal_write()
2653 							ic->tag_size, TAG_WRITE);  in do_journal_write()
2655 					dm_integrity_io_error(ic, "reading tags", r);  in do_journal_write()
2659 			copy_from_journal(ic, i, j << ic->sb->log2_sectors_per_block,  in do_journal_write()
2660 					  (k - j) << ic->sb->log2_sectors_per_block,  in do_journal_write()
2661 					  get_data_sector(ic, area, offset),  in do_journal_write()
2668 	dm_bufio_write_dirty_buffers_async(ic->bufio);  in do_journal_write()
2675 	dm_integrity_flush_buffers(ic, true);  in do_journal_write()
2680 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, writer_work);  in integrity_writer()  local
2684 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_writer()
2685 	write_start = ic->committed_section;  in integrity_writer()
2686 	write_sections = ic->n_committed_sections;  in integrity_writer()
2687 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_writer()
2692 	do_journal_write(ic, write_start, write_sections, false);  in integrity_writer()
2694 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_writer()
2696 	ic->committed_section += write_sections;  in integrity_writer()
2697 	wraparound_section(ic, &ic->committed_section);  in integrity_writer()
2698 	ic->n_committed_sections -= write_sections;  in integrity_writer()
2700 	prev_free_sectors = ic->free_sectors;  in integrity_writer()
2701 	ic->free_sectors += write_sections * ic->journal_section_entries;  in integrity_writer()
2703 		wake_up_locked(&ic->endio_wait);  in integrity_writer()
2705 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_writer()
2708 static void recalc_write_super(struct dm_integrity_c *ic)  in recalc_write_super()  argument
2712 	dm_integrity_flush_buffers(ic, false);  in recalc_write_super()
2713 	if (dm_integrity_failed(ic))  in recalc_write_super()
2716 	r = sync_rw_sb(ic, REQ_OP_WRITE);  in recalc_write_super()
2718 		dm_integrity_io_error(ic, "writing superblock", r);  in recalc_write_super()
2723 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, recalc_work);  in integrity_recalc()  local
2745 		if (recalc_sectors >= 1U << ic->sb->log2_sectors_per_block)  in integrity_recalc()
2750 	recalc_tags_size = (recalc_sectors >> ic->sb->log2_sectors_per_block) * ic->tag_size;  in integrity_recalc()
2751 	if (crypto_shash_digestsize(ic->internal_hash) > ic->tag_size)  in integrity_recalc()
2752 		recalc_tags_size += crypto_shash_digestsize(ic->internal_hash) - ic->tag_size;  in integrity_recalc()
2760 	DEBUG_print("start recalculation... (position %llx)\n", le64_to_cpu(ic->sb->recalc_sector));  in integrity_recalc()
2762 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2766 	if (unlikely(dm_post_suspending(ic->ti)))  in integrity_recalc()
2769 	range.logical_sector = le64_to_cpu(ic->sb->recalc_sector);  in integrity_recalc()
2770 	if (unlikely(range.logical_sector >= ic->provided_data_sectors)) {  in integrity_recalc()
2771 		if (ic->mode == 'B') {  in integrity_recalc()
2772 			block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in integrity_recalc()
2774 			queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in integrity_recalc()
2779 	get_area_and_offset(ic, range.logical_sector, &area, &offset);  in integrity_recalc()
2780 	range.n_sectors = min((sector_t)recalc_sectors, ic->provided_data_sectors - range.logical_sector);  in integrity_recalc()
2781 	if (!ic->meta_dev)  in integrity_recalc()
2782 …range.n_sectors = min(range.n_sectors, ((sector_t)1U << ic->sb->log2_interleave_sectors) - (unsign…  in integrity_recalc()
2784 	add_new_range_and_wait(ic, &range);  in integrity_recalc()
2785 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2789 	if (ic->mode == 'B') {  in integrity_recalc()
2790 		if (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector, n_sectors, BITMAP_OP_TEST_ALL_CLEAR))  in integrity_recalc()
2793 		while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector,  in integrity_recalc()
2794 				       ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2795 			logical_sector += ic->sectors_per_block;  in integrity_recalc()
2796 			n_sectors -= ic->sectors_per_block;  in integrity_recalc()
2799 		while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector + n_sectors - ic->sectors_per_block,  in integrity_recalc()
2800 				       ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2801 			n_sectors -= ic->sectors_per_block;  in integrity_recalc()
2804 		get_area_and_offset(ic, logical_sector, &area, &offset);  in integrity_recalc()
2810 		recalc_write_super(ic);  in integrity_recalc()
2811 		if (ic->mode == 'B')  in integrity_recalc()
2812 			queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval);  in integrity_recalc()
2817 	if (unlikely(dm_integrity_failed(ic)))  in integrity_recalc()
2824 	io_req.client = ic->io;  in integrity_recalc()
2825 	io_loc.bdev = ic->dev->bdev;  in integrity_recalc()
2826 	io_loc.sector = get_data_sector(ic, area, offset);  in integrity_recalc()
2831 		dm_integrity_io_error(ic, "reading data", r);  in integrity_recalc()
2836 	for (i = 0; i < n_sectors; i += ic->sectors_per_block) {  in integrity_recalc()
2837 		integrity_sector_checksum(ic, logical_sector + i, recalc_buffer + (i << SECTOR_SHIFT), t);  in integrity_recalc()
2838 		t += ic->tag_size;  in integrity_recalc()
2841 	metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset);  in integrity_recalc()
2843 …r = dm_integrity_rw_tag(ic, recalc_tags, &metadata_block, &metadata_offset, t - recalc_tags, TAG_W…  in integrity_recalc()
2845 		dm_integrity_io_error(ic, "writing tags", r);  in integrity_recalc()
2849 	if (ic->mode == 'B') {  in integrity_recalc()
2853 			 (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) <<  in integrity_recalc()
2854 			(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in integrity_recalc()
2856 		       (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) <<  in integrity_recalc()
2857 			(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in integrity_recalc()
2858 		block_bitmap_op(ic, ic->recalc_bitmap, start, end - start, BITMAP_OP_CLEAR);  in integrity_recalc()
2864 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2865 	remove_range_unlocked(ic, &range);  in integrity_recalc()
2866 	ic->sb->recalc_sector = cpu_to_le64(range.logical_sector + range.n_sectors);  in integrity_recalc()
2870 	remove_range(ic, &range);  in integrity_recalc()
2874 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2876 	recalc_write_super(ic);  in integrity_recalc()
2886 	struct dm_integrity_c *ic = bbs->ic;  in bitmap_block_work()  local
2903 		if (block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in bitmap_block_work()
2905 			remove_range(ic, &dio->range);  in bitmap_block_work()
2907 			queue_work(ic->offload_wq, &dio->work);  in bitmap_block_work()
2909 			block_bitmap_op(ic, ic->journal, dio->range.logical_sector,  in bitmap_block_work()
2918 	rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC,  in bitmap_block_work()
2925 		block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in bitmap_block_work()
2928 		remove_range(ic, &dio->range);  in bitmap_block_work()
2930 		queue_work(ic->offload_wq, &dio->work);  in bitmap_block_work()
2933 	queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval);  in bitmap_block_work()
2938 	struct dm_integrity_c *ic = container_of(work, struct dm_integrity_c, bitmap_flush_work.work);  in bitmap_flush_work()  local
2943 	dm_integrity_flush_buffers(ic, false);  in bitmap_flush_work()
2946 	range.n_sectors = ic->provided_data_sectors;  in bitmap_flush_work()
2948 	spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2949 	add_new_range_and_wait(ic, &range);  in bitmap_flush_work()
2950 	spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2952 	dm_integrity_flush_buffers(ic, true);  in bitmap_flush_work()
2954 	limit = ic->provided_data_sectors;  in bitmap_flush_work()
2955 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in bitmap_flush_work()
2956 		limit = le64_to_cpu(ic->sb->recalc_sector)  in bitmap_flush_work()
2957 			>> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)  in bitmap_flush_work()
2958 			<< (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in bitmap_flush_work()
2961 	block_bitmap_op(ic, ic->journal, 0, limit, BITMAP_OP_CLEAR);  in bitmap_flush_work()
2962 	block_bitmap_op(ic, ic->may_write_bitmap, 0, limit, BITMAP_OP_CLEAR);  in bitmap_flush_work()
2964 	rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in bitmap_flush_work()
2965 			   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in bitmap_flush_work()
2967 	spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2968 	remove_range_unlocked(ic, &range);  in bitmap_flush_work()
2969 	while (unlikely((bio = bio_list_pop(&ic->synchronous_bios)) != NULL)) {  in bitmap_flush_work()
2971 		spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2972 		spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2974 	spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2978 static void init_journal(struct dm_integrity_c *ic, unsigned int start_section,  in init_journal()  argument
2988 		wraparound_section(ic, &i);  in init_journal()
2989 		for (j = 0; j < ic->journal_section_sectors; j++) {  in init_journal()
2990 			struct journal_sector *js = access_journal(ic, i, j);  in init_journal()
2994 			js->commit_id = dm_integrity_commit_id(ic, i, j, commit_seq);  in init_journal()
2996 		for (j = 0; j < ic->journal_section_entries; j++) {  in init_journal()
2997 			struct journal_entry *je = access_journal_entry(ic, i, j);  in init_journal()
3003 	write_journal(ic, start_section, n_sections);  in init_journal()
3006 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
3011 		if (dm_integrity_commit_id(ic, i, j, k) == id)  in find_commit_seq()
3014 	dm_integrity_io_error(ic, "journal commit id", -EIO);  in find_commit_seq()
3018 static void replay_journal(struct dm_integrity_c *ic)  in replay_journal()  argument
3028 	if (ic->mode == 'R')  in replay_journal()
3031 	if (ic->journal_uptodate)  in replay_journal()
3037 	if (!ic->just_formatted) {  in replay_journal()
3039 		rw_journal(ic, REQ_OP_READ, 0, ic->journal_sections, NULL);  in replay_journal()
3040 		if (ic->journal_io)  in replay_journal()
3041 			DEBUG_bytes(lowmem_page_address(ic->journal_io[0].page), 64, "read journal");  in replay_journal()
3042 		if (ic->journal_io) {  in replay_journal()
3045 			crypt_comp.ic = ic;  in replay_journal()
3048 			encrypt_journal(ic, false, 0, ic->journal_sections, &crypt_comp);  in replay_journal()
3051 		DEBUG_bytes(lowmem_page_address(ic->journal[0].page), 64, "decrypted journal");  in replay_journal()
3054 	if (dm_integrity_failed(ic))  in replay_journal()
3060 	for (i = 0; i < ic->journal_sections; i++) {  in replay_journal()
3061 		for (j = 0; j < ic->journal_section_sectors; j++) {  in replay_journal()
3063 			struct journal_sector *js = access_journal(ic, i, j);  in replay_journal()
3065 			k = find_commit_seq(ic, i, j, js->commit_id);  in replay_journal()
3072 			for (j = 0; j < ic->journal_section_entries; j++) {  in replay_journal()
3073 				struct journal_entry *je = access_journal_entry(ic, i, j);  in replay_journal()
3092 			dm_integrity_io_error(ic, "journal commit ids", -EIO);  in replay_journal()
3107 	if (unlikely(write_start >= ic->journal_sections))  in replay_journal()
3109 	wraparound_section(ic, &write_start);  in replay_journal()
3112 	for (write_sections = 0; write_sections < ic->journal_sections; write_sections++) {  in replay_journal()
3113 		for (j = 0; j < ic->journal_section_sectors; j++) {  in replay_journal()
3114 			struct journal_sector *js = access_journal(ic, i, j);  in replay_journal()
3116 			if (js->commit_id != dm_integrity_commit_id(ic, i, j, want_commit_seq)) {  in replay_journal()
3123 					    i, j, find_commit_seq(ic, i, j, js->commit_id), want_commit_seq);  in replay_journal()
3128 		if (unlikely(i >= ic->journal_sections))  in replay_journal()
3130 		wraparound_section(ic, &i);  in replay_journal()
3137 		do_journal_write(ic, write_start, write_sections, true);  in replay_journal()
3140 	if (write_sections == ic->journal_sections && (ic->mode == 'J' || journal_empty)) {  in replay_journal()
3142 		ic->commit_seq = want_commit_seq;  in replay_journal()
3143 		DEBUG_print("continuing from section %u, commit seq %d\n", write_start, ic->commit_seq);  in replay_journal()
3153 		init_journal(ic, s, 1, erase_seq);  in replay_journal()
3155 		wraparound_section(ic, &s);  in replay_journal()
3156 		if (ic->journal_sections >= 2) {  in replay_journal()
3157 			init_journal(ic, s, ic->journal_sections - 2, erase_seq);  in replay_journal()
3158 			s += ic->journal_sections - 2;  in replay_journal()
3159 			wraparound_section(ic, &s);  in replay_journal()
3160 			init_journal(ic, s, 1, erase_seq);  in replay_journal()
3164 		ic->commit_seq = next_commit_seq(erase_seq);  in replay_journal()
3167 	ic->committed_section = continue_section;  in replay_journal()
3168 	ic->n_committed_sections = 0;  in replay_journal()
3170 	ic->uncommitted_section = continue_section;  in replay_journal()
3171 	ic->n_uncommitted_sections = 0;  in replay_journal()
3173 	ic->free_section = continue_section;  in replay_journal()
3174 	ic->free_section_entry = 0;  in replay_journal()
3175 	ic->free_sectors = ic->journal_entries;  in replay_journal()
3177 	ic->journal_tree_root = RB_ROOT;  in replay_journal()
3178 	for (i = 0; i < ic->journal_entries; i++)  in replay_journal()
3179 		init_journal_node(&ic->journal_tree[i]);  in replay_journal()
3182 static void dm_integrity_enter_synchronous_mode(struct dm_integrity_c *ic)  in dm_integrity_enter_synchronous_mode()  argument
3186 	if (ic->mode == 'B') {  in dm_integrity_enter_synchronous_mode()
3187 		ic->bitmap_flush_interval = msecs_to_jiffies(10) + 1;  in dm_integrity_enter_synchronous_mode()
3188 		ic->synchronous_mode = 1;  in dm_integrity_enter_synchronous_mode()
3190 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_enter_synchronous_mode()
3191 		queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in dm_integrity_enter_synchronous_mode()
3192 		flush_workqueue(ic->commit_wq);  in dm_integrity_enter_synchronous_mode()
3198 	struct dm_integrity_c *ic = container_of(n, struct dm_integrity_c, reboot_notifier);  in dm_integrity_reboot()  local
3202 	dm_integrity_enter_synchronous_mode(ic);  in dm_integrity_reboot()
3209 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_postsuspend()  local
3212 	WARN_ON(unregister_reboot_notifier(&ic->reboot_notifier));  in dm_integrity_postsuspend()
3214 	del_timer_sync(&ic->autocommit_timer);  in dm_integrity_postsuspend()
3216 	if (ic->recalc_wq)  in dm_integrity_postsuspend()
3217 		drain_workqueue(ic->recalc_wq);  in dm_integrity_postsuspend()
3219 	if (ic->mode == 'B')  in dm_integrity_postsuspend()
3220 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_postsuspend()
3222 	queue_work(ic->commit_wq, &ic->commit_work);  in dm_integrity_postsuspend()
3223 	drain_workqueue(ic->commit_wq);  in dm_integrity_postsuspend()
3225 	if (ic->mode == 'J') {  in dm_integrity_postsuspend()
3226 		queue_work(ic->writer_wq, &ic->writer_work);  in dm_integrity_postsuspend()
3227 		drain_workqueue(ic->writer_wq);  in dm_integrity_postsuspend()
3228 		dm_integrity_flush_buffers(ic, true);  in dm_integrity_postsuspend()
3229 		if (ic->wrote_to_journal) {  in dm_integrity_postsuspend()
3230 			init_journal(ic, ic->free_section,  in dm_integrity_postsuspend()
3231 				     ic->journal_sections - ic->free_section, ic->commit_seq);  in dm_integrity_postsuspend()
3232 			if (ic->free_section) {  in dm_integrity_postsuspend()
3233 				init_journal(ic, 0, ic->free_section,  in dm_integrity_postsuspend()
3234 					     next_commit_seq(ic->commit_seq));  in dm_integrity_postsuspend()
3239 	if (ic->mode == 'B') {  in dm_integrity_postsuspend()
3240 		dm_integrity_flush_buffers(ic, true);  in dm_integrity_postsuspend()
3243 		init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_postsuspend()
3244 		ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_postsuspend()
3245 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_postsuspend()
3247 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_postsuspend()
3251 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));  in dm_integrity_postsuspend()
3253 	ic->journal_uptodate = true;  in dm_integrity_postsuspend()
3258 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_resume()  local
3259 	__u64 old_provided_data_sectors = le64_to_cpu(ic->sb->provided_data_sectors);  in dm_integrity_resume()
3264 	ic->wrote_to_journal = false;  in dm_integrity_resume()
3266 	if (ic->provided_data_sectors != old_provided_data_sectors) {  in dm_integrity_resume()
3267 		if (ic->provided_data_sectors > old_provided_data_sectors &&  in dm_integrity_resume()
3268 		    ic->mode == 'B' &&  in dm_integrity_resume()
3269 		    ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit) {  in dm_integrity_resume()
3270 			rw_journal_sectors(ic, REQ_OP_READ, 0,  in dm_integrity_resume()
3271 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3272 			block_bitmap_op(ic, ic->journal, old_provided_data_sectors,  in dm_integrity_resume()
3273 					ic->provided_data_sectors - old_provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3274 			rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3275 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3278 		ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);  in dm_integrity_resume()
3279 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3281 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3284 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP)) {  in dm_integrity_resume()
3286 		rw_journal_sectors(ic, REQ_OP_READ, 0,  in dm_integrity_resume()
3287 				   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3288 		if (ic->mode == 'B') {  in dm_integrity_resume()
3289 			if (ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit &&  in dm_integrity_resume()
3290 			    !ic->reset_recalculate_flag) {  in dm_integrity_resume()
3291 				block_bitmap_copy(ic, ic->recalc_bitmap, ic->journal);  in dm_integrity_resume()
3292 				block_bitmap_copy(ic, ic->may_write_bitmap, ic->journal);  in dm_integrity_resume()
3293 				if (!block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors,  in dm_integrity_resume()
3295 					ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3296 					ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3300 					    ic->sb->log2_blocks_per_bitmap_bit, ic->log2_blocks_per_bitmap_bit);  in dm_integrity_resume()
3301 				ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;  in dm_integrity_resume()
3302 				block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3303 				block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3304 				block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3305 				rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3306 						   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  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()
3311 			if (!(ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit &&  in dm_integrity_resume()
3312 …	      block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_TEST_ALL_CLEAR)) ||  in dm_integrity_resume()
3313 			    ic->reset_recalculate_flag) {  in dm_integrity_resume()
3314 				ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3315 				ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3317 			init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_resume()
3318 			replay_journal(ic);  in dm_integrity_resume()
3319 			ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_resume()
3321 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3323 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3325 		replay_journal(ic);  in dm_integrity_resume()
3326 		if (ic->reset_recalculate_flag) {  in dm_integrity_resume()
3327 			ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3328 			ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3330 		if (ic->mode == 'B') {  in dm_integrity_resume()
3331 			ic->sb->flags |= cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_resume()
3332 			ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;  in dm_integrity_resume()
3333 			r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3335 				dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3337 			block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3338 			block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3339 			block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3340 			if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_resume()
3341 			    le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors) {  in dm_integrity_resume()
3342 				block_bitmap_op(ic, ic->journal, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3343 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3344 				block_bitmap_op(ic, ic->recalc_bitmap, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3345 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3346 				block_bitmap_op(ic, ic->may_write_bitmap, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3347 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3349 			rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3350 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3354 	DEBUG_print("testing recalc: %x\n", ic->sb->flags);  in dm_integrity_resume()
3355 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in dm_integrity_resume()
3356 		__u64 recalc_pos = le64_to_cpu(ic->sb->recalc_sector);  in dm_integrity_resume()
3358 		DEBUG_print("recalc pos: %llx / %llx\n", recalc_pos, ic->provided_data_sectors);  in dm_integrity_resume()
3359 		if (recalc_pos < ic->provided_data_sectors) {  in dm_integrity_resume()
3360 			queue_work(ic->recalc_wq, &ic->recalc_work);  in dm_integrity_resume()
3361 		} else if (recalc_pos > ic->provided_data_sectors) {  in dm_integrity_resume()
3362 			ic->sb->recalc_sector = cpu_to_le64(ic->provided_data_sectors);  in dm_integrity_resume()
3363 			recalc_write_super(ic);  in dm_integrity_resume()
3367 	ic->reboot_notifier.notifier_call = dm_integrity_reboot;  in dm_integrity_resume()
3368 	ic->reboot_notifier.next = NULL;  in dm_integrity_resume()
3369 	ic->reboot_notifier.priority = INT_MAX - 1;	/* be notified after md and before hardware drivers */  in dm_integrity_resume()
3370 	WARN_ON(register_reboot_notifier(&ic->reboot_notifier));  in dm_integrity_resume()
3374 	dm_integrity_enter_synchronous_mode(ic);  in dm_integrity_resume()
3381 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_status()  local
3388 			(unsigned long long)atomic64_read(&ic->number_of_mismatches),  in dm_integrity_status()
3389 			ic->provided_data_sectors);  in dm_integrity_status()
3390 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in dm_integrity_status()
3391 			DMEMIT(" %llu", le64_to_cpu(ic->sb->recalc_sector));  in dm_integrity_status()
3397 		__u64 watermark_percentage = (__u64)(ic->journal_entries - ic->free_sectors_threshold) * 100;  in dm_integrity_status()
3399 		watermark_percentage += ic->journal_entries / 2;  in dm_integrity_status()
3400 		do_div(watermark_percentage, ic->journal_entries);  in dm_integrity_status()
3402 		arg_count += !!ic->meta_dev;  in dm_integrity_status()
3403 		arg_count += ic->sectors_per_block != 1;  in dm_integrity_status()
3404 		arg_count += !!(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING));  in dm_integrity_status()
3405 		arg_count += ic->reset_recalculate_flag;  in dm_integrity_status()
3406 		arg_count += ic->discard;  in dm_integrity_status()
3407 		arg_count += ic->mode == 'J';  in dm_integrity_status()
3408 		arg_count += ic->mode == 'J';  in dm_integrity_status()
3409 		arg_count += ic->mode == 'B';  in dm_integrity_status()
3410 		arg_count += ic->mode == 'B';  in dm_integrity_status()
3411 		arg_count += !!ic->internal_hash_alg.alg_string;  in dm_integrity_status()
3412 		arg_count += !!ic->journal_crypt_alg.alg_string;  in dm_integrity_status()
3413 		arg_count += !!ic->journal_mac_alg.alg_string;  in dm_integrity_status()
3414 		arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0;  in dm_integrity_status()
3415 		arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0;  in dm_integrity_status()
3416 		arg_count += ic->legacy_recalculate;  in dm_integrity_status()
3417 		DMEMIT("%s %llu %u %c %u", ic->dev->name, ic->start,  in dm_integrity_status()
3418 		       ic->tag_size, ic->mode, arg_count);  in dm_integrity_status()
3419 		if (ic->meta_dev)  in dm_integrity_status()
3420 			DMEMIT(" meta_device:%s", ic->meta_dev->name);  in dm_integrity_status()
3421 		if (ic->sectors_per_block != 1)  in dm_integrity_status()
3422 			DMEMIT(" block_size:%u", ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_status()
3423 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in dm_integrity_status()
3425 		if (ic->reset_recalculate_flag)  in dm_integrity_status()
3427 		if (ic->discard)  in dm_integrity_status()
3429 		DMEMIT(" journal_sectors:%u", ic->initial_sectors - SB_SECTORS);  in dm_integrity_status()
3430 		DMEMIT(" interleave_sectors:%u", 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_status()
3431 		DMEMIT(" buffer_sectors:%u", 1U << ic->log2_buffer_sectors);  in dm_integrity_status()
3432 		if (ic->mode == 'J') {  in dm_integrity_status()
3434 			DMEMIT(" commit_time:%u", ic->autocommit_msec);  in dm_integrity_status()
3436 		if (ic->mode == 'B') {  in dm_integrity_status()
3437 …DMEMIT(" sectors_per_bit:%llu", (sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit);  in dm_integrity_status()
3438 			DMEMIT(" bitmap_flush_interval:%u", jiffies_to_msecs(ic->bitmap_flush_interval));  in dm_integrity_status()
3440 		if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0)  in dm_integrity_status()
3442 		if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0)  in dm_integrity_status()
3444 		if (ic->legacy_recalculate)  in dm_integrity_status()
3449 			if (ic->a.alg_string) {				\  in dm_integrity_status()
3450 				DMEMIT(" %s:%s", n, ic->a.alg_string);	\  in dm_integrity_status()
3451 				if (ic->a.key_string)			\  in dm_integrity_status()
3452 					DMEMIT(":%s", ic->a.key_string);\  in dm_integrity_status()
3463 			ic->dev->name, ic->start, ic->tag_size, ic->mode);  in dm_integrity_status()
3465 		if (ic->meta_dev)  in dm_integrity_status()
3466 			DMEMIT(",meta_device=%s", ic->meta_dev->name);  in dm_integrity_status()
3467 		if (ic->sectors_per_block != 1)  in dm_integrity_status()
3468 			DMEMIT(",block_size=%u", ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_status()
3470 		DMEMIT(",recalculate=%c", (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) ?  in dm_integrity_status()
3472 		DMEMIT(",allow_discards=%c", ic->discard ? 'y' : 'n');  in dm_integrity_status()
3474 		       ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0) ? 'y' : 'n');  in dm_integrity_status()
3476 		       ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0) ? 'y' : 'n');  in dm_integrity_status()
3477 		DMEMIT(",legacy_recalculate=%c", ic->legacy_recalculate ? 'y' : 'n');  in dm_integrity_status()
3479 		DMEMIT(",journal_sectors=%u", ic->initial_sectors - SB_SECTORS);  in dm_integrity_status()
3480 		DMEMIT(",interleave_sectors=%u", 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_status()
3481 		DMEMIT(",buffer_sectors=%u", 1U << ic->log2_buffer_sectors);  in dm_integrity_status()
3490 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_iterate_devices()  local
3492 	if (!ic->meta_dev)  in dm_integrity_iterate_devices()
3493 		return fn(ti, ic->dev, ic->start + ic->initial_sectors + ic->metadata_run, ti->len, data);  in dm_integrity_iterate_devices()
3495 		return fn(ti, ic->dev, 0, ti->len, data);  in dm_integrity_iterate_devices()
3500 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_io_hints()  local
3502 	if (ic->sectors_per_block > 1) {  in dm_integrity_io_hints()
3503 		limits->logical_block_size = ic->sectors_per_block << SECTOR_SHIFT;  in dm_integrity_io_hints()
3504 		limits->physical_block_size = ic->sectors_per_block << SECTOR_SHIFT;  in dm_integrity_io_hints()
3505 		blk_limits_io_min(limits, ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_io_hints()
3510 static void calculate_journal_section_size(struct dm_integrity_c *ic)  in calculate_journal_section_size()  argument
3514 	ic->journal_sections = le32_to_cpu(ic->sb->journal_sections);  in calculate_journal_section_size()
3515 …ic->journal_entry_size = roundup(offsetof(struct journal_entry, last_bytes[ic->sectors_per_block])…  in calculate_journal_section_size()
3518 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC))  in calculate_journal_section_size()
3520 	ic->journal_entries_per_sector = sector_space / ic->journal_entry_size;  in calculate_journal_section_size()
3521 	ic->journal_section_entries = ic->journal_entries_per_sector * JOURNAL_BLOCK_SECTORS;  in calculate_journal_section_size()
3522 …ic->journal_section_sectors = (ic->journal_section_entries << ic->sb->log2_sectors_per_block) + JO…  in calculate_journal_section_size()
3523 	ic->journal_entries = ic->journal_section_entries * ic->journal_sections;  in calculate_journal_section_size()
3526 static int calculate_device_limits(struct dm_integrity_c *ic)  in calculate_device_limits()  argument
3530 	calculate_journal_section_size(ic);  in calculate_device_limits()
3531 	initial_sectors = SB_SECTORS + (__u64)ic->journal_section_sectors * ic->journal_sections;  in calculate_device_limits()
3532 …if (initial_sectors + METADATA_PADDING_SECTORS >= ic->meta_device_sectors || initial_sectors > UIN…  in calculate_device_limits()
3534 	ic->initial_sectors = initial_sectors;  in calculate_device_limits()
3536 	if (!ic->meta_dev) {  in calculate_device_limits()
3541 			ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING) ?  in calculate_device_limits()
3545 …ic->metadata_run = round_up((__u64)ic->tag_size << (ic->sb->log2_interleave_sectors - ic->sb->log2…  in calculate_device_limits()
3547 		if (!(ic->metadata_run & (ic->metadata_run - 1)))  in calculate_device_limits()
3548 			ic->log2_metadata_run = __ffs(ic->metadata_run);  in calculate_device_limits()
3550 			ic->log2_metadata_run = -1;  in calculate_device_limits()
3552 		get_area_and_offset(ic, ic->provided_data_sectors - 1, &last_area, &last_offset);  in calculate_device_limits()
3553 		last_sector = get_data_sector(ic, last_area, last_offset);  in calculate_device_limits()
3554 		if (last_sector < ic->start || last_sector >= ic->meta_device_sectors)  in calculate_device_limits()
3557 		__u64 meta_size = (ic->provided_data_sectors >> ic->sb->log2_sectors_per_block) * ic->tag_size;  in calculate_device_limits()
3559 		meta_size = (meta_size + ((1U << (ic->log2_buffer_sectors + SECTOR_SHIFT)) - 1))  in calculate_device_limits()
3560 				>> (ic->log2_buffer_sectors + SECTOR_SHIFT);  in calculate_device_limits()
3561 		meta_size <<= ic->log2_buffer_sectors;  in calculate_device_limits()
3562 		if (ic->initial_sectors + meta_size < ic->initial_sectors ||  in calculate_device_limits()
3563 		    ic->initial_sectors + meta_size > ic->meta_device_sectors)  in calculate_device_limits()
3565 		ic->metadata_run = 1;  in calculate_device_limits()
3566 		ic->log2_metadata_run = 0;  in calculate_device_limits()
3572 static void get_provided_data_sectors(struct dm_integrity_c *ic)  in get_provided_data_sectors()  argument
3574 	if (!ic->meta_dev) {  in get_provided_data_sectors()
3577 		ic->provided_data_sectors = 0;  in get_provided_data_sectors()
3578 		for (test_bit = fls64(ic->meta_device_sectors) - 1; test_bit >= 3; test_bit--) {  in get_provided_data_sectors()
3579 			__u64 prev_data_sectors = ic->provided_data_sectors;  in get_provided_data_sectors()
3581 			ic->provided_data_sectors |= (sector_t)1 << test_bit;  in get_provided_data_sectors()
3582 			if (calculate_device_limits(ic))  in get_provided_data_sectors()
3583 				ic->provided_data_sectors = prev_data_sectors;  in get_provided_data_sectors()
3586 		ic->provided_data_sectors = ic->data_device_sectors;  in get_provided_data_sectors()
3587 		ic->provided_data_sectors &= ~(sector_t)(ic->sectors_per_block - 1);  in get_provided_data_sectors()
3591 static int initialize_superblock(struct dm_integrity_c *ic,  in initialize_superblock()  argument
3597 	memset(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT);  in initialize_superblock()
3598 	memcpy(ic->sb->magic, SB_MAGIC, 8);  in initialize_superblock()
3599 	ic->sb->integrity_tag_size = cpu_to_le16(ic->tag_size);  in initialize_superblock()
3600 	ic->sb->log2_sectors_per_block = __ffs(ic->sectors_per_block);  in initialize_superblock()
3601 	if (ic->journal_mac_alg.alg_string)  in initialize_superblock()
3602 		ic->sb->flags |= cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC);  in initialize_superblock()
3604 	calculate_journal_section_size(ic);  in initialize_superblock()
3605 	journal_sections = journal_sectors / ic->journal_section_sectors;  in initialize_superblock()
3609 	if (ic->fix_hmac && (ic->internal_hash_alg.alg_string || ic->journal_mac_alg.alg_string)) {  in initialize_superblock()
3610 		ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_HMAC);  in initialize_superblock()
3611 		get_random_bytes(ic->sb->salt, SALT_SIZE);  in initialize_superblock()
3614 	if (!ic->meta_dev) {  in initialize_superblock()
3615 		if (ic->fix_padding)  in initialize_superblock()
3616 			ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_PADDING);  in initialize_superblock()
3617 		ic->sb->journal_sections = cpu_to_le32(journal_sections);  in initialize_superblock()
3620 		ic->sb->log2_interleave_sectors = __fls(interleave_sectors);  in initialize_superblock()
3621 …ic->sb->log2_interleave_sectors = max_t(__u8, MIN_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave…  in initialize_superblock()
3622 …ic->sb->log2_interleave_sectors = min_t(__u8, MAX_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave…  in initialize_superblock()
3624 		get_provided_data_sectors(ic);  in initialize_superblock()
3625 		if (!ic->provided_data_sectors)  in initialize_superblock()
3628 		ic->sb->log2_interleave_sectors = 0;  in initialize_superblock()
3630 		get_provided_data_sectors(ic);  in initialize_superblock()
3631 		if (!ic->provided_data_sectors)  in initialize_superblock()
3635 		ic->sb->journal_sections = cpu_to_le32(0);  in initialize_superblock()
3637 			__u32 prev_journal_sections = le32_to_cpu(ic->sb->journal_sections);  in initialize_superblock()
3642 			ic->sb->journal_sections = cpu_to_le32(test_journal_sections);  in initialize_superblock()
3643 			if (calculate_device_limits(ic))  in initialize_superblock()
3644 				ic->sb->journal_sections = cpu_to_le32(prev_journal_sections);  in initialize_superblock()
3647 		if (!le32_to_cpu(ic->sb->journal_sections)) {  in initialize_superblock()
3648 			if (ic->log2_buffer_sectors > 3) {  in initialize_superblock()
3649 				ic->log2_buffer_sectors--;  in initialize_superblock()
3656 	ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);  in initialize_superblock()
3658 	sb_set_version(ic);  in initialize_superblock()
3663 static void dm_integrity_set(struct dm_target *ti, struct dm_integrity_c *ic)  in dm_integrity_set()  argument
3670 	bi.tuple_size = ic->tag_size;  in dm_integrity_set()
3672 	bi.interval_exp = ic->sb->log2_sectors_per_block + SECTOR_SHIFT;  in dm_integrity_set()
3713 static void dm_integrity_free_journal_scatterlist(struct dm_integrity_c *ic, struct scatterlist **s…  in dm_integrity_free_journal_scatterlist()  argument
3717 	for (i = 0; i < ic->journal_sections; i++)  in dm_integrity_free_journal_scatterlist()
3722 static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_integrity_c *ic,  in dm_integrity_alloc_journal_scatterlist()  argument
3728 	sl = kvmalloc_array(ic->journal_sections,  in dm_integrity_alloc_journal_scatterlist()
3734 	for (i = 0; i < ic->journal_sections; i++) {  in dm_integrity_alloc_journal_scatterlist()
3741 		page_list_location(ic, i, 0, &start_index, &start_offset);  in dm_integrity_alloc_journal_scatterlist()
3742 		page_list_location(ic, i, ic->journal_section_sectors - 1,  in dm_integrity_alloc_journal_scatterlist()
3750 			dm_integrity_free_journal_scatterlist(ic, sl);  in dm_integrity_alloc_journal_scatterlist()
3842 static int create_journal(struct dm_integrity_c *ic, char **error)  in create_journal()  argument
3850 	ic->commit_ids[0] = cpu_to_le64(0x1111111111111111ULL);  in create_journal()
3851 	ic->commit_ids[1] = cpu_to_le64(0x2222222222222222ULL);  in create_journal()
3852 	ic->commit_ids[2] = cpu_to_le64(0x3333333333333333ULL);  in create_journal()
3853 	ic->commit_ids[3] = cpu_to_le64(0x4444444444444444ULL);  in create_journal()
3855 	journal_pages = roundup((__u64)ic->journal_sections * ic->journal_section_sectors,  in create_journal()
3863 	ic->journal_pages = journal_pages;  in create_journal()
3865 	ic->journal = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3866 	if (!ic->journal) {  in create_journal()
3871 	if (ic->journal_crypt_alg.alg_string) {  in create_journal()
3875 		comp.ic = ic;  in create_journal()
3876 …ic->journal_crypt = crypto_alloc_skcipher(ic->journal_crypt_alg.alg_string, 0, CRYPTO_ALG_ALLOCATE…  in create_journal()
3877 		if (IS_ERR(ic->journal_crypt)) {  in create_journal()
3879 			r = PTR_ERR(ic->journal_crypt);  in create_journal()
3880 			ic->journal_crypt = NULL;  in create_journal()
3883 		ivsize = crypto_skcipher_ivsize(ic->journal_crypt);  in create_journal()
3884 		blocksize = crypto_skcipher_blocksize(ic->journal_crypt);  in create_journal()
3886 		if (ic->journal_crypt_alg.key) {  in create_journal()
3887 			r = crypto_skcipher_setkey(ic->journal_crypt, ic->journal_crypt_alg.key,  in create_journal()
3888 						   ic->journal_crypt_alg.key_size);  in create_journal()
3895 			    ic->journal_crypt_alg.alg_string, blocksize, ivsize);  in create_journal()
3897 		ic->journal_io = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3898 		if (!ic->journal_io) {  in create_journal()
3907 			req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3921 			ic->journal_xor = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3922 			if (!ic->journal_xor) {  in create_journal()
3928 			sg = kvmalloc_array(ic->journal_pages + 1,  in create_journal()
3936 			sg_init_table(sg, ic->journal_pages + 1);  in create_journal()
3937 			for (i = 0; i < ic->journal_pages; i++) {  in create_journal()
3938 				char *va = lowmem_page_address(ic->journal_xor[i].page);  in create_journal()
3943 			sg_set_buf(&sg[i], &ic->commit_ids, sizeof(ic->commit_ids));  in create_journal()
3946 						   PAGE_SIZE * ic->journal_pages + sizeof(ic->commit_ids), crypt_iv);  in create_journal()
3952 			r = dm_integrity_failed(ic);  in create_journal()
3957 			DEBUG_bytes(lowmem_page_address(ic->journal_xor[0].page), 64, "xor data");  in create_journal()
3959 			crypto_free_skcipher(ic->journal_crypt);  in create_journal()
3960 			ic->journal_crypt = NULL;  in create_journal()
3964 			req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3985 			ic->journal_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal);  in create_journal()
3986 			if (!ic->journal_scatterlist) {  in create_journal()
3991 			ic->journal_io_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal_io);  in create_journal()
3992 			if (!ic->journal_io_scatterlist) {  in create_journal()
3997 			ic->sk_requests = kvmalloc_array(ic->journal_sections,  in create_journal()
4000 			if (!ic->sk_requests) {  in create_journal()
4005 			for (i = 0; i < ic->journal_sections; i++) {  in create_journal()
4021 				r = dm_integrity_failed(ic);  in create_journal()
4027 				section_req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
4042 				section_req->cryptlen = (size_t)ic->journal_section_sectors << SECTOR_SHIFT;  in create_journal()
4043 				ic->sk_requests[i] = section_req;  in create_journal()
4054 			if (ic->commit_ids[j] == ic->commit_ids[i]) {  in create_journal()
4055 				ic->commit_ids[i] = cpu_to_le64(le64_to_cpu(ic->commit_ids[i]) + 1);  in create_journal()
4059 		DEBUG_print("commit id %u: %016llx\n", i, ic->commit_ids[i]);  in create_journal()
4062 	journal_tree_size = (__u64)ic->journal_entries * sizeof(struct journal_node);  in create_journal()
4068 	ic->journal_tree = kvmalloc(journal_tree_size, GFP_KERNEL);  in create_journal()
4069 	if (!ic->journal_tree) {  in create_journal()
4107 	struct dm_integrity_c *ic;  in dm_integrity_ctr()  local
4131 	ic = kzalloc(sizeof(struct dm_integrity_c), GFP_KERNEL);  in dm_integrity_ctr()
4132 	if (!ic) {  in dm_integrity_ctr()
4136 	ti->private = ic;  in dm_integrity_ctr()
4138 	ic->ti = ti;  in dm_integrity_ctr()
4140 	ic->in_progress = RB_ROOT;  in dm_integrity_ctr()
4141 	INIT_LIST_HEAD(&ic->wait_list);  in dm_integrity_ctr()
4142 	init_waitqueue_head(&ic->endio_wait);  in dm_integrity_ctr()
4143 	bio_list_init(&ic->flush_bio_list);  in dm_integrity_ctr()
4144 	init_waitqueue_head(&ic->copy_to_journal_wait);  in dm_integrity_ctr()
4145 	init_completion(&ic->crypto_backoff);  in dm_integrity_ctr()
4146 	atomic64_set(&ic->number_of_mismatches, 0);  in dm_integrity_ctr()
4147 	ic->bitmap_flush_interval = BITMAP_FLUSH_INTERVAL;  in dm_integrity_ctr()
4149 	r = dm_get_device(ti, argv[0], dm_table_get_mode(ti->table), &ic->dev);  in dm_integrity_ctr()
4160 	ic->start = start;  in dm_integrity_ctr()
4163 		if (sscanf(argv[2], "%u%c", &ic->tag_size, &dummy) != 1 || !ic->tag_size) {  in dm_integrity_ctr()
4172 		ic->mode = argv[3][0];  in dm_integrity_ctr()
4184 	ic->sectors_per_block = 1;  in dm_integrity_ctr()
4214 			if (ic->meta_dev) {  in dm_integrity_ctr()
4215 				dm_put_device(ti, ic->meta_dev);  in dm_integrity_ctr()
4216 				ic->meta_dev = NULL;  in dm_integrity_ctr()
4219 					  dm_table_get_mode(ti->table), &ic->meta_dev);  in dm_integrity_ctr()
4232 			ic->sectors_per_block = val >> SECTOR_SHIFT;  in dm_integrity_ctr()
4241 			ic->bitmap_flush_interval = msecs_to_jiffies(val);  in dm_integrity_ctr()
4243 			r = get_alg_and_key(opt_string, &ic->internal_hash_alg, &ti->error,  in dm_integrity_ctr()
4248 			r = get_alg_and_key(opt_string, &ic->journal_crypt_alg, &ti->error,  in dm_integrity_ctr()
4253 			r = get_alg_and_key(opt_string, &ic->journal_mac_alg, &ti->error,  in dm_integrity_ctr()
4258 			ic->recalculate_flag = true;  in dm_integrity_ctr()
4260 			ic->recalculate_flag = true;  in dm_integrity_ctr()
4261 			ic->reset_recalculate_flag = true;  in dm_integrity_ctr()
4263 			ic->discard = true;  in dm_integrity_ctr()
4265 			ic->fix_padding = true;  in dm_integrity_ctr()
4267 			ic->fix_hmac = true;  in dm_integrity_ctr()
4269 			ic->legacy_recalculate = true;  in dm_integrity_ctr()
4277 	ic->data_device_sectors = bdev_nr_sectors(ic->dev->bdev);  in dm_integrity_ctr()
4278 	if (!ic->meta_dev)  in dm_integrity_ctr()
4279 		ic->meta_device_sectors = ic->data_device_sectors;  in dm_integrity_ctr()
4281 		ic->meta_device_sectors = bdev_nr_sectors(ic->meta_dev->bdev);  in dm_integrity_ctr()
4285 				      ic->data_device_sectors >> DEFAULT_JOURNAL_SIZE_FACTOR);  in dm_integrity_ctr()
4290 	ic->log2_buffer_sectors = min((int)__fls(buffer_sectors), 31 - SECTOR_SHIFT);  in dm_integrity_ctr()
4292 	r = get_mac(&ic->internal_hash, &ic->internal_hash_alg, &ti->error,  in dm_integrity_ctr()
4297 	r = get_mac(&ic->journal_mac, &ic->journal_mac_alg, &ti->error,  in dm_integrity_ctr()
4302 	if (!ic->tag_size) {  in dm_integrity_ctr()
4303 		if (!ic->internal_hash) {  in dm_integrity_ctr()
4308 		ic->tag_size = crypto_shash_digestsize(ic->internal_hash);  in dm_integrity_ctr()
4310 	if (ic->tag_size > MAX_TAG_SIZE) {  in dm_integrity_ctr()
4315 	if (!(ic->tag_size & (ic->tag_size - 1)))  in dm_integrity_ctr()
4316 		ic->log2_tag_size = __ffs(ic->tag_size);  in dm_integrity_ctr()
4318 		ic->log2_tag_size = -1;  in dm_integrity_ctr()
4320 	if (ic->mode == 'B' && !ic->internal_hash) {  in dm_integrity_ctr()
4326 	if (ic->discard && !ic->internal_hash) {  in dm_integrity_ctr()
4332 	ic->autocommit_jiffies = msecs_to_jiffies(sync_msec);  in dm_integrity_ctr()
4333 	ic->autocommit_msec = sync_msec;  in dm_integrity_ctr()
4334 	timer_setup(&ic->autocommit_timer, autocommit_fn, 0);  in dm_integrity_ctr()
4336 	ic->io = dm_io_client_create();  in dm_integrity_ctr()
4337 	if (IS_ERR(ic->io)) {  in dm_integrity_ctr()
4338 		r = PTR_ERR(ic->io);  in dm_integrity_ctr()
4339 		ic->io = NULL;  in dm_integrity_ctr()
4344 	r = mempool_init_slab_pool(&ic->journal_io_mempool, JOURNAL_IO_MEMPOOL, journal_io_cache);  in dm_integrity_ctr()
4350 	r = mempool_init_page_pool(&ic->recheck_pool, 1, 0);  in dm_integrity_ctr()
4356 	ic->metadata_wq = alloc_workqueue("dm-integrity-metadata",  in dm_integrity_ctr()
4358 	if (!ic->metadata_wq) {  in dm_integrity_ctr()
4368 	ic->wait_wq = alloc_ordered_workqueue("dm-integrity-wait", WQ_MEM_RECLAIM);  in dm_integrity_ctr()
4369 	if (!ic->wait_wq) {  in dm_integrity_ctr()
4375 	ic->offload_wq = alloc_workqueue("dm-integrity-offload", WQ_MEM_RECLAIM,  in dm_integrity_ctr()
4377 	if (!ic->offload_wq) {  in dm_integrity_ctr()
4383 	ic->commit_wq = alloc_workqueue("dm-integrity-commit", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4384 	if (!ic->commit_wq) {  in dm_integrity_ctr()
4389 	INIT_WORK(&ic->commit_work, integrity_commit);  in dm_integrity_ctr()
4391 	if (ic->mode == 'J' || ic->mode == 'B') {  in dm_integrity_ctr()
4392 		ic->writer_wq = alloc_workqueue("dm-integrity-writer", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4393 		if (!ic->writer_wq) {  in dm_integrity_ctr()
4398 		INIT_WORK(&ic->writer_work, integrity_writer);  in dm_integrity_ctr()
4401 	ic->sb = alloc_pages_exact(SB_SECTORS << SECTOR_SHIFT, GFP_KERNEL);  in dm_integrity_ctr()
4402 	if (!ic->sb) {  in dm_integrity_ctr()
4408 	r = sync_rw_sb(ic, REQ_OP_READ);  in dm_integrity_ctr()
4414 	if (memcmp(ic->sb->magic, SB_MAGIC, 8)) {  in dm_integrity_ctr()
4415 		if (ic->mode != 'R') {  in dm_integrity_ctr()
4416 			if (memchr_inv(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT)) {  in dm_integrity_ctr()
4423 		r = initialize_superblock(ic, journal_sectors, interleave_sectors);  in dm_integrity_ctr()
4428 		if (ic->mode != 'R')  in dm_integrity_ctr()
4432 	if (!ic->sb->version || ic->sb->version > SB_VERSION_5) {  in dm_integrity_ctr()
4437 	if (le16_to_cpu(ic->sb->integrity_tag_size) != ic->tag_size) {  in dm_integrity_ctr()
4442 	if (ic->sb->log2_sectors_per_block != __ffs(ic->sectors_per_block)) {  in dm_integrity_ctr()
4447 	if (!le32_to_cpu(ic->sb->journal_sections)) {  in dm_integrity_ctr()
4453 	if (!ic->meta_dev) {  in dm_integrity_ctr()
4454 		if (ic->sb->log2_interleave_sectors < MIN_LOG2_INTERLEAVE_SECTORS ||  in dm_integrity_ctr()
4455 		    ic->sb->log2_interleave_sectors > MAX_LOG2_INTERLEAVE_SECTORS) {  in dm_integrity_ctr()
4461 		if (ic->sb->log2_interleave_sectors) {  in dm_integrity_ctr()
4467 …if (!!(ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC)) != !!ic->journal_mac_alg.alg_string)…  in dm_integrity_ctr()
4473 	get_provided_data_sectors(ic);  in dm_integrity_ctr()
4474 	if (!ic->provided_data_sectors) {  in dm_integrity_ctr()
4481 	r = calculate_device_limits(ic);  in dm_integrity_ctr()
4483 		if (ic->meta_dev) {  in dm_integrity_ctr()
4484 			if (ic->log2_buffer_sectors > 3) {  in dm_integrity_ctr()
4485 				ic->log2_buffer_sectors--;  in dm_integrity_ctr()
4495 	if (log2_sectors_per_bitmap_bit < ic->sb->log2_sectors_per_block)  in dm_integrity_ctr()
4496 		log2_sectors_per_bitmap_bit = ic->sb->log2_sectors_per_block;  in dm_integrity_ctr()
4498 …bits_in_journal = ((__u64)ic->journal_section_sectors * ic->journal_sections) << (SECTOR_SHIFT + 3…  in dm_integrity_ctr()
4501 …while (bits_in_journal < (ic->provided_data_sectors + ((sector_t)1 << log2_sectors_per_bitmap_bit)…  in dm_integrity_ctr()
4504 	log2_blocks_per_bitmap_bit = log2_sectors_per_bitmap_bit - ic->sb->log2_sectors_per_block;  in dm_integrity_ctr()
4505 	ic->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit;  in dm_integrity_ctr()
4507 		ic->sb->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit;  in dm_integrity_ctr()
4509 	n_bitmap_bits = ((ic->provided_data_sectors >> ic->sb->log2_sectors_per_block)  in dm_integrity_ctr()
4511 	ic->n_bitmap_blocks = DIV_ROUND_UP(n_bitmap_bits, BITMAP_BLOCK_SIZE * 8);  in dm_integrity_ctr()
4513 	if (!ic->meta_dev)  in dm_integrity_ctr()
4514 		ic->log2_buffer_sectors = min(ic->log2_buffer_sectors, (__u8)__ffs(ic->metadata_run));  in dm_integrity_ctr()
4516 	if (ti->len > ic->provided_data_sectors) {  in dm_integrity_ctr()
4523 	threshold = (__u64)ic->journal_entries * (100 - journal_watermark);  in dm_integrity_ctr()
4526 	ic->free_sectors_threshold = threshold;  in dm_integrity_ctr()
4529 	DEBUG_print("	integrity_tag_size %u\n", le16_to_cpu(ic->sb->integrity_tag_size));  in dm_integrity_ctr()
4530 	DEBUG_print("	journal_entry_size %u\n", ic->journal_entry_size);  in dm_integrity_ctr()
4531 	DEBUG_print("	journal_entries_per_sector %u\n", ic->journal_entries_per_sector);  in dm_integrity_ctr()
4532 	DEBUG_print("	journal_section_entries %u\n", ic->journal_section_entries);  in dm_integrity_ctr()
4533 	DEBUG_print("	journal_section_sectors %u\n", ic->journal_section_sectors);  in dm_integrity_ctr()
4534 	DEBUG_print("	journal_sections %u\n", (unsigned int)le32_to_cpu(ic->sb->journal_sections));  in dm_integrity_ctr()
4535 	DEBUG_print("	journal_entries %u\n", ic->journal_entries);  in dm_integrity_ctr()
4536 	DEBUG_print("	log2_interleave_sectors %d\n", ic->sb->log2_interleave_sectors);  in dm_integrity_ctr()
4537 	DEBUG_print("	data_device_sectors 0x%llx\n", bdev_nr_sectors(ic->dev->bdev));  in dm_integrity_ctr()
4538 	DEBUG_print("	initial_sectors 0x%x\n", ic->initial_sectors);  in dm_integrity_ctr()
4539 	DEBUG_print("	metadata_run 0x%x\n", ic->metadata_run);  in dm_integrity_ctr()
4540 	DEBUG_print("	log2_metadata_run %d\n", ic->log2_metadata_run);  in dm_integrity_ctr()
4541 …DEBUG_print("	provided_data_sectors 0x%llx (%llu)\n", ic->provided_data_sectors, ic->provided_data…  in dm_integrity_ctr()
4542 	DEBUG_print("	log2_buffer_sectors %u\n", ic->log2_buffer_sectors);  in dm_integrity_ctr()
4545 	if (ic->recalculate_flag && !(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))) {  in dm_integrity_ctr()
4546 		ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_ctr()
4547 		ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_ctr()
4550 	if (ic->internal_hash) {  in dm_integrity_ctr()
4551 		ic->recalc_wq = alloc_workqueue("dm-integrity-recalc", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4552 		if (!ic->recalc_wq) {  in dm_integrity_ctr()
4557 		INIT_WORK(&ic->recalc_work, integrity_recalc);  in dm_integrity_ctr()
4559 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in dm_integrity_ctr()
4566 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_ctr()
4567 	    le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors &&  in dm_integrity_ctr()
4568 	    dm_integrity_disable_recalculate(ic)) {  in dm_integrity_ctr()
4574 	ic->bufio = dm_bufio_client_create(ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev,  in dm_integrity_ctr()
4575 			1U << (SECTOR_SHIFT + ic->log2_buffer_sectors), 1, 0, NULL, NULL, 0);  in dm_integrity_ctr()
4576 	if (IS_ERR(ic->bufio)) {  in dm_integrity_ctr()
4577 		r = PTR_ERR(ic->bufio);  in dm_integrity_ctr()
4579 		ic->bufio = NULL;  in dm_integrity_ctr()
4582 	dm_bufio_set_sector_offset(ic->bufio, ic->start + ic->initial_sectors);  in dm_integrity_ctr()
4584 	if (ic->mode != 'R') {  in dm_integrity_ctr()
4585 		r = create_journal(ic, &ti->error);  in dm_integrity_ctr()
4591 	if (ic->mode == 'B') {  in dm_integrity_ctr()
4593 		unsigned int n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE);  in dm_integrity_ctr()
4595 		ic->recalc_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages);  in dm_integrity_ctr()
4596 		if (!ic->recalc_bitmap) {  in dm_integrity_ctr()
4600 		ic->may_write_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages);  in dm_integrity_ctr()
4601 		if (!ic->may_write_bitmap) {  in dm_integrity_ctr()
4605 		ic->bbs = kvmalloc_array(ic->n_bitmap_blocks, sizeof(struct bitmap_block_status), GFP_KERNEL);  in dm_integrity_ctr()
4606 		if (!ic->bbs) {  in dm_integrity_ctr()
4610 		INIT_DELAYED_WORK(&ic->bitmap_flush_work, bitmap_flush_work);  in dm_integrity_ctr()
4611 		for (i = 0; i < ic->n_bitmap_blocks; i++) {  in dm_integrity_ctr()
4612 			struct bitmap_block_status *bbs = &ic->bbs[i];  in dm_integrity_ctr()
4616 			bbs->ic = ic;  in dm_integrity_ctr()
4625 			bbs->bitmap = lowmem_page_address(ic->journal[pl_index].page) + pl_offset;  in dm_integrity_ctr()
4630 		init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_ctr()
4631 		r = dm_integrity_failed(ic);  in dm_integrity_ctr()
4636 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_ctr()
4641 		ic->just_formatted = true;  in dm_integrity_ctr()
4644 	if (!ic->meta_dev) {  in dm_integrity_ctr()
4645 		r = dm_set_target_max_io_len(ti, 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_ctr()
4649 	if (ic->mode == 'B') {  in dm_integrity_ctr()
4652 …max_io_len = ((sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit) * (BITMAP_BLOCK_S…  in dm_integrity_ctr()
4663 	if (!ic->internal_hash)  in dm_integrity_ctr()
4664 		dm_integrity_set(ti, ic);  in dm_integrity_ctr()
4668 	if (ic->discard)  in dm_integrity_ctr()
4682 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_dtr()  local
4684 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));  in dm_integrity_dtr()
4685 	BUG_ON(!list_empty(&ic->wait_list));  in dm_integrity_dtr()
4687 	if (ic->mode == 'B')  in dm_integrity_dtr()
4688 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_dtr()
4689 	if (ic->metadata_wq)  in dm_integrity_dtr()
4690 		destroy_workqueue(ic->metadata_wq);  in dm_integrity_dtr()
4691 	if (ic->wait_wq)  in dm_integrity_dtr()
4692 		destroy_workqueue(ic->wait_wq);  in dm_integrity_dtr()
4693 	if (ic->offload_wq)  in dm_integrity_dtr()
4694 		destroy_workqueue(ic->offload_wq);  in dm_integrity_dtr()
4695 	if (ic->commit_wq)  in dm_integrity_dtr()
4696 		destroy_workqueue(ic->commit_wq);  in dm_integrity_dtr()
4697 	if (ic->writer_wq)  in dm_integrity_dtr()
4698 		destroy_workqueue(ic->writer_wq);  in dm_integrity_dtr()
4699 	if (ic->recalc_wq)  in dm_integrity_dtr()
4700 		destroy_workqueue(ic->recalc_wq);  in dm_integrity_dtr()
4701 	kvfree(ic->bbs);  in dm_integrity_dtr()
4702 	if (ic->bufio)  in dm_integrity_dtr()
4703 		dm_bufio_client_destroy(ic->bufio);  in dm_integrity_dtr()
4704 	mempool_exit(&ic->recheck_pool);  in dm_integrity_dtr()
4705 	mempool_exit(&ic->journal_io_mempool);  in dm_integrity_dtr()
4706 	if (ic->io)  in dm_integrity_dtr()
4707 		dm_io_client_destroy(ic->io);  in dm_integrity_dtr()
4708 	if (ic->dev)  in dm_integrity_dtr()
4709 		dm_put_device(ti, ic->dev);  in dm_integrity_dtr()
4710 	if (ic->meta_dev)  in dm_integrity_dtr()
4711 		dm_put_device(ti, ic->meta_dev);  in dm_integrity_dtr()
4712 	dm_integrity_free_page_list(ic->journal);  in dm_integrity_dtr()
4713 	dm_integrity_free_page_list(ic->journal_io);  in dm_integrity_dtr()
4714 	dm_integrity_free_page_list(ic->journal_xor);  in dm_integrity_dtr()
4715 	dm_integrity_free_page_list(ic->recalc_bitmap);  in dm_integrity_dtr()
4716 	dm_integrity_free_page_list(ic->may_write_bitmap);  in dm_integrity_dtr()
4717 	if (ic->journal_scatterlist)  in dm_integrity_dtr()
4718 		dm_integrity_free_journal_scatterlist(ic, ic->journal_scatterlist);  in dm_integrity_dtr()
4719 	if (ic->journal_io_scatterlist)  in dm_integrity_dtr()
4720 		dm_integrity_free_journal_scatterlist(ic, ic->journal_io_scatterlist);  in dm_integrity_dtr()
4721 	if (ic->sk_requests) {  in dm_integrity_dtr()
4724 		for (i = 0; i < ic->journal_sections; i++) {  in dm_integrity_dtr()
4727 			req = ic->sk_requests[i];  in dm_integrity_dtr()
4733 		kvfree(ic->sk_requests);  in dm_integrity_dtr()
4735 	kvfree(ic->journal_tree);  in dm_integrity_dtr()
4736 	if (ic->sb)  in dm_integrity_dtr()
4737 		free_pages_exact(ic->sb, SB_SECTORS << SECTOR_SHIFT);  in dm_integrity_dtr()
4739 	if (ic->internal_hash)  in dm_integrity_dtr()
4740 		crypto_free_shash(ic->internal_hash);  in dm_integrity_dtr()
4741 	free_alg(&ic->internal_hash_alg);  in dm_integrity_dtr()
4743 	if (ic->journal_crypt)  in dm_integrity_dtr()
4744 		crypto_free_skcipher(ic->journal_crypt);  in dm_integrity_dtr()
4745 	free_alg(&ic->journal_crypt_alg);  in dm_integrity_dtr()
4747 	if (ic->journal_mac)  in dm_integrity_dtr()
4748 		crypto_free_shash(ic->journal_mac);  in dm_integrity_dtr()
4749 	free_alg(&ic->journal_mac_alg);  in dm_integrity_dtr()
4751 	kfree(ic);  in dm_integrity_dtr()