107 #define journal_entry_tag(ic, je)		((__u8 *)&(je)->last_bytes[(ic)->sectors_per_block])  argument
300 	struct dm_integrity_c *ic;  member
318 	struct dm_integrity_c *ic;  member
330 	struct dm_integrity_c *ic;  member
374 static void dm_integrity_io_error(struct dm_integrity_c *ic, const char *msg, int err)  in dm_integrity_io_error()  argument
377 		atomic64_inc(&ic->number_of_mismatches);  in dm_integrity_io_error()
378 	if (!cmpxchg(&ic->failed, 0, err))  in dm_integrity_io_error()
382 static int dm_integrity_failed(struct dm_integrity_c *ic)  in dm_integrity_failed()  argument
384 	return READ_ONCE(ic->failed);  in dm_integrity_failed()
387 static bool dm_integrity_disable_recalculate(struct dm_integrity_c *ic)  in dm_integrity_disable_recalculate()  argument
389 	if (ic->legacy_recalculate)  in dm_integrity_disable_recalculate()
391 	if (!(ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) ?  in dm_integrity_disable_recalculate()
392 	    ic->internal_hash_alg.key || ic->journal_mac_alg.key :  in dm_integrity_disable_recalculate()
393 	    ic->internal_hash_alg.key && !ic->journal_mac_alg.key)  in dm_integrity_disable_recalculate()
398 static commit_id_t dm_integrity_commit_id(struct dm_integrity_c *ic, unsigned int i,  in dm_integrity_commit_id()  argument
405 	return ic->commit_ids[seq] ^ cpu_to_le64(((__u64)i << 32) ^ j);  in dm_integrity_commit_id()
408 static void get_area_and_offset(struct dm_integrity_c *ic, sector_t data_sector,  in get_area_and_offset()  argument
411 	if (!ic->meta_dev) {  in get_area_and_offset()
412 		__u8 log2_interleave_sectors = ic->sb->log2_interleave_sectors;  in get_area_and_offset()
421 #define sector_to_block(ic, n)						\  argument
423 	BUG_ON((n) & (unsigned int)((ic)->sectors_per_block - 1));		\
424 	(n) >>= (ic)->sb->log2_sectors_per_block;			\
427 static __u64 get_metadata_sector_and_offset(struct dm_integrity_c *ic, sector_t area,  in get_metadata_sector_and_offset()  argument
433 	ms = area << ic->sb->log2_interleave_sectors;  in get_metadata_sector_and_offset()
434 	if (likely(ic->log2_metadata_run >= 0))  in get_metadata_sector_and_offset()
435 		ms += area << ic->log2_metadata_run;  in get_metadata_sector_and_offset()
437 		ms += area * ic->metadata_run;  in get_metadata_sector_and_offset()
438 	ms >>= ic->log2_buffer_sectors;  in get_metadata_sector_and_offset()
440 	sector_to_block(ic, offset);  in get_metadata_sector_and_offset()
442 	if (likely(ic->log2_tag_size >= 0)) {  in get_metadata_sector_and_offset()
443 		ms += offset >> (SECTOR_SHIFT + ic->log2_buffer_sectors - ic->log2_tag_size);  in get_metadata_sector_and_offset()
444 		mo = (offset << ic->log2_tag_size) & ((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - 1);  in get_metadata_sector_and_offset()
446 		ms += (__u64)offset * ic->tag_size >> (SECTOR_SHIFT + ic->log2_buffer_sectors);  in get_metadata_sector_and_offset()
447 		mo = (offset * ic->tag_size) & ((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - 1);  in get_metadata_sector_and_offset()
453 static sector_t get_data_sector(struct dm_integrity_c *ic, sector_t area, sector_t offset)  in get_data_sector()  argument
457 	if (ic->meta_dev)  in get_data_sector()
460 	result = area << ic->sb->log2_interleave_sectors;  in get_data_sector()
461 	if (likely(ic->log2_metadata_run >= 0))  in get_data_sector()
462 		result += (area + 1) << ic->log2_metadata_run;  in get_data_sector()
464 		result += (area + 1) * ic->metadata_run;  in get_data_sector()
466 	result += (sector_t)ic->initial_sectors + offset;  in get_data_sector()
467 	result += ic->start;  in get_data_sector()
472 static void wraparound_section(struct dm_integrity_c *ic, unsigned int *sec_ptr)  in wraparound_section()  argument
474 	if (unlikely(*sec_ptr >= ic->journal_sections))  in wraparound_section()
475 		*sec_ptr -= ic->journal_sections;  in wraparound_section()
478 static void sb_set_version(struct dm_integrity_c *ic)  in sb_set_version()  argument
480 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC))  in sb_set_version()
481 		ic->sb->version = SB_VERSION_5;  in sb_set_version()
482 	else if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING))  in sb_set_version()
483 		ic->sb->version = SB_VERSION_4;  in sb_set_version()
484 	else if (ic->mode == 'B' || ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP))  in sb_set_version()
485 		ic->sb->version = SB_VERSION_3;  in sb_set_version()
486 	else if (ic->meta_dev || ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in sb_set_version()
487 		ic->sb->version = SB_VERSION_2;  in sb_set_version()
489 		ic->sb->version = SB_VERSION_1;  in sb_set_version()
492 static int sb_mac(struct dm_integrity_c *ic, bool wr)  in sb_mac()  argument
494 	SHASH_DESC_ON_STACK(desc, ic->journal_mac);  in sb_mac()
496 	unsigned int size = crypto_shash_digestsize(ic->journal_mac);  in sb_mac()
499 		dm_integrity_io_error(ic, "digest is too long", -EINVAL);  in sb_mac()
503 	desc->tfm = ic->journal_mac;  in sb_mac()
507 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in sb_mac()
511 	r = crypto_shash_update(desc, (__u8 *)ic->sb, (1 << SECTOR_SHIFT) - size);  in sb_mac()
513 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in sb_mac()
518 		r = crypto_shash_final(desc, (__u8 *)ic->sb + (1 << SECTOR_SHIFT) - size);  in sb_mac()
520 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in sb_mac()
528 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in sb_mac()
531 		if (memcmp((__u8 *)ic->sb + (1 << SECTOR_SHIFT) - size, result, size)) {  in sb_mac()
532 			dm_integrity_io_error(ic, "superblock mac", -EILSEQ);  in sb_mac()
533 			dm_audit_log_target(DM_MSG_PREFIX, "mac-superblock", ic->ti, 0);  in sb_mac()
541 static int sync_rw_sb(struct dm_integrity_c *ic, blk_opf_t opf)  in sync_rw_sb()  argument
550 	io_req.mem.ptr.addr = ic->sb;  in sync_rw_sb()
552 	io_req.client = ic->io;  in sync_rw_sb()
553 	io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev;  in sync_rw_sb()
554 	io_loc.sector = ic->start;  in sync_rw_sb()
558 		sb_set_version(ic);  in sync_rw_sb()
559 		if (ic->journal_mac && ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in sync_rw_sb()
560 			r = sb_mac(ic, true);  in sync_rw_sb()
571 		if (ic->mode != 'R' && ic->journal_mac && ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in sync_rw_sb()
572 			r = sb_mac(ic, false);  in sync_rw_sb()
586 static bool block_bitmap_op(struct dm_integrity_c *ic, struct page_list *bitmap,  in block_bitmap_op()  argument
592 	if (unlikely(((sector | n_sectors) & ((1 << ic->sb->log2_sectors_per_block) - 1)) != 0)) {  in block_bitmap_op()
596 			ic->sb->log2_sectors_per_block,  in block_bitmap_op()
597 			ic->log2_blocks_per_bitmap_bit,  in block_bitmap_op()
605 	bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in block_bitmap_op()
607 		(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in block_bitmap_op()
692 static void block_bitmap_copy(struct dm_integrity_c *ic, struct page_list *dst, struct page_list *s…  in block_bitmap_copy()  argument
694 	unsigned int n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE);  in block_bitmap_copy()
705 static struct bitmap_block_status *sector_to_bitmap_block(struct dm_integrity_c *ic, sector_t secto…  in sector_to_bitmap_block()  argument
707 	unsigned int bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in sector_to_bitmap_block()
710 	BUG_ON(bitmap_block >= ic->n_bitmap_blocks);  in sector_to_bitmap_block()
711 	return &ic->bbs[bitmap_block];  in sector_to_bitmap_block()
714 static void access_journal_check(struct dm_integrity_c *ic, unsigned int section, unsigned int offs…  in access_journal_check()  argument
718 	unsigned int limit = e ? ic->journal_section_entries : ic->journal_section_sectors;  in access_journal_check()
720 	if (unlikely(section >= ic->journal_sections) ||  in access_journal_check()
723 		       function, section, offset, ic->journal_sections, limit);  in access_journal_check()
729 static void page_list_location(struct dm_integrity_c *ic, unsigned int section, unsigned int offset,  in page_list_location()  argument
734 	access_journal_check(ic, section, offset, false, "page_list_location");  in page_list_location()
736 	sector = section * ic->journal_section_sectors + offset;  in page_list_location()
742 static struct journal_sector *access_page_list(struct dm_integrity_c *ic, struct page_list *pl,  in access_page_list()  argument
748 	page_list_location(ic, section, offset, &pl_index, &pl_offset);  in access_page_list()
758 static struct journal_sector *access_journal(struct dm_integrity_c *ic, unsigned int section, unsig…  in access_journal()  argument
760 	return access_page_list(ic, ic->journal, section, offset, NULL);  in access_journal()
763 static struct journal_entry *access_journal_entry(struct dm_integrity_c *ic, unsigned int section, …  in access_journal_entry()  argument
768 	access_journal_check(ic, section, n, true, "access_journal_entry");  in access_journal_entry()
773 	js = access_journal(ic, section, rel_sector);  in access_journal_entry()
774 	return (struct journal_entry *)((char *)js + offset * ic->journal_entry_size);  in access_journal_entry()
777 static struct journal_sector *access_journal_data(struct dm_integrity_c *ic, unsigned int section, …  in access_journal_data()  argument
779 	n <<= ic->sb->log2_sectors_per_block;  in access_journal_data()
783 	access_journal_check(ic, section, n, false, "access_journal_data");  in access_journal_data()
785 	return access_journal(ic, section, n);  in access_journal_data()
788 static void section_mac(struct dm_integrity_c *ic, unsigned int section, __u8 result[JOURNAL_MAC_SI…  in section_mac()  argument
790 	SHASH_DESC_ON_STACK(desc, ic->journal_mac);  in section_mac()
794 	desc->tfm = ic->journal_mac;  in section_mac()
798 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in section_mac()
802 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in section_mac()
805 		r = crypto_shash_update(desc, (__u8 *)&ic->sb->salt, SALT_SIZE);  in section_mac()
807 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
814 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
819 	for (j = 0; j < ic->journal_section_entries; j++) {  in section_mac()
820 		struct journal_entry *je = access_journal_entry(ic, section, j);  in section_mac()
824 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
829 	size = crypto_shash_digestsize(ic->journal_mac);  in section_mac()
834 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in section_mac()
842 			dm_integrity_io_error(ic, "digest_size", -EINVAL);  in section_mac()
847 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in section_mac()
858 static void rw_section_mac(struct dm_integrity_c *ic, unsigned int section, bool wr)  in rw_section_mac()  argument
863 	if (!ic->journal_mac)  in rw_section_mac()
866 	section_mac(ic, section, result);  in rw_section_mac()
869 		struct journal_sector *js = access_journal(ic, section, j);  in rw_section_mac()
875 				dm_integrity_io_error(ic, "journal mac", -EILSEQ);  in rw_section_mac()
876 				dm_audit_log_target(DM_MSG_PREFIX, "mac-journal", ic->ti, 0);  in rw_section_mac()
891 static void xor_journal(struct dm_integrity_c *ic, bool encrypt, unsigned int section,  in xor_journal()  argument
895 	size_t n_bytes = (size_t)(n_sections * ic->journal_section_sectors) << SECTOR_SHIFT;  in xor_journal()
900 		source_pl = ic->journal;  in xor_journal()
901 		target_pl = ic->journal_io;  in xor_journal()
903 		source_pl = ic->journal_io;  in xor_journal()
904 		target_pl = ic->journal;  in xor_journal()
907 	page_list_location(ic, section, 0, &pl_index, &pl_offset);  in xor_journal()
924 				rw_section_mac(ic, section, true);  in xor_journal()
929 			page_list_location(ic, section, 0, &section_index, &dummy);  in xor_journal()
935 		src_pages[1] = ic->journal_xor[pl_index].page;  in xor_journal()
955 			complete(&comp->ic->crypto_backoff);  in complete_journal_encrypt()
958 		dm_integrity_io_error(comp->ic, "asynchronous encrypt", err);  in complete_journal_encrypt()
978 		wait_for_completion(&comp->ic->crypto_backoff);  in do_crypt()
979 		reinit_completion(&comp->ic->crypto_backoff);  in do_crypt()
982 	dm_integrity_io_error(comp->ic, "encrypt", r);  in do_crypt()
986 static void crypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned int section,  in crypt_journal()  argument
995 		source_sg = ic->journal_scatterlist;  in crypt_journal()
996 		target_sg = ic->journal_io_scatterlist;  in crypt_journal()
998 		source_sg = ic->journal_io_scatterlist;  in crypt_journal()
999 		target_sg = ic->journal_scatterlist;  in crypt_journal()
1008 			rw_section_mac(ic, section, true);  in crypt_journal()
1010 		req = ic->sk_requests[section];  in crypt_journal()
1011 		ivsize = crypto_skcipher_ivsize(ic->journal_crypt);  in crypt_journal()
1030 static void encrypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned int section,  in encrypt_journal()  argument
1033 	if (ic->journal_xor)  in encrypt_journal()
1034 		return xor_journal(ic, encrypt, section, n_sections, comp);  in encrypt_journal()
1036 		return crypt_journal(ic, encrypt, section, n_sections, comp);  in encrypt_journal()
1044 		dm_integrity_io_error(comp->ic, "writing journal", -EIO);  in complete_journal_io()
1048 static void rw_journal_sectors(struct dm_integrity_c *ic, blk_opf_t opf,  in rw_journal_sectors()  argument
1057 	if (unlikely(dm_integrity_failed(ic))) {  in rw_journal_sectors()
1068 	if (ic->journal_io)  in rw_journal_sectors()
1069 		io_req.mem.ptr.pl = &ic->journal_io[pl_index];  in rw_journal_sectors()
1071 		io_req.mem.ptr.pl = &ic->journal[pl_index];  in rw_journal_sectors()
1079 	io_req.client = ic->io;  in rw_journal_sectors()
1080 	io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev;  in rw_journal_sectors()
1081 	io_loc.sector = ic->start + SB_SECTORS + sector;  in rw_journal_sectors()
1086 		dm_integrity_io_error(ic, (opf & REQ_OP_MASK) == REQ_OP_READ ?  in rw_journal_sectors()
1095 static void rw_journal(struct dm_integrity_c *ic, blk_opf_t opf,  in rw_journal()  argument
1101 	sector = section * ic->journal_section_sectors;  in rw_journal()
1102 	n_sectors = n_sections * ic->journal_section_sectors;  in rw_journal()
1104 	rw_journal_sectors(ic, opf, sector, n_sectors, comp);  in rw_journal()
1107 static void write_journal(struct dm_integrity_c *ic, unsigned int commit_start, unsigned int commit…  in write_journal()  argument
1114 	io_comp.ic = ic;  in write_journal()
1117 	if (commit_start + commit_sections <= ic->journal_sections) {  in write_journal()
1119 		if (ic->journal_io) {  in write_journal()
1120 			crypt_comp_1.ic = ic;  in write_journal()
1123 			encrypt_journal(ic, true, commit_start, commit_sections, &crypt_comp_1);  in write_journal()
1127 				rw_section_mac(ic, commit_start + i, true);  in write_journal()
1129 		rw_journal(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, commit_start,  in write_journal()
1135 		to_end = ic->journal_sections - commit_start;  in write_journal()
1136 		if (ic->journal_io) {  in write_journal()
1137 			crypt_comp_1.ic = ic;  in write_journal()
1140 			encrypt_journal(ic, true, commit_start, to_end, &crypt_comp_1);  in write_journal()
1142 				rw_journal(ic, REQ_OP_WRITE | REQ_FUA,  in write_journal()
1146 				encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_1);  in write_journal()
1149 				crypt_comp_2.ic = ic;  in write_journal()
1152 				encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_2);  in write_journal()
1154 				rw_journal(ic, REQ_OP_WRITE | REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1159 				rw_section_mac(ic, commit_start + i, true);  in write_journal()
1160 			rw_journal(ic, REQ_OP_WRITE | REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1162 				rw_section_mac(ic, i, true);  in write_journal()
1164 		rw_journal(ic, REQ_OP_WRITE | REQ_FUA, 0, commit_sections - to_end, &io_comp);  in write_journal()
1170 static void copy_from_journal(struct dm_integrity_c *ic, unsigned int section, unsigned int offset,  in copy_from_journal()  argument
1178 	BUG_ON((target | n_sectors | offset) & (unsigned int)(ic->sectors_per_block - 1));  in copy_from_journal()
1180 	if (unlikely(dm_integrity_failed(ic))) {  in copy_from_journal()
1185 	sector = section * ic->journal_section_sectors + JOURNAL_BLOCK_SECTORS + offset;  in copy_from_journal()
1192 	io_req.mem.ptr.pl = &ic->journal[pl_index];  in copy_from_journal()
1196 	io_req.client = ic->io;  in copy_from_journal()
1197 	io_loc.bdev = ic->dev->bdev;  in copy_from_journal()
1214 static bool add_new_range(struct dm_integrity_c *ic, struct dm_integrity_range *new_range, bool che…  in add_new_range()  argument
1216 	struct rb_node **n = &ic->in_progress.rb_node;  in add_new_range()
1219 …BUG_ON((new_range->logical_sector | new_range->n_sectors) & (unsigned int)(ic->sectors_per_block -…  in add_new_range()
1224 		list_for_each_entry(range, &ic->wait_list, wait_entry) {  in add_new_range()
1245 	rb_insert_color(&new_range->node, &ic->in_progress);  in add_new_range()
1250 static void remove_range_unlocked(struct dm_integrity_c *ic, struct dm_integrity_range *range)  in remove_range_unlocked()  argument
1252 	rb_erase(&range->node, &ic->in_progress);  in remove_range_unlocked()
1253 	while (unlikely(!list_empty(&ic->wait_list))) {  in remove_range_unlocked()
1255 			list_first_entry(&ic->wait_list, struct dm_integrity_range, wait_entry);  in remove_range_unlocked()
1260 		if (!add_new_range(ic, last_range, false)) {  in remove_range_unlocked()
1262 			list_add(&last_range->wait_entry, &ic->wait_list);  in remove_range_unlocked()
1270 static void remove_range(struct dm_integrity_c *ic, struct dm_integrity_range *range)  in remove_range()  argument
1274 	spin_lock_irqsave(&ic->endio_wait.lock, flags);  in remove_range()
1275 	remove_range_unlocked(ic, range);  in remove_range()
1276 	spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in remove_range()
1279 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
1282 	list_add_tail(&new_range->wait_entry, &ic->wait_list);  in wait_and_add_new_range()
1286 		spin_unlock_irq(&ic->endio_wait.lock);  in wait_and_add_new_range()
1288 		spin_lock_irq(&ic->endio_wait.lock);  in wait_and_add_new_range()
1292 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
1294 	if (unlikely(!add_new_range(ic, new_range, true)))  in add_new_range_and_wait()
1295 		wait_and_add_new_range(ic, new_range);  in add_new_range_and_wait()
1304 static void add_journal_node(struct dm_integrity_c *ic, struct journal_node *node, sector_t sector)  in add_journal_node()  argument
1312 	link = &ic->journal_tree_root.rb_node;  in add_journal_node()
1327 	rb_insert_color(&node->node, &ic->journal_tree_root);  in add_journal_node()
1330 static void remove_journal_node(struct dm_integrity_c *ic, struct journal_node *node)  in remove_journal_node()  argument
1333 	rb_erase(&node->node, &ic->journal_tree_root);  in remove_journal_node()
1339 static unsigned int find_journal_node(struct dm_integrity_c *ic, sector_t sector, sector_t *next_se…  in find_journal_node()  argument
1341 	struct rb_node *n = ic->journal_tree_root.rb_node;  in find_journal_node()
1349 			found = j - ic->journal_tree;  in find_journal_node()
1361 static bool test_journal_node(struct dm_integrity_c *ic, unsigned int pos, sector_t sector)  in test_journal_node()  argument
1366 	if (unlikely(pos >= ic->journal_entries))  in test_journal_node()
1368 	node = &ic->journal_tree[pos];  in test_journal_node()
1382 static bool find_newer_committed_node(struct dm_integrity_c *ic, struct journal_node *node)  in find_newer_committed_node()  argument
1399 	next_section = (unsigned int)(next_node - ic->journal_tree) / ic->journal_section_entries;  in find_newer_committed_node()
1400 	if (next_section >= ic->committed_section &&  in find_newer_committed_node()
1401 	    next_section < ic->committed_section + ic->n_committed_sections)  in find_newer_committed_node()
1403 	if (next_section + ic->journal_sections < ic->committed_section + ic->n_committed_sections)  in find_newer_committed_node()
1413 static int dm_integrity_rw_tag(struct dm_integrity_c *ic, unsigned char *tag, sector_t *metadata_bl…  in dm_integrity_rw_tag()  argument
1419 	unsigned int may_be = MAY_BE_HASH | (ic->discard ? MAY_BE_FILLER : 0);  in dm_integrity_rw_tag()
1427 		r = dm_integrity_failed(ic);  in dm_integrity_rw_tag()
1431 		data = dm_bufio_read(ic->bufio, *metadata_block, &b);  in dm_integrity_rw_tag()
1435 		to_copy = min((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - *metadata_offset, total_size);  in dm_integrity_rw_tag()
1447 			if (likely(is_power_of_2(ic->tag_size))) {  in dm_integrity_rw_tag()
1449 					if (unlikely(!ic->discard) ||  in dm_integrity_rw_tag()
1464 					if (unlikely(hash_offset == ic->tag_size)) {  in dm_integrity_rw_tag()
1470 						may_be = MAY_BE_HASH | (ic->discard ? MAY_BE_FILLER : 0);  in dm_integrity_rw_tag()
1479 		if (unlikely(*metadata_offset == 1U << SECTOR_SHIFT << ic->log2_buffer_sectors)) {  in dm_integrity_rw_tag()
1484 		if (unlikely(!is_power_of_2(ic->tag_size)))  in dm_integrity_rw_tag()
1485 			hash_offset = (hash_offset + to_copy) % ic->tag_size;  in dm_integrity_rw_tag()
1498 	struct dm_integrity_c *ic;  member
1507 		dm_integrity_io_error(fr->ic, "flushing disk cache", -EIO);  in flush_notify()
1511 static void dm_integrity_flush_buffers(struct dm_integrity_c *ic, bool flush_data)  in dm_integrity_flush_buffers()  argument
1516 	if (!ic->meta_dev)  in dm_integrity_flush_buffers()
1524 		fr.io_req.client = dm_bufio_get_dm_io_client(ic->bufio),  in dm_integrity_flush_buffers()
1525 		fr.io_reg.bdev = ic->dev->bdev,  in dm_integrity_flush_buffers()
1528 		fr.ic = ic;  in dm_integrity_flush_buffers()
1534 	r = dm_bufio_write_dirty_buffers(ic->bufio);  in dm_integrity_flush_buffers()
1536 		dm_integrity_io_error(ic, "writing tags", r);  in dm_integrity_flush_buffers()
1542 static void sleep_on_endio_wait(struct dm_integrity_c *ic)  in sleep_on_endio_wait()  argument
1546 	__add_wait_queue(&ic->endio_wait, &wait);  in sleep_on_endio_wait()
1548 	spin_unlock_irq(&ic->endio_wait.lock);  in sleep_on_endio_wait()
1550 	spin_lock_irq(&ic->endio_wait.lock);  in sleep_on_endio_wait()
1551 	__remove_wait_queue(&ic->endio_wait, &wait);  in sleep_on_endio_wait()
1556 	struct dm_integrity_c *ic = from_timer(ic, t, autocommit_timer);  in autocommit_fn()  local
1558 	if (likely(!dm_integrity_failed(ic)))  in autocommit_fn()
1559 		queue_work(ic->commit_wq, &ic->commit_work);  in autocommit_fn()
1562 static void schedule_autocommit(struct dm_integrity_c *ic)  in schedule_autocommit()  argument
1564 	if (!timer_pending(&ic->autocommit_timer))  in schedule_autocommit()
1565 		mod_timer(&ic->autocommit_timer, jiffies + ic->autocommit_jiffies);  in schedule_autocommit()
1568 static void submit_flush_bio(struct dm_integrity_c *ic, struct dm_integrity_io *dio)  in submit_flush_bio()  argument
1573 	spin_lock_irqsave(&ic->endio_wait.lock, flags);  in submit_flush_bio()
1575 	bio_list_add(&ic->flush_bio_list, bio);  in submit_flush_bio()
1576 	spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in submit_flush_bio()
1578 	queue_work(ic->commit_wq, &ic->commit_work);  in submit_flush_bio()
1581 static void do_endio(struct dm_integrity_c *ic, struct bio *bio)  in do_endio()  argument
1585 	r = dm_integrity_failed(ic);  in do_endio()
1588 	if (unlikely(ic->synchronous_mode) && bio_op(bio) == REQ_OP_WRITE) {  in do_endio()
1591 		spin_lock_irqsave(&ic->endio_wait.lock, flags);  in do_endio()
1592 		bio_list_add(&ic->synchronous_bios, bio);  in do_endio()
1593 		queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in do_endio()
1594 		spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in do_endio()
1600 static void do_endio_flush(struct dm_integrity_c *ic, struct dm_integrity_io *dio)  in do_endio_flush()  argument
1604 	if (unlikely(dio->fua) && likely(!bio->bi_status) && likely(!dm_integrity_failed(ic)))  in do_endio_flush()
1605 		submit_flush_bio(ic, dio);  in do_endio_flush()
1607 		do_endio(ic, bio);  in do_endio_flush()
1613 		struct dm_integrity_c *ic = dio->ic;  in dec_in_flight()  local
1616 		remove_range(ic, &dio->range);  in dec_in_flight()
1619 			schedule_autocommit(ic);  in dec_in_flight()
1628 			queue_work(ic->offload_wq, &dio->work);  in dec_in_flight()
1631 		do_endio_flush(ic, dio);  in dec_in_flight()
1649 static void integrity_sector_checksum(struct dm_integrity_c *ic, sector_t sector,  in integrity_sector_checksum()  argument
1653 	SHASH_DESC_ON_STACK(req, ic->internal_hash);  in integrity_sector_checksum()
1657 	req->tfm = ic->internal_hash;  in integrity_sector_checksum()
1661 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in integrity_sector_checksum()
1665 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in integrity_sector_checksum()
1666 		r = crypto_shash_update(req, (__u8 *)&ic->sb->salt, SALT_SIZE);  in integrity_sector_checksum()
1668 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1675 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1679 	r = crypto_shash_update(req, data, ic->sectors_per_block << SECTOR_SHIFT);  in integrity_sector_checksum()
1681 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1687 		dm_integrity_io_error(ic, "crypto_shash_final", r);  in integrity_sector_checksum()
1691 	digest_size = crypto_shash_digestsize(ic->internal_hash);  in integrity_sector_checksum()
1692 	if (unlikely(digest_size < ic->tag_size))  in integrity_sector_checksum()
1693 		memset(result + digest_size, 0, ic->tag_size - digest_size);  in integrity_sector_checksum()
1699 	get_random_bytes(result, ic->tag_size);  in integrity_sector_checksum()
1705 	struct dm_integrity_c *ic = dio->ic;  in integrity_metadata()  local
1709 	if (ic->internal_hash) {  in integrity_metadata()
1712 		unsigned int digest_size = crypto_shash_digestsize(ic->internal_hash);  in integrity_metadata()
1715 		unsigned int extra_space = unlikely(digest_size > ic->tag_size) ? digest_size - ic->tag_size : 0;  in integrity_metadata()
1720 		if (unlikely(ic->mode == 'R'))  in integrity_metadata()
1724 …checksums = kmalloc((PAGE_SIZE >> SECTOR_SHIFT >> ic->sb->log2_sectors_per_block) * ic->tag_size +…  in integrity_metadata()
1740 			unsigned int max_blocks = max_size / ic->tag_size;  in integrity_metadata()
1745 				unsigned int this_step_blocks = bi_size >> (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);  in integrity_metadata()
1748 				r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1749 							this_step_blocks * ic->tag_size, TAG_WRITE);  in integrity_metadata()
1756 				bi_size -= this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);  in integrity_metadata()
1776 				integrity_sector_checksum(ic, sector, mem + pos, checksums_ptr);  in integrity_metadata()
1777 				checksums_ptr += ic->tag_size;  in integrity_metadata()
1778 				sectors_to_process -= ic->sectors_per_block;  in integrity_metadata()
1779 				pos += ic->sectors_per_block << SECTOR_SHIFT;  in integrity_metadata()
1780 				sector += ic->sectors_per_block;  in integrity_metadata()
1784 			r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1790 					s = sector - ((r + ic->tag_size - 1) / ic->tag_size);  in integrity_metadata()
1794 					atomic64_inc(&ic->number_of_mismatches);  in integrity_metadata()
1823 			sector_to_block(ic, data_to_process);  in integrity_metadata()
1824 			data_to_process *= ic->tag_size;  in integrity_metadata()
1833 				r = dm_integrity_rw_tag(ic, tag, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1853 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_map()  local
1859 	dio->ic = ic;  in dm_integrity_map()
1879 		submit_flush_bio(ic, dio);  in dm_integrity_map()
1892 	if (unlikely(dio->range.logical_sector + bio_sectors(bio) > ic->provided_data_sectors)) {  in dm_integrity_map()
1895 		      ic->provided_data_sectors);  in dm_integrity_map()
1898 …if (unlikely((dio->range.logical_sector | bio_sectors(bio)) & (unsigned int)(ic->sectors_per_block…  in dm_integrity_map()
1900 		      ic->sectors_per_block,  in dm_integrity_map()
1905 	if (ic->sectors_per_block > 1 && likely(dio->op != REQ_OP_DISCARD)) {  in dm_integrity_map()
1910 			if (unlikely(bv.bv_len & ((ic->sectors_per_block << SECTOR_SHIFT) - 1))) {  in dm_integrity_map()
1912 					bv.bv_offset, bv.bv_len, ic->sectors_per_block);  in dm_integrity_map()
1919 	if (!ic->internal_hash) {  in dm_integrity_map()
1921 			unsigned int wanted_tag_size = bio_sectors(bio) >> ic->sb->log2_sectors_per_block;  in dm_integrity_map()
1923 			if (ic->log2_tag_size >= 0)  in dm_integrity_map()
1924 				wanted_tag_size <<= ic->log2_tag_size;  in dm_integrity_map()
1926 				wanted_tag_size *= ic->tag_size;  in dm_integrity_map()
1940 	if (unlikely(ic->mode == 'R') && unlikely(dio->op != REQ_OP_READ))  in dm_integrity_map()
1943 	get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in dm_integrity_map()
1944 	dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset);  in dm_integrity_map()
1945 	bio->bi_iter.bi_sector = get_data_sector(ic, area, offset);  in dm_integrity_map()
1954 	struct dm_integrity_c *ic = dio->ic;  in __journal_read_write()  local
1974 			struct journal_entry *je = access_journal_entry(ic, journal_section, journal_entry);  in __journal_read_write()
1985 					__io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je));  in __journal_read_write()
1990 				js = access_journal_data(ic, journal_section, journal_entry);  in __journal_read_write()
1998 				} while (++s < ic->sectors_per_block);  in __journal_read_write()
2000 				if (ic->internal_hash) {  in __journal_read_write()
2003 					integrity_sector_checksum(ic, logical_sector, mem + bv.bv_offset, checksums_onstack);  in __journal_read_write()
2004 					if (unlikely(memcmp(checksums_onstack, journal_entry_tag(ic, je), ic->tag_size))) {  in __journal_read_write()
2014 			if (!ic->internal_hash) {  in __journal_read_write()
2016 				unsigned int tag_todo = ic->tag_size;  in __journal_read_write()
2017 				char *tag_ptr = journal_entry_tag(ic, je);  in __journal_read_write()
2043 				js = access_journal_data(ic, journal_section, journal_entry);  in __journal_read_write()
2044 				memcpy(js, mem + bv.bv_offset, ic->sectors_per_block << SECTOR_SHIFT);  in __journal_read_write()
2049 				} while (++s < ic->sectors_per_block);  in __journal_read_write()
2051 				if (ic->internal_hash) {  in __journal_read_write()
2052 					unsigned int digest_size = crypto_shash_digestsize(ic->internal_hash);  in __journal_read_write()
2054 					if (unlikely(digest_size > ic->tag_size)) {  in __journal_read_write()
2057 						integrity_sector_checksum(ic, logical_sector, (char *)js, checksums_onstack);  in __journal_read_write()
2058 						memcpy(journal_entry_tag(ic, je), checksums_onstack, ic->tag_size);  in __journal_read_write()
2060 						integrity_sector_checksum(ic, logical_sector, (char *)js, journal_entry_tag(ic, je));  in __journal_read_write()
2065 			logical_sector += ic->sectors_per_block;  in __journal_read_write()
2068 			if (unlikely(journal_entry == ic->journal_section_entries)) {  in __journal_read_write()
2071 				wraparound_section(ic, &journal_section);  in __journal_read_write()
2074 			bv.bv_offset += ic->sectors_per_block << SECTOR_SHIFT;  in __journal_read_write()
2075 		} while (bv.bv_len -= ic->sectors_per_block << SECTOR_SHIFT);  in __journal_read_write()
2084 		if (unlikely(waitqueue_active(&ic->copy_to_journal_wait)))  in __journal_read_write()
2085 			wake_up(&ic->copy_to_journal_wait);  in __journal_read_write()
2086 		if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold)  in __journal_read_write()
2087 			queue_work(ic->commit_wq, &ic->commit_work);  in __journal_read_write()
2089 			schedule_autocommit(ic);  in __journal_read_write()
2091 		remove_range(ic, &dio->range);  in __journal_read_write()
2097 		get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in __journal_read_write()
2098 		dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset);  in __journal_read_write()
2107 	struct dm_integrity_c *ic = dio->ic;  in dm_integrity_map_continue()  local
2113 	bool need_sync_io = ic->internal_hash && dio->op == REQ_OP_READ;  in dm_integrity_map_continue()
2115 	if (unlikely(dio->op == REQ_OP_DISCARD) && ic->mode != 'D')  in dm_integrity_map_continue()
2120 		queue_work(ic->offload_wq, &dio->work);  in dm_integrity_map_continue()
2125 	spin_lock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2127 	if (unlikely(dm_integrity_failed(ic))) {  in dm_integrity_map_continue()
2128 		spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2129 		do_endio(ic, bio);  in dm_integrity_map_continue()
2134 	if (ic->mode == 'J' && likely(dio->op != REQ_OP_DISCARD)) {  in dm_integrity_map_continue()
2140 						   (sector_t)ic->free_sectors << ic->sb->log2_sectors_per_block);  in dm_integrity_map_continue()
2144 				sleep_on_endio_wait(ic);  in dm_integrity_map_continue()
2147 			range_sectors = dio->range.n_sectors >> ic->sb->log2_sectors_per_block;  in dm_integrity_map_continue()
2148 			ic->free_sectors -= range_sectors;  in dm_integrity_map_continue()
2149 			journal_section = ic->free_section;  in dm_integrity_map_continue()
2150 			journal_entry = ic->free_section_entry;  in dm_integrity_map_continue()
2152 			next_entry = ic->free_section_entry + range_sectors;  in dm_integrity_map_continue()
2153 			ic->free_section_entry = next_entry % ic->journal_section_entries;  in dm_integrity_map_continue()
2154 			ic->free_section += next_entry / ic->journal_section_entries;  in dm_integrity_map_continue()
2155 			ic->n_uncommitted_sections += next_entry / ic->journal_section_entries;  in dm_integrity_map_continue()
2156 			wraparound_section(ic, &ic->free_section);  in dm_integrity_map_continue()
2158 			pos = journal_section * ic->journal_section_entries + journal_entry;  in dm_integrity_map_continue()
2165 				add_journal_node(ic, &ic->journal_tree[pos], dio->range.logical_sector + i);  in dm_integrity_map_continue()
2167 				if (unlikely(pos >= ic->journal_entries))  in dm_integrity_map_continue()
2170 				je = access_journal_entry(ic, ws, we);  in dm_integrity_map_continue()
2174 				if (unlikely(we == ic->journal_section_entries)) {  in dm_integrity_map_continue()
2177 					wraparound_section(ic, &ws);  in dm_integrity_map_continue()
2179 			} while ((i += ic->sectors_per_block) < dio->range.n_sectors);  in dm_integrity_map_continue()
2181 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2186 			journal_read_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2194 				for (i = ic->sectors_per_block; i < dio->range.n_sectors; i += ic->sectors_per_block, jp++) {  in dm_integrity_map_continue()
2195 					if (!test_journal_node(ic, jp, dio->range.logical_sector + i))  in dm_integrity_map_continue()
2202 	if (unlikely(!add_new_range(ic, &dio->range, true))) {  in dm_integrity_map_continue()
2210 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2212 			queue_work(ic->wait_wq, &dio->work);  in dm_integrity_map_continue()
2216 			dio->range.n_sectors = ic->sectors_per_block;  in dm_integrity_map_continue()
2217 		wait_and_add_new_range(ic, &dio->range);  in dm_integrity_map_continue()
2227 			new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2229 				remove_range_unlocked(ic, &dio->range);  in dm_integrity_map_continue()
2234 	if (ic->mode == 'J' && likely(dio->op == REQ_OP_DISCARD) && !discard_retried) {  in dm_integrity_map_continue()
2238 		new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2241 			remove_range_unlocked(ic, &dio->range);  in dm_integrity_map_continue()
2242 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2243 			queue_work(ic->commit_wq, &ic->commit_work);  in dm_integrity_map_continue()
2244 			flush_workqueue(ic->commit_wq);  in dm_integrity_map_continue()
2245 			queue_work(ic->writer_wq, &ic->writer_work);  in dm_integrity_map_continue()
2246 			flush_workqueue(ic->writer_wq);  in dm_integrity_map_continue()
2251 	spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2254 		journal_section = journal_read_pos / ic->journal_section_entries;  in dm_integrity_map_continue()
2255 		journal_entry = journal_read_pos % ic->journal_section_entries;  in dm_integrity_map_continue()
2259 	if (ic->mode == 'B' && (dio->op == REQ_OP_WRITE || unlikely(dio->op == REQ_OP_DISCARD))) {  in dm_integrity_map_continue()
2260 		if (!block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in dm_integrity_map_continue()
2264 			bbs = sector_to_bitmap_block(ic, dio->range.logical_sector);  in dm_integrity_map_continue()
2268 			queue_work(ic->writer_wq, &bbs->work);  in dm_integrity_map_continue()
2282 	bio_set_dev(bio, ic->dev->bdev);  in dm_integrity_map_continue()
2288 	if (unlikely(dio->op == REQ_OP_DISCARD) && likely(ic->mode != 'D')) {  in dm_integrity_map_continue()
2290 		dm_integrity_flush_buffers(ic, false);  in dm_integrity_map_continue()
2304 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_map_continue()
2305 		    dio->range.logical_sector + dio->range.n_sectors > le64_to_cpu(ic->sb->recalc_sector))  in dm_integrity_map_continue()
2307 		if (ic->mode == 'B') {  in dm_integrity_map_continue()
2308 			if (!block_bitmap_op(ic, ic->recalc_bitmap, dio->range.logical_sector,  in dm_integrity_map_continue()
2320 		queue_work(ic->metadata_wq, &dio->work);  in dm_integrity_map_continue()
2329 	do_endio_flush(ic, dio);  in dm_integrity_map_continue()
2340 static void pad_uncommitted(struct dm_integrity_c *ic)  in pad_uncommitted()  argument
2342 	if (ic->free_section_entry) {  in pad_uncommitted()
2343 		ic->free_sectors -= ic->journal_section_entries - ic->free_section_entry;  in pad_uncommitted()
2344 		ic->free_section_entry = 0;  in pad_uncommitted()
2345 		ic->free_section++;  in pad_uncommitted()
2346 		wraparound_section(ic, &ic->free_section);  in pad_uncommitted()
2347 		ic->n_uncommitted_sections++;  in pad_uncommitted()
2349 	if (WARN_ON(ic->journal_sections * ic->journal_section_entries !=  in pad_uncommitted()
2350 		    (ic->n_uncommitted_sections + ic->n_committed_sections) *  in pad_uncommitted()
2351 		    ic->journal_section_entries + ic->free_sectors)) {  in pad_uncommitted()
2355 		       ic->journal_sections, ic->journal_section_entries,  in pad_uncommitted()
2356 		       ic->n_uncommitted_sections, ic->n_committed_sections,  in pad_uncommitted()
2357 		       ic->journal_section_entries, ic->free_sectors);  in pad_uncommitted()
2363 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, commit_work);  in integrity_commit()  local
2368 	del_timer(&ic->autocommit_timer);  in integrity_commit()
2370 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_commit()
2371 	flushes = bio_list_get(&ic->flush_bio_list);  in integrity_commit()
2372 	if (unlikely(ic->mode != 'J')) {  in integrity_commit()
2373 		spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2374 		dm_integrity_flush_buffers(ic, true);  in integrity_commit()
2378 	pad_uncommitted(ic);  in integrity_commit()
2379 	commit_start = ic->uncommitted_section;  in integrity_commit()
2380 	commit_sections = ic->n_uncommitted_sections;  in integrity_commit()
2381 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2386 	ic->wrote_to_journal = true;  in integrity_commit()
2390 		for (j = 0; j < ic->journal_section_entries; j++) {  in integrity_commit()
2393 			je = access_journal_entry(ic, i, j);  in integrity_commit()
2394 			io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je));  in integrity_commit()
2396 		for (j = 0; j < ic->journal_section_sectors; j++) {  in integrity_commit()
2399 			js = access_journal(ic, i, j);  in integrity_commit()
2400 			js->commit_id = dm_integrity_commit_id(ic, i, j, ic->commit_seq);  in integrity_commit()
2403 		if (unlikely(i >= ic->journal_sections))  in integrity_commit()
2404 			ic->commit_seq = next_commit_seq(ic->commit_seq);  in integrity_commit()
2405 		wraparound_section(ic, &i);  in integrity_commit()
2409 	write_journal(ic, commit_start, commit_sections);  in integrity_commit()
2411 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_commit()
2412 	ic->uncommitted_section += commit_sections;  in integrity_commit()
2413 	wraparound_section(ic, &ic->uncommitted_section);  in integrity_commit()
2414 	ic->n_uncommitted_sections -= commit_sections;  in integrity_commit()
2415 	ic->n_committed_sections += commit_sections;  in integrity_commit()
2416 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2418 	if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold)  in integrity_commit()
2419 		queue_work(ic->writer_wq, &ic->writer_work);  in integrity_commit()
2426 		do_endio(ic, flushes);  in integrity_commit()
2435 	struct dm_integrity_c *ic = comp->ic;  in complete_copy_from_journal()  local
2437 	remove_range(ic, &io->range);  in complete_copy_from_journal()
2438 	mempool_free(io, &ic->journal_io_mempool);  in complete_copy_from_journal()
2440 		dm_integrity_io_error(ic, "copying from journal", -EIO);  in complete_copy_from_journal()
2444 static void restore_last_bytes(struct dm_integrity_c *ic, struct journal_sector *js,  in restore_last_bytes()  argument
2452 	} while (++s < ic->sectors_per_block);  in restore_last_bytes()
2455 static void do_journal_write(struct dm_integrity_c *ic, unsigned int write_start,  in do_journal_write()  argument
2464 	comp.ic = ic;  in do_journal_write()
2469 	for (n = 0; n < write_sections; n++, i++, wraparound_section(ic, &i)) {  in do_journal_write()
2473 			rw_section_mac(ic, i, false);  in do_journal_write()
2474 		for (j = 0; j < ic->journal_section_entries; j++) {  in do_journal_write()
2475 			struct journal_entry *je = access_journal_entry(ic, i, j);  in do_journal_write()
2487 				if (unlikely(sec & (unsigned int)(ic->sectors_per_block - 1))) {  in do_journal_write()
2488 					dm_integrity_io_error(ic, "invalid sector in journal", -EIO);  in do_journal_write()
2489 					sec &= ~(sector_t)(ic->sectors_per_block - 1);  in do_journal_write()
2491 				if (unlikely(sec >= ic->provided_data_sectors)) {  in do_journal_write()
2496 			get_area_and_offset(ic, sec, &area, &offset);  in do_journal_write()
2497 			restore_last_bytes(ic, access_journal_data(ic, i, j), je);  in do_journal_write()
2498 			for (k = j + 1; k < ic->journal_section_entries; k++) {  in do_journal_write()
2499 				struct journal_entry *je2 = access_journal_entry(ic, i, k);  in do_journal_write()
2506 				if (unlikely(sec2 >= ic->provided_data_sectors))  in do_journal_write()
2508 				get_area_and_offset(ic, sec2, &area2, &offset2);  in do_journal_write()
2509 				if (area2 != area || offset2 != offset + ((k - j) << ic->sb->log2_sectors_per_block))  in do_journal_write()
2511 				restore_last_bytes(ic, access_journal_data(ic, i, k), je2);  in do_journal_write()
2515 			io = mempool_alloc(&ic->journal_io_mempool, GFP_NOIO);  in do_journal_write()
2518 			io->range.n_sectors = (k - j) << ic->sb->log2_sectors_per_block;  in do_journal_write()
2520 			spin_lock_irq(&ic->endio_wait.lock);  in do_journal_write()
2521 			add_new_range_and_wait(ic, &io->range);  in do_journal_write()
2524 				struct journal_node *section_node = &ic->journal_tree[i * ic->journal_section_entries];  in do_journal_write()
2527 				while (j < k && find_newer_committed_node(ic, &section_node[j])) {  in do_journal_write()
2528 					struct journal_entry *je2 = access_journal_entry(ic, i, j);  in do_journal_write()
2531 					remove_journal_node(ic, &section_node[j]);  in do_journal_write()
2533 					sec += ic->sectors_per_block;  in do_journal_write()
2534 					offset += ic->sectors_per_block;  in do_journal_write()
2536 				while (j < k && find_newer_committed_node(ic, &section_node[k - 1])) {  in do_journal_write()
2537 					struct journal_entry *je2 = access_journal_entry(ic, i, k - 1);  in do_journal_write()
2540 					remove_journal_node(ic, &section_node[k - 1]);  in do_journal_write()
2544 					remove_range_unlocked(ic, &io->range);  in do_journal_write()
2545 					spin_unlock_irq(&ic->endio_wait.lock);  in do_journal_write()
2546 					mempool_free(io, &ic->journal_io_mempool);  in do_journal_write()
2550 					remove_journal_node(ic, &section_node[l]);  in do_journal_write()
2552 			spin_unlock_irq(&ic->endio_wait.lock);  in do_journal_write()
2554 			metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset);  in do_journal_write()
2557 				struct journal_entry *je2 = access_journal_entry(ic, i, l);  in do_journal_write()
2563 				    ic->internal_hash) {  in do_journal_write()
2566 					integrity_sector_checksum(ic, sec + ((l - j) << ic->sb->log2_sectors_per_block),  in do_journal_write()
2567 								  (char *)access_journal_data(ic, i, l), test_tag);  in do_journal_write()
2568 					if (unlikely(memcmp(test_tag, journal_entry_tag(ic, je2), ic->tag_size))) {  in do_journal_write()
2569 						dm_integrity_io_error(ic, "tag mismatch when replaying journal", -EILSEQ);  in do_journal_write()
2570 						dm_audit_log_target(DM_MSG_PREFIX, "integrity-replay-journal", ic->ti, 0);  in do_journal_write()
2575 				r = dm_integrity_rw_tag(ic, journal_entry_tag(ic, je2), &metadata_block, &metadata_offset,  in do_journal_write()
2576 							ic->tag_size, TAG_WRITE);  in do_journal_write()
2578 					dm_integrity_io_error(ic, "reading tags", r);  in do_journal_write()
2582 			copy_from_journal(ic, i, j << ic->sb->log2_sectors_per_block,  in do_journal_write()
2583 					  (k - j) << ic->sb->log2_sectors_per_block,  in do_journal_write()
2584 					  get_data_sector(ic, area, offset),  in do_journal_write()
2591 	dm_bufio_write_dirty_buffers_async(ic->bufio);  in do_journal_write()
2598 	dm_integrity_flush_buffers(ic, true);  in do_journal_write()
2603 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, writer_work);  in integrity_writer()  local
2607 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_writer()
2608 	write_start = ic->committed_section;  in integrity_writer()
2609 	write_sections = ic->n_committed_sections;  in integrity_writer()
2610 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_writer()
2615 	do_journal_write(ic, write_start, write_sections, false);  in integrity_writer()
2617 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_writer()
2619 	ic->committed_section += write_sections;  in integrity_writer()
2620 	wraparound_section(ic, &ic->committed_section);  in integrity_writer()
2621 	ic->n_committed_sections -= write_sections;  in integrity_writer()
2623 	prev_free_sectors = ic->free_sectors;  in integrity_writer()
2624 	ic->free_sectors += write_sections * ic->journal_section_entries;  in integrity_writer()
2626 		wake_up_locked(&ic->endio_wait);  in integrity_writer()
2628 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_writer()
2631 static void recalc_write_super(struct dm_integrity_c *ic)  in recalc_write_super()  argument
2635 	dm_integrity_flush_buffers(ic, false);  in recalc_write_super()
2636 	if (dm_integrity_failed(ic))  in recalc_write_super()
2639 	r = sync_rw_sb(ic, REQ_OP_WRITE);  in recalc_write_super()
2641 		dm_integrity_io_error(ic, "writing superblock", r);  in recalc_write_super()
2646 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, recalc_work);  in integrity_recalc()  local
2668 		if (recalc_sectors >= 1U << ic->sb->log2_sectors_per_block)  in integrity_recalc()
2673 	recalc_tags_size = (recalc_sectors >> ic->sb->log2_sectors_per_block) * ic->tag_size;  in integrity_recalc()
2674 	if (crypto_shash_digestsize(ic->internal_hash) > ic->tag_size)  in integrity_recalc()
2675 		recalc_tags_size += crypto_shash_digestsize(ic->internal_hash) - ic->tag_size;  in integrity_recalc()
2683 	DEBUG_print("start recalculation... (position %llx)\n", le64_to_cpu(ic->sb->recalc_sector));  in integrity_recalc()
2685 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2689 	if (unlikely(dm_post_suspending(ic->ti)))  in integrity_recalc()
2692 	range.logical_sector = le64_to_cpu(ic->sb->recalc_sector);  in integrity_recalc()
2693 	if (unlikely(range.logical_sector >= ic->provided_data_sectors)) {  in integrity_recalc()
2694 		if (ic->mode == 'B') {  in integrity_recalc()
2695 			block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in integrity_recalc()
2697 			queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in integrity_recalc()
2702 	get_area_and_offset(ic, range.logical_sector, &area, &offset);  in integrity_recalc()
2703 	range.n_sectors = min((sector_t)recalc_sectors, ic->provided_data_sectors - range.logical_sector);  in integrity_recalc()
2704 	if (!ic->meta_dev)  in integrity_recalc()
2705 …range.n_sectors = min(range.n_sectors, ((sector_t)1U << ic->sb->log2_interleave_sectors) - (unsign…  in integrity_recalc()
2707 	add_new_range_and_wait(ic, &range);  in integrity_recalc()
2708 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2712 	if (ic->mode == 'B') {  in integrity_recalc()
2713 		if (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector, n_sectors, BITMAP_OP_TEST_ALL_CLEAR))  in integrity_recalc()
2716 		while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector,  in integrity_recalc()
2717 				       ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2718 			logical_sector += ic->sectors_per_block;  in integrity_recalc()
2719 			n_sectors -= ic->sectors_per_block;  in integrity_recalc()
2722 		while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector + n_sectors - ic->sectors_per_block,  in integrity_recalc()
2723 				       ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2724 			n_sectors -= ic->sectors_per_block;  in integrity_recalc()
2727 		get_area_and_offset(ic, logical_sector, &area, &offset);  in integrity_recalc()
2733 		recalc_write_super(ic);  in integrity_recalc()
2734 		if (ic->mode == 'B')  in integrity_recalc()
2735 			queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval);  in integrity_recalc()
2740 	if (unlikely(dm_integrity_failed(ic)))  in integrity_recalc()
2747 	io_req.client = ic->io;  in integrity_recalc()
2748 	io_loc.bdev = ic->dev->bdev;  in integrity_recalc()
2749 	io_loc.sector = get_data_sector(ic, area, offset);  in integrity_recalc()
2754 		dm_integrity_io_error(ic, "reading data", r);  in integrity_recalc()
2759 	for (i = 0; i < n_sectors; i += ic->sectors_per_block) {  in integrity_recalc()
2760 		integrity_sector_checksum(ic, logical_sector + i, recalc_buffer + (i << SECTOR_SHIFT), t);  in integrity_recalc()
2761 		t += ic->tag_size;  in integrity_recalc()
2764 	metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset);  in integrity_recalc()
2766 …r = dm_integrity_rw_tag(ic, recalc_tags, &metadata_block, &metadata_offset, t - recalc_tags, TAG_W…  in integrity_recalc()
2768 		dm_integrity_io_error(ic, "writing tags", r);  in integrity_recalc()
2772 	if (ic->mode == 'B') {  in integrity_recalc()
2776 			 (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) <<  in integrity_recalc()
2777 			(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in integrity_recalc()
2779 		       (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) <<  in integrity_recalc()
2780 			(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in integrity_recalc()
2781 		block_bitmap_op(ic, ic->recalc_bitmap, start, end - start, BITMAP_OP_CLEAR);  in integrity_recalc()
2787 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2788 	remove_range_unlocked(ic, &range);  in integrity_recalc()
2789 	ic->sb->recalc_sector = cpu_to_le64(range.logical_sector + range.n_sectors);  in integrity_recalc()
2793 	remove_range(ic, &range);  in integrity_recalc()
2797 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2799 	recalc_write_super(ic);  in integrity_recalc()
2809 	struct dm_integrity_c *ic = bbs->ic;  in bitmap_block_work()  local
2826 		if (block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in bitmap_block_work()
2828 			remove_range(ic, &dio->range);  in bitmap_block_work()
2830 			queue_work(ic->offload_wq, &dio->work);  in bitmap_block_work()
2832 			block_bitmap_op(ic, ic->journal, dio->range.logical_sector,  in bitmap_block_work()
2841 	rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC,  in bitmap_block_work()
2848 		block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in bitmap_block_work()
2851 		remove_range(ic, &dio->range);  in bitmap_block_work()
2853 		queue_work(ic->offload_wq, &dio->work);  in bitmap_block_work()
2856 	queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval);  in bitmap_block_work()
2861 	struct dm_integrity_c *ic = container_of(work, struct dm_integrity_c, bitmap_flush_work.work);  in bitmap_flush_work()  local
2866 	dm_integrity_flush_buffers(ic, false);  in bitmap_flush_work()
2869 	range.n_sectors = ic->provided_data_sectors;  in bitmap_flush_work()
2871 	spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2872 	add_new_range_and_wait(ic, &range);  in bitmap_flush_work()
2873 	spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2875 	dm_integrity_flush_buffers(ic, true);  in bitmap_flush_work()
2877 	limit = ic->provided_data_sectors;  in bitmap_flush_work()
2878 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in bitmap_flush_work()
2879 		limit = le64_to_cpu(ic->sb->recalc_sector)  in bitmap_flush_work()
2880 			>> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)  in bitmap_flush_work()
2881 			<< (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in bitmap_flush_work()
2884 	block_bitmap_op(ic, ic->journal, 0, limit, BITMAP_OP_CLEAR);  in bitmap_flush_work()
2885 	block_bitmap_op(ic, ic->may_write_bitmap, 0, limit, BITMAP_OP_CLEAR);  in bitmap_flush_work()
2887 	rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in bitmap_flush_work()
2888 			   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in bitmap_flush_work()
2890 	spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2891 	remove_range_unlocked(ic, &range);  in bitmap_flush_work()
2892 	while (unlikely((bio = bio_list_pop(&ic->synchronous_bios)) != NULL)) {  in bitmap_flush_work()
2894 		spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2895 		spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2897 	spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2901 static void init_journal(struct dm_integrity_c *ic, unsigned int start_section,  in init_journal()  argument
2911 		wraparound_section(ic, &i);  in init_journal()
2912 		for (j = 0; j < ic->journal_section_sectors; j++) {  in init_journal()
2913 			struct journal_sector *js = access_journal(ic, i, j);  in init_journal()
2917 			js->commit_id = dm_integrity_commit_id(ic, i, j, commit_seq);  in init_journal()
2919 		for (j = 0; j < ic->journal_section_entries; j++) {  in init_journal()
2920 			struct journal_entry *je = access_journal_entry(ic, i, j);  in init_journal()
2926 	write_journal(ic, start_section, n_sections);  in init_journal()
2929 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
2934 		if (dm_integrity_commit_id(ic, i, j, k) == id)  in find_commit_seq()
2937 	dm_integrity_io_error(ic, "journal commit id", -EIO);  in find_commit_seq()
2941 static void replay_journal(struct dm_integrity_c *ic)  in replay_journal()  argument
2951 	if (ic->mode == 'R')  in replay_journal()
2954 	if (ic->journal_uptodate)  in replay_journal()
2960 	if (!ic->just_formatted) {  in replay_journal()
2962 		rw_journal(ic, REQ_OP_READ, 0, ic->journal_sections, NULL);  in replay_journal()
2963 		if (ic->journal_io)  in replay_journal()
2964 			DEBUG_bytes(lowmem_page_address(ic->journal_io[0].page), 64, "read journal");  in replay_journal()
2965 		if (ic->journal_io) {  in replay_journal()
2968 			crypt_comp.ic = ic;  in replay_journal()
2971 			encrypt_journal(ic, false, 0, ic->journal_sections, &crypt_comp);  in replay_journal()
2974 		DEBUG_bytes(lowmem_page_address(ic->journal[0].page), 64, "decrypted journal");  in replay_journal()
2977 	if (dm_integrity_failed(ic))  in replay_journal()
2983 	for (i = 0; i < ic->journal_sections; i++) {  in replay_journal()
2984 		for (j = 0; j < ic->journal_section_sectors; j++) {  in replay_journal()
2986 			struct journal_sector *js = access_journal(ic, i, j);  in replay_journal()
2988 			k = find_commit_seq(ic, i, j, js->commit_id);  in replay_journal()
2995 			for (j = 0; j < ic->journal_section_entries; j++) {  in replay_journal()
2996 				struct journal_entry *je = access_journal_entry(ic, i, j);  in replay_journal()
3015 			dm_integrity_io_error(ic, "journal commit ids", -EIO);  in replay_journal()
3030 	if (unlikely(write_start >= ic->journal_sections))  in replay_journal()
3032 	wraparound_section(ic, &write_start);  in replay_journal()
3035 	for (write_sections = 0; write_sections < ic->journal_sections; write_sections++) {  in replay_journal()
3036 		for (j = 0; j < ic->journal_section_sectors; j++) {  in replay_journal()
3037 			struct journal_sector *js = access_journal(ic, i, j);  in replay_journal()
3039 			if (js->commit_id != dm_integrity_commit_id(ic, i, j, want_commit_seq)) {  in replay_journal()
3046 					    i, j, find_commit_seq(ic, i, j, js->commit_id), want_commit_seq);  in replay_journal()
3051 		if (unlikely(i >= ic->journal_sections))  in replay_journal()
3053 		wraparound_section(ic, &i);  in replay_journal()
3060 		do_journal_write(ic, write_start, write_sections, true);  in replay_journal()
3063 	if (write_sections == ic->journal_sections && (ic->mode == 'J' || journal_empty)) {  in replay_journal()
3065 		ic->commit_seq = want_commit_seq;  in replay_journal()
3066 		DEBUG_print("continuing from section %u, commit seq %d\n", write_start, ic->commit_seq);  in replay_journal()
3076 		init_journal(ic, s, 1, erase_seq);  in replay_journal()
3078 		wraparound_section(ic, &s);  in replay_journal()
3079 		if (ic->journal_sections >= 2) {  in replay_journal()
3080 			init_journal(ic, s, ic->journal_sections - 2, erase_seq);  in replay_journal()
3081 			s += ic->journal_sections - 2;  in replay_journal()
3082 			wraparound_section(ic, &s);  in replay_journal()
3083 			init_journal(ic, s, 1, erase_seq);  in replay_journal()
3087 		ic->commit_seq = next_commit_seq(erase_seq);  in replay_journal()
3090 	ic->committed_section = continue_section;  in replay_journal()
3091 	ic->n_committed_sections = 0;  in replay_journal()
3093 	ic->uncommitted_section = continue_section;  in replay_journal()
3094 	ic->n_uncommitted_sections = 0;  in replay_journal()
3096 	ic->free_section = continue_section;  in replay_journal()
3097 	ic->free_section_entry = 0;  in replay_journal()
3098 	ic->free_sectors = ic->journal_entries;  in replay_journal()
3100 	ic->journal_tree_root = RB_ROOT;  in replay_journal()
3101 	for (i = 0; i < ic->journal_entries; i++)  in replay_journal()
3102 		init_journal_node(&ic->journal_tree[i]);  in replay_journal()
3105 static void dm_integrity_enter_synchronous_mode(struct dm_integrity_c *ic)  in dm_integrity_enter_synchronous_mode()  argument
3109 	if (ic->mode == 'B') {  in dm_integrity_enter_synchronous_mode()
3110 		ic->bitmap_flush_interval = msecs_to_jiffies(10) + 1;  in dm_integrity_enter_synchronous_mode()
3111 		ic->synchronous_mode = 1;  in dm_integrity_enter_synchronous_mode()
3113 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_enter_synchronous_mode()
3114 		queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in dm_integrity_enter_synchronous_mode()
3115 		flush_workqueue(ic->commit_wq);  in dm_integrity_enter_synchronous_mode()
3121 	struct dm_integrity_c *ic = container_of(n, struct dm_integrity_c, reboot_notifier);  in dm_integrity_reboot()  local
3125 	dm_integrity_enter_synchronous_mode(ic);  in dm_integrity_reboot()
3132 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_postsuspend()  local
3135 	WARN_ON(unregister_reboot_notifier(&ic->reboot_notifier));  in dm_integrity_postsuspend()
3137 	del_timer_sync(&ic->autocommit_timer);  in dm_integrity_postsuspend()
3139 	if (ic->recalc_wq)  in dm_integrity_postsuspend()
3140 		drain_workqueue(ic->recalc_wq);  in dm_integrity_postsuspend()
3142 	if (ic->mode == 'B')  in dm_integrity_postsuspend()
3143 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_postsuspend()
3145 	queue_work(ic->commit_wq, &ic->commit_work);  in dm_integrity_postsuspend()
3146 	drain_workqueue(ic->commit_wq);  in dm_integrity_postsuspend()
3148 	if (ic->mode == 'J') {  in dm_integrity_postsuspend()
3149 		queue_work(ic->writer_wq, &ic->writer_work);  in dm_integrity_postsuspend()
3150 		drain_workqueue(ic->writer_wq);  in dm_integrity_postsuspend()
3151 		dm_integrity_flush_buffers(ic, true);  in dm_integrity_postsuspend()
3152 		if (ic->wrote_to_journal) {  in dm_integrity_postsuspend()
3153 			init_journal(ic, ic->free_section,  in dm_integrity_postsuspend()
3154 				     ic->journal_sections - ic->free_section, ic->commit_seq);  in dm_integrity_postsuspend()
3155 			if (ic->free_section) {  in dm_integrity_postsuspend()
3156 				init_journal(ic, 0, ic->free_section,  in dm_integrity_postsuspend()
3157 					     next_commit_seq(ic->commit_seq));  in dm_integrity_postsuspend()
3162 	if (ic->mode == 'B') {  in dm_integrity_postsuspend()
3163 		dm_integrity_flush_buffers(ic, true);  in dm_integrity_postsuspend()
3166 		init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_postsuspend()
3167 		ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_postsuspend()
3168 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_postsuspend()
3170 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_postsuspend()
3174 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));  in dm_integrity_postsuspend()
3176 	ic->journal_uptodate = true;  in dm_integrity_postsuspend()
3181 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_resume()  local
3182 	__u64 old_provided_data_sectors = le64_to_cpu(ic->sb->provided_data_sectors);  in dm_integrity_resume()
3187 	ic->wrote_to_journal = false;  in dm_integrity_resume()
3189 	if (ic->provided_data_sectors != old_provided_data_sectors) {  in dm_integrity_resume()
3190 		if (ic->provided_data_sectors > old_provided_data_sectors &&  in dm_integrity_resume()
3191 		    ic->mode == 'B' &&  in dm_integrity_resume()
3192 		    ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit) {  in dm_integrity_resume()
3193 			rw_journal_sectors(ic, REQ_OP_READ, 0,  in dm_integrity_resume()
3194 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3195 			block_bitmap_op(ic, ic->journal, old_provided_data_sectors,  in dm_integrity_resume()
3196 					ic->provided_data_sectors - old_provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3197 			rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3198 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3201 		ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);  in dm_integrity_resume()
3202 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3204 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3207 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP)) {  in dm_integrity_resume()
3209 		rw_journal_sectors(ic, REQ_OP_READ, 0,  in dm_integrity_resume()
3210 				   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3211 		if (ic->mode == 'B') {  in dm_integrity_resume()
3212 			if (ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit &&  in dm_integrity_resume()
3213 			    !ic->reset_recalculate_flag) {  in dm_integrity_resume()
3214 				block_bitmap_copy(ic, ic->recalc_bitmap, ic->journal);  in dm_integrity_resume()
3215 				block_bitmap_copy(ic, ic->may_write_bitmap, ic->journal);  in dm_integrity_resume()
3216 				if (!block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors,  in dm_integrity_resume()
3218 					ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3219 					ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3223 					    ic->sb->log2_blocks_per_bitmap_bit, ic->log2_blocks_per_bitmap_bit);  in dm_integrity_resume()
3224 				ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;  in dm_integrity_resume()
3225 				block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3226 				block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3227 				block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3228 				rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3229 						   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3230 				ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3231 				ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3234 			if (!(ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit &&  in dm_integrity_resume()
3235 …	      block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_TEST_ALL_CLEAR)) ||  in dm_integrity_resume()
3236 			    ic->reset_recalculate_flag) {  in dm_integrity_resume()
3237 				ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3238 				ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3240 			init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_resume()
3241 			replay_journal(ic);  in dm_integrity_resume()
3242 			ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_resume()
3244 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3246 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3248 		replay_journal(ic);  in dm_integrity_resume()
3249 		if (ic->reset_recalculate_flag) {  in dm_integrity_resume()
3250 			ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3251 			ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3253 		if (ic->mode == 'B') {  in dm_integrity_resume()
3254 			ic->sb->flags |= cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_resume()
3255 			ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;  in dm_integrity_resume()
3256 			r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3258 				dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3260 			block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3261 			block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3262 			block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3263 			if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_resume()
3264 			    le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors) {  in dm_integrity_resume()
3265 				block_bitmap_op(ic, ic->journal, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3266 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3267 				block_bitmap_op(ic, ic->recalc_bitmap, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3268 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3269 				block_bitmap_op(ic, ic->may_write_bitmap, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3270 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3272 			rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3273 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3277 	DEBUG_print("testing recalc: %x\n", ic->sb->flags);  in dm_integrity_resume()
3278 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in dm_integrity_resume()
3279 		__u64 recalc_pos = le64_to_cpu(ic->sb->recalc_sector);  in dm_integrity_resume()
3281 		DEBUG_print("recalc pos: %llx / %llx\n", recalc_pos, ic->provided_data_sectors);  in dm_integrity_resume()
3282 		if (recalc_pos < ic->provided_data_sectors) {  in dm_integrity_resume()
3283 			queue_work(ic->recalc_wq, &ic->recalc_work);  in dm_integrity_resume()
3284 		} else if (recalc_pos > ic->provided_data_sectors) {  in dm_integrity_resume()
3285 			ic->sb->recalc_sector = cpu_to_le64(ic->provided_data_sectors);  in dm_integrity_resume()
3286 			recalc_write_super(ic);  in dm_integrity_resume()
3290 	ic->reboot_notifier.notifier_call = dm_integrity_reboot;  in dm_integrity_resume()
3291 	ic->reboot_notifier.next = NULL;  in dm_integrity_resume()
3292 	ic->reboot_notifier.priority = INT_MAX - 1;	/* be notified after md and before hardware drivers */  in dm_integrity_resume()
3293 	WARN_ON(register_reboot_notifier(&ic->reboot_notifier));  in dm_integrity_resume()
3297 	dm_integrity_enter_synchronous_mode(ic);  in dm_integrity_resume()
3304 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_status()  local
3311 			(unsigned long long)atomic64_read(&ic->number_of_mismatches),  in dm_integrity_status()
3312 			ic->provided_data_sectors);  in dm_integrity_status()
3313 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in dm_integrity_status()
3314 			DMEMIT(" %llu", le64_to_cpu(ic->sb->recalc_sector));  in dm_integrity_status()
3320 		__u64 watermark_percentage = (__u64)(ic->journal_entries - ic->free_sectors_threshold) * 100;  in dm_integrity_status()
3322 		watermark_percentage += ic->journal_entries / 2;  in dm_integrity_status()
3323 		do_div(watermark_percentage, ic->journal_entries);  in dm_integrity_status()
3325 		arg_count += !!ic->meta_dev;  in dm_integrity_status()
3326 		arg_count += ic->sectors_per_block != 1;  in dm_integrity_status()
3327 		arg_count += !!(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING));  in dm_integrity_status()
3328 		arg_count += ic->reset_recalculate_flag;  in dm_integrity_status()
3329 		arg_count += ic->discard;  in dm_integrity_status()
3330 		arg_count += ic->mode == 'J';  in dm_integrity_status()
3331 		arg_count += ic->mode == 'J';  in dm_integrity_status()
3332 		arg_count += ic->mode == 'B';  in dm_integrity_status()
3333 		arg_count += ic->mode == 'B';  in dm_integrity_status()
3334 		arg_count += !!ic->internal_hash_alg.alg_string;  in dm_integrity_status()
3335 		arg_count += !!ic->journal_crypt_alg.alg_string;  in dm_integrity_status()
3336 		arg_count += !!ic->journal_mac_alg.alg_string;  in dm_integrity_status()
3337 		arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0;  in dm_integrity_status()
3338 		arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0;  in dm_integrity_status()
3339 		arg_count += ic->legacy_recalculate;  in dm_integrity_status()
3340 		DMEMIT("%s %llu %u %c %u", ic->dev->name, ic->start,  in dm_integrity_status()
3341 		       ic->tag_size, ic->mode, arg_count);  in dm_integrity_status()
3342 		if (ic->meta_dev)  in dm_integrity_status()
3343 			DMEMIT(" meta_device:%s", ic->meta_dev->name);  in dm_integrity_status()
3344 		if (ic->sectors_per_block != 1)  in dm_integrity_status()
3345 			DMEMIT(" block_size:%u", ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_status()
3346 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in dm_integrity_status()
3348 		if (ic->reset_recalculate_flag)  in dm_integrity_status()
3350 		if (ic->discard)  in dm_integrity_status()
3352 		DMEMIT(" journal_sectors:%u", ic->initial_sectors - SB_SECTORS);  in dm_integrity_status()
3353 		DMEMIT(" interleave_sectors:%u", 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_status()
3354 		DMEMIT(" buffer_sectors:%u", 1U << ic->log2_buffer_sectors);  in dm_integrity_status()
3355 		if (ic->mode == 'J') {  in dm_integrity_status()
3357 			DMEMIT(" commit_time:%u", ic->autocommit_msec);  in dm_integrity_status()
3359 		if (ic->mode == 'B') {  in dm_integrity_status()
3360 …DMEMIT(" sectors_per_bit:%llu", (sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit);  in dm_integrity_status()
3361 			DMEMIT(" bitmap_flush_interval:%u", jiffies_to_msecs(ic->bitmap_flush_interval));  in dm_integrity_status()
3363 		if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0)  in dm_integrity_status()
3365 		if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0)  in dm_integrity_status()
3367 		if (ic->legacy_recalculate)  in dm_integrity_status()
3372 			if (ic->a.alg_string) {				\  in dm_integrity_status()
3373 				DMEMIT(" %s:%s", n, ic->a.alg_string);	\  in dm_integrity_status()
3374 				if (ic->a.key_string)			\  in dm_integrity_status()
3375 					DMEMIT(":%s", ic->a.key_string);\  in dm_integrity_status()
3386 			ic->dev->name, ic->start, ic->tag_size, ic->mode);  in dm_integrity_status()
3388 		if (ic->meta_dev)  in dm_integrity_status()
3389 			DMEMIT(",meta_device=%s", ic->meta_dev->name);  in dm_integrity_status()
3390 		if (ic->sectors_per_block != 1)  in dm_integrity_status()
3391 			DMEMIT(",block_size=%u", ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_status()
3393 		DMEMIT(",recalculate=%c", (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) ?  in dm_integrity_status()
3395 		DMEMIT(",allow_discards=%c", ic->discard ? 'y' : 'n');  in dm_integrity_status()
3397 		       ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0) ? 'y' : 'n');  in dm_integrity_status()
3399 		       ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0) ? 'y' : 'n');  in dm_integrity_status()
3400 		DMEMIT(",legacy_recalculate=%c", ic->legacy_recalculate ? 'y' : 'n');  in dm_integrity_status()
3402 		DMEMIT(",journal_sectors=%u", ic->initial_sectors - SB_SECTORS);  in dm_integrity_status()
3403 		DMEMIT(",interleave_sectors=%u", 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_status()
3404 		DMEMIT(",buffer_sectors=%u", 1U << ic->log2_buffer_sectors);  in dm_integrity_status()
3413 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_iterate_devices()  local
3415 	if (!ic->meta_dev)  in dm_integrity_iterate_devices()
3416 		return fn(ti, ic->dev, ic->start + ic->initial_sectors + ic->metadata_run, ti->len, data);  in dm_integrity_iterate_devices()
3418 		return fn(ti, ic->dev, 0, ti->len, data);  in dm_integrity_iterate_devices()
3423 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_io_hints()  local
3425 	if (ic->sectors_per_block > 1) {  in dm_integrity_io_hints()
3426 		limits->logical_block_size = ic->sectors_per_block << SECTOR_SHIFT;  in dm_integrity_io_hints()
3427 		limits->physical_block_size = ic->sectors_per_block << SECTOR_SHIFT;  in dm_integrity_io_hints()
3428 		blk_limits_io_min(limits, ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_io_hints()
3433 static void calculate_journal_section_size(struct dm_integrity_c *ic)  in calculate_journal_section_size()  argument
3437 	ic->journal_sections = le32_to_cpu(ic->sb->journal_sections);  in calculate_journal_section_size()
3438 …ic->journal_entry_size = roundup(offsetof(struct journal_entry, last_bytes[ic->sectors_per_block])…  in calculate_journal_section_size()
3441 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC))  in calculate_journal_section_size()
3443 	ic->journal_entries_per_sector = sector_space / ic->journal_entry_size;  in calculate_journal_section_size()
3444 	ic->journal_section_entries = ic->journal_entries_per_sector * JOURNAL_BLOCK_SECTORS;  in calculate_journal_section_size()
3445 …ic->journal_section_sectors = (ic->journal_section_entries << ic->sb->log2_sectors_per_block) + JO…  in calculate_journal_section_size()
3446 	ic->journal_entries = ic->journal_section_entries * ic->journal_sections;  in calculate_journal_section_size()
3449 static int calculate_device_limits(struct dm_integrity_c *ic)  in calculate_device_limits()  argument
3453 	calculate_journal_section_size(ic);  in calculate_device_limits()
3454 	initial_sectors = SB_SECTORS + (__u64)ic->journal_section_sectors * ic->journal_sections;  in calculate_device_limits()
3455 …if (initial_sectors + METADATA_PADDING_SECTORS >= ic->meta_device_sectors || initial_sectors > UIN…  in calculate_device_limits()
3457 	ic->initial_sectors = initial_sectors;  in calculate_device_limits()
3459 	if (!ic->meta_dev) {  in calculate_device_limits()
3464 			ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING) ?  in calculate_device_limits()
3468 …ic->metadata_run = round_up((__u64)ic->tag_size << (ic->sb->log2_interleave_sectors - ic->sb->log2…  in calculate_device_limits()
3470 		if (!(ic->metadata_run & (ic->metadata_run - 1)))  in calculate_device_limits()
3471 			ic->log2_metadata_run = __ffs(ic->metadata_run);  in calculate_device_limits()
3473 			ic->log2_metadata_run = -1;  in calculate_device_limits()
3475 		get_area_and_offset(ic, ic->provided_data_sectors - 1, &last_area, &last_offset);  in calculate_device_limits()
3476 		last_sector = get_data_sector(ic, last_area, last_offset);  in calculate_device_limits()
3477 		if (last_sector < ic->start || last_sector >= ic->meta_device_sectors)  in calculate_device_limits()
3480 		__u64 meta_size = (ic->provided_data_sectors >> ic->sb->log2_sectors_per_block) * ic->tag_size;  in calculate_device_limits()
3482 		meta_size = (meta_size + ((1U << (ic->log2_buffer_sectors + SECTOR_SHIFT)) - 1))  in calculate_device_limits()
3483 				>> (ic->log2_buffer_sectors + SECTOR_SHIFT);  in calculate_device_limits()
3484 		meta_size <<= ic->log2_buffer_sectors;  in calculate_device_limits()
3485 		if (ic->initial_sectors + meta_size < ic->initial_sectors ||  in calculate_device_limits()
3486 		    ic->initial_sectors + meta_size > ic->meta_device_sectors)  in calculate_device_limits()
3488 		ic->metadata_run = 1;  in calculate_device_limits()
3489 		ic->log2_metadata_run = 0;  in calculate_device_limits()
3495 static void get_provided_data_sectors(struct dm_integrity_c *ic)  in get_provided_data_sectors()  argument
3497 	if (!ic->meta_dev) {  in get_provided_data_sectors()
3500 		ic->provided_data_sectors = 0;  in get_provided_data_sectors()
3501 		for (test_bit = fls64(ic->meta_device_sectors) - 1; test_bit >= 3; test_bit--) {  in get_provided_data_sectors()
3502 			__u64 prev_data_sectors = ic->provided_data_sectors;  in get_provided_data_sectors()
3504 			ic->provided_data_sectors |= (sector_t)1 << test_bit;  in get_provided_data_sectors()
3505 			if (calculate_device_limits(ic))  in get_provided_data_sectors()
3506 				ic->provided_data_sectors = prev_data_sectors;  in get_provided_data_sectors()
3509 		ic->provided_data_sectors = ic->data_device_sectors;  in get_provided_data_sectors()
3510 		ic->provided_data_sectors &= ~(sector_t)(ic->sectors_per_block - 1);  in get_provided_data_sectors()
3514 static int initialize_superblock(struct dm_integrity_c *ic,  in initialize_superblock()  argument
3520 	memset(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT);  in initialize_superblock()
3521 	memcpy(ic->sb->magic, SB_MAGIC, 8);  in initialize_superblock()
3522 	ic->sb->integrity_tag_size = cpu_to_le16(ic->tag_size);  in initialize_superblock()
3523 	ic->sb->log2_sectors_per_block = __ffs(ic->sectors_per_block);  in initialize_superblock()
3524 	if (ic->journal_mac_alg.alg_string)  in initialize_superblock()
3525 		ic->sb->flags |= cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC);  in initialize_superblock()
3527 	calculate_journal_section_size(ic);  in initialize_superblock()
3528 	journal_sections = journal_sectors / ic->journal_section_sectors;  in initialize_superblock()
3532 	if (ic->fix_hmac && (ic->internal_hash_alg.alg_string || ic->journal_mac_alg.alg_string)) {  in initialize_superblock()
3533 		ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_HMAC);  in initialize_superblock()
3534 		get_random_bytes(ic->sb->salt, SALT_SIZE);  in initialize_superblock()
3537 	if (!ic->meta_dev) {  in initialize_superblock()
3538 		if (ic->fix_padding)  in initialize_superblock()
3539 			ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_PADDING);  in initialize_superblock()
3540 		ic->sb->journal_sections = cpu_to_le32(journal_sections);  in initialize_superblock()
3543 		ic->sb->log2_interleave_sectors = __fls(interleave_sectors);  in initialize_superblock()
3544 …ic->sb->log2_interleave_sectors = max_t(__u8, MIN_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave…  in initialize_superblock()
3545 …ic->sb->log2_interleave_sectors = min_t(__u8, MAX_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave…  in initialize_superblock()
3547 		get_provided_data_sectors(ic);  in initialize_superblock()
3548 		if (!ic->provided_data_sectors)  in initialize_superblock()
3551 		ic->sb->log2_interleave_sectors = 0;  in initialize_superblock()
3553 		get_provided_data_sectors(ic);  in initialize_superblock()
3554 		if (!ic->provided_data_sectors)  in initialize_superblock()
3558 		ic->sb->journal_sections = cpu_to_le32(0);  in initialize_superblock()
3560 			__u32 prev_journal_sections = le32_to_cpu(ic->sb->journal_sections);  in initialize_superblock()
3565 			ic->sb->journal_sections = cpu_to_le32(test_journal_sections);  in initialize_superblock()
3566 			if (calculate_device_limits(ic))  in initialize_superblock()
3567 				ic->sb->journal_sections = cpu_to_le32(prev_journal_sections);  in initialize_superblock()
3570 		if (!le32_to_cpu(ic->sb->journal_sections)) {  in initialize_superblock()
3571 			if (ic->log2_buffer_sectors > 3) {  in initialize_superblock()
3572 				ic->log2_buffer_sectors--;  in initialize_superblock()
3579 	ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);  in initialize_superblock()
3581 	sb_set_version(ic);  in initialize_superblock()
3586 static void dm_integrity_set(struct dm_target *ti, struct dm_integrity_c *ic)  in dm_integrity_set()  argument
3593 	bi.tuple_size = ic->tag_size;  in dm_integrity_set()
3595 	bi.interval_exp = ic->sb->log2_sectors_per_block + SECTOR_SHIFT;  in dm_integrity_set()
3636 static void dm_integrity_free_journal_scatterlist(struct dm_integrity_c *ic, struct scatterlist **s…  in dm_integrity_free_journal_scatterlist()  argument
3640 	for (i = 0; i < ic->journal_sections; i++)  in dm_integrity_free_journal_scatterlist()
3645 static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_integrity_c *ic,  in dm_integrity_alloc_journal_scatterlist()  argument
3651 	sl = kvmalloc_array(ic->journal_sections,  in dm_integrity_alloc_journal_scatterlist()
3657 	for (i = 0; i < ic->journal_sections; i++) {  in dm_integrity_alloc_journal_scatterlist()
3664 		page_list_location(ic, i, 0, &start_index, &start_offset);  in dm_integrity_alloc_journal_scatterlist()
3665 		page_list_location(ic, i, ic->journal_section_sectors - 1,  in dm_integrity_alloc_journal_scatterlist()
3673 			dm_integrity_free_journal_scatterlist(ic, sl);  in dm_integrity_alloc_journal_scatterlist()
3765 static int create_journal(struct dm_integrity_c *ic, char **error)  in create_journal()  argument
3773 	ic->commit_ids[0] = cpu_to_le64(0x1111111111111111ULL);  in create_journal()
3774 	ic->commit_ids[1] = cpu_to_le64(0x2222222222222222ULL);  in create_journal()
3775 	ic->commit_ids[2] = cpu_to_le64(0x3333333333333333ULL);  in create_journal()
3776 	ic->commit_ids[3] = cpu_to_le64(0x4444444444444444ULL);  in create_journal()
3778 	journal_pages = roundup((__u64)ic->journal_sections * ic->journal_section_sectors,  in create_journal()
3786 	ic->journal_pages = journal_pages;  in create_journal()
3788 	ic->journal = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3789 	if (!ic->journal) {  in create_journal()
3794 	if (ic->journal_crypt_alg.alg_string) {  in create_journal()
3798 		comp.ic = ic;  in create_journal()
3799 …ic->journal_crypt = crypto_alloc_skcipher(ic->journal_crypt_alg.alg_string, 0, CRYPTO_ALG_ALLOCATE…  in create_journal()
3800 		if (IS_ERR(ic->journal_crypt)) {  in create_journal()
3802 			r = PTR_ERR(ic->journal_crypt);  in create_journal()
3803 			ic->journal_crypt = NULL;  in create_journal()
3806 		ivsize = crypto_skcipher_ivsize(ic->journal_crypt);  in create_journal()
3807 		blocksize = crypto_skcipher_blocksize(ic->journal_crypt);  in create_journal()
3809 		if (ic->journal_crypt_alg.key) {  in create_journal()
3810 			r = crypto_skcipher_setkey(ic->journal_crypt, ic->journal_crypt_alg.key,  in create_journal()
3811 						   ic->journal_crypt_alg.key_size);  in create_journal()
3818 			    ic->journal_crypt_alg.alg_string, blocksize, ivsize);  in create_journal()
3820 		ic->journal_io = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3821 		if (!ic->journal_io) {  in create_journal()
3830 			req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3844 			ic->journal_xor = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3845 			if (!ic->journal_xor) {  in create_journal()
3851 			sg = kvmalloc_array(ic->journal_pages + 1,  in create_journal()
3859 			sg_init_table(sg, ic->journal_pages + 1);  in create_journal()
3860 			for (i = 0; i < ic->journal_pages; i++) {  in create_journal()
3861 				char *va = lowmem_page_address(ic->journal_xor[i].page);  in create_journal()
3866 			sg_set_buf(&sg[i], &ic->commit_ids, sizeof(ic->commit_ids));  in create_journal()
3869 						   PAGE_SIZE * ic->journal_pages + sizeof(ic->commit_ids), crypt_iv);  in create_journal()
3875 			r = dm_integrity_failed(ic);  in create_journal()
3880 			DEBUG_bytes(lowmem_page_address(ic->journal_xor[0].page), 64, "xor data");  in create_journal()
3882 			crypto_free_skcipher(ic->journal_crypt);  in create_journal()
3883 			ic->journal_crypt = NULL;  in create_journal()
3887 			req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3908 			ic->journal_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal);  in create_journal()
3909 			if (!ic->journal_scatterlist) {  in create_journal()
3914 			ic->journal_io_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal_io);  in create_journal()
3915 			if (!ic->journal_io_scatterlist) {  in create_journal()
3920 			ic->sk_requests = kvmalloc_array(ic->journal_sections,  in create_journal()
3923 			if (!ic->sk_requests) {  in create_journal()
3928 			for (i = 0; i < ic->journal_sections; i++) {  in create_journal()
3944 				r = dm_integrity_failed(ic);  in create_journal()
3950 				section_req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3965 				section_req->cryptlen = (size_t)ic->journal_section_sectors << SECTOR_SHIFT;  in create_journal()
3966 				ic->sk_requests[i] = section_req;  in create_journal()
3977 			if (ic->commit_ids[j] == ic->commit_ids[i]) {  in create_journal()
3978 				ic->commit_ids[i] = cpu_to_le64(le64_to_cpu(ic->commit_ids[i]) + 1);  in create_journal()
3982 		DEBUG_print("commit id %u: %016llx\n", i, ic->commit_ids[i]);  in create_journal()
3985 	journal_tree_size = (__u64)ic->journal_entries * sizeof(struct journal_node);  in create_journal()
3991 	ic->journal_tree = kvmalloc(journal_tree_size, GFP_KERNEL);  in create_journal()
3992 	if (!ic->journal_tree) {  in create_journal()
4030 	struct dm_integrity_c *ic;  in dm_integrity_ctr()  local
4054 	ic = kzalloc(sizeof(struct dm_integrity_c), GFP_KERNEL);  in dm_integrity_ctr()
4055 	if (!ic) {  in dm_integrity_ctr()
4059 	ti->private = ic;  in dm_integrity_ctr()
4061 	ic->ti = ti;  in dm_integrity_ctr()
4063 	ic->in_progress = RB_ROOT;  in dm_integrity_ctr()
4064 	INIT_LIST_HEAD(&ic->wait_list);  in dm_integrity_ctr()
4065 	init_waitqueue_head(&ic->endio_wait);  in dm_integrity_ctr()
4066 	bio_list_init(&ic->flush_bio_list);  in dm_integrity_ctr()
4067 	init_waitqueue_head(&ic->copy_to_journal_wait);  in dm_integrity_ctr()
4068 	init_completion(&ic->crypto_backoff);  in dm_integrity_ctr()
4069 	atomic64_set(&ic->number_of_mismatches, 0);  in dm_integrity_ctr()
4070 	ic->bitmap_flush_interval = BITMAP_FLUSH_INTERVAL;  in dm_integrity_ctr()
4072 	r = dm_get_device(ti, argv[0], dm_table_get_mode(ti->table), &ic->dev);  in dm_integrity_ctr()
4083 	ic->start = start;  in dm_integrity_ctr()
4086 		if (sscanf(argv[2], "%u%c", &ic->tag_size, &dummy) != 1 || !ic->tag_size) {  in dm_integrity_ctr()
4095 		ic->mode = argv[3][0];  in dm_integrity_ctr()
4107 	ic->sectors_per_block = 1;  in dm_integrity_ctr()
4137 			if (ic->meta_dev) {  in dm_integrity_ctr()
4138 				dm_put_device(ti, ic->meta_dev);  in dm_integrity_ctr()
4139 				ic->meta_dev = NULL;  in dm_integrity_ctr()
4142 					  dm_table_get_mode(ti->table), &ic->meta_dev);  in dm_integrity_ctr()
4155 			ic->sectors_per_block = val >> SECTOR_SHIFT;  in dm_integrity_ctr()
4164 			ic->bitmap_flush_interval = msecs_to_jiffies(val);  in dm_integrity_ctr()
4166 			r = get_alg_and_key(opt_string, &ic->internal_hash_alg, &ti->error,  in dm_integrity_ctr()
4171 			r = get_alg_and_key(opt_string, &ic->journal_crypt_alg, &ti->error,  in dm_integrity_ctr()
4176 			r = get_alg_and_key(opt_string, &ic->journal_mac_alg, &ti->error,  in dm_integrity_ctr()
4181 			ic->recalculate_flag = true;  in dm_integrity_ctr()
4183 			ic->recalculate_flag = true;  in dm_integrity_ctr()
4184 			ic->reset_recalculate_flag = true;  in dm_integrity_ctr()
4186 			ic->discard = true;  in dm_integrity_ctr()
4188 			ic->fix_padding = true;  in dm_integrity_ctr()
4190 			ic->fix_hmac = true;  in dm_integrity_ctr()
4192 			ic->legacy_recalculate = true;  in dm_integrity_ctr()
4200 	ic->data_device_sectors = bdev_nr_sectors(ic->dev->bdev);  in dm_integrity_ctr()
4201 	if (!ic->meta_dev)  in dm_integrity_ctr()
4202 		ic->meta_device_sectors = ic->data_device_sectors;  in dm_integrity_ctr()
4204 		ic->meta_device_sectors = bdev_nr_sectors(ic->meta_dev->bdev);  in dm_integrity_ctr()
4208 				      ic->data_device_sectors >> DEFAULT_JOURNAL_SIZE_FACTOR);  in dm_integrity_ctr()
4213 	ic->log2_buffer_sectors = min((int)__fls(buffer_sectors), 31 - SECTOR_SHIFT);  in dm_integrity_ctr()
4215 	r = get_mac(&ic->internal_hash, &ic->internal_hash_alg, &ti->error,  in dm_integrity_ctr()
4220 	r = get_mac(&ic->journal_mac, &ic->journal_mac_alg, &ti->error,  in dm_integrity_ctr()
4225 	if (!ic->tag_size) {  in dm_integrity_ctr()
4226 		if (!ic->internal_hash) {  in dm_integrity_ctr()
4231 		ic->tag_size = crypto_shash_digestsize(ic->internal_hash);  in dm_integrity_ctr()
4233 	if (ic->tag_size > MAX_TAG_SIZE) {  in dm_integrity_ctr()
4238 	if (!(ic->tag_size & (ic->tag_size - 1)))  in dm_integrity_ctr()
4239 		ic->log2_tag_size = __ffs(ic->tag_size);  in dm_integrity_ctr()
4241 		ic->log2_tag_size = -1;  in dm_integrity_ctr()
4243 	if (ic->mode == 'B' && !ic->internal_hash) {  in dm_integrity_ctr()
4249 	if (ic->discard && !ic->internal_hash) {  in dm_integrity_ctr()
4255 	ic->autocommit_jiffies = msecs_to_jiffies(sync_msec);  in dm_integrity_ctr()
4256 	ic->autocommit_msec = sync_msec;  in dm_integrity_ctr()
4257 	timer_setup(&ic->autocommit_timer, autocommit_fn, 0);  in dm_integrity_ctr()
4259 	ic->io = dm_io_client_create();  in dm_integrity_ctr()
4260 	if (IS_ERR(ic->io)) {  in dm_integrity_ctr()
4261 		r = PTR_ERR(ic->io);  in dm_integrity_ctr()
4262 		ic->io = NULL;  in dm_integrity_ctr()
4267 	r = mempool_init_slab_pool(&ic->journal_io_mempool, JOURNAL_IO_MEMPOOL, journal_io_cache);  in dm_integrity_ctr()
4273 	ic->metadata_wq = alloc_workqueue("dm-integrity-metadata",  in dm_integrity_ctr()
4275 	if (!ic->metadata_wq) {  in dm_integrity_ctr()
4285 	ic->wait_wq = alloc_ordered_workqueue("dm-integrity-wait", WQ_MEM_RECLAIM);  in dm_integrity_ctr()
4286 	if (!ic->wait_wq) {  in dm_integrity_ctr()
4292 	ic->offload_wq = alloc_workqueue("dm-integrity-offload", WQ_MEM_RECLAIM,  in dm_integrity_ctr()
4294 	if (!ic->offload_wq) {  in dm_integrity_ctr()
4300 	ic->commit_wq = alloc_workqueue("dm-integrity-commit", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4301 	if (!ic->commit_wq) {  in dm_integrity_ctr()
4306 	INIT_WORK(&ic->commit_work, integrity_commit);  in dm_integrity_ctr()
4308 	if (ic->mode == 'J' || ic->mode == 'B') {  in dm_integrity_ctr()
4309 		ic->writer_wq = alloc_workqueue("dm-integrity-writer", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4310 		if (!ic->writer_wq) {  in dm_integrity_ctr()
4315 		INIT_WORK(&ic->writer_work, integrity_writer);  in dm_integrity_ctr()
4318 	ic->sb = alloc_pages_exact(SB_SECTORS << SECTOR_SHIFT, GFP_KERNEL);  in dm_integrity_ctr()
4319 	if (!ic->sb) {  in dm_integrity_ctr()
4325 	r = sync_rw_sb(ic, REQ_OP_READ);  in dm_integrity_ctr()
4331 	if (memcmp(ic->sb->magic, SB_MAGIC, 8)) {  in dm_integrity_ctr()
4332 		if (ic->mode != 'R') {  in dm_integrity_ctr()
4333 			if (memchr_inv(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT)) {  in dm_integrity_ctr()
4340 		r = initialize_superblock(ic, journal_sectors, interleave_sectors);  in dm_integrity_ctr()
4345 		if (ic->mode != 'R')  in dm_integrity_ctr()
4349 	if (!ic->sb->version || ic->sb->version > SB_VERSION_5) {  in dm_integrity_ctr()
4354 	if (le16_to_cpu(ic->sb->integrity_tag_size) != ic->tag_size) {  in dm_integrity_ctr()
4359 	if (ic->sb->log2_sectors_per_block != __ffs(ic->sectors_per_block)) {  in dm_integrity_ctr()
4364 	if (!le32_to_cpu(ic->sb->journal_sections)) {  in dm_integrity_ctr()
4370 	if (!ic->meta_dev) {  in dm_integrity_ctr()
4371 		if (ic->sb->log2_interleave_sectors < MIN_LOG2_INTERLEAVE_SECTORS ||  in dm_integrity_ctr()
4372 		    ic->sb->log2_interleave_sectors > MAX_LOG2_INTERLEAVE_SECTORS) {  in dm_integrity_ctr()
4378 		if (ic->sb->log2_interleave_sectors) {  in dm_integrity_ctr()
4384 …if (!!(ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC)) != !!ic->journal_mac_alg.alg_string)…  in dm_integrity_ctr()
4390 	get_provided_data_sectors(ic);  in dm_integrity_ctr()
4391 	if (!ic->provided_data_sectors) {  in dm_integrity_ctr()
4398 	r = calculate_device_limits(ic);  in dm_integrity_ctr()
4400 		if (ic->meta_dev) {  in dm_integrity_ctr()
4401 			if (ic->log2_buffer_sectors > 3) {  in dm_integrity_ctr()
4402 				ic->log2_buffer_sectors--;  in dm_integrity_ctr()
4412 	if (log2_sectors_per_bitmap_bit < ic->sb->log2_sectors_per_block)  in dm_integrity_ctr()
4413 		log2_sectors_per_bitmap_bit = ic->sb->log2_sectors_per_block;  in dm_integrity_ctr()
4415 …bits_in_journal = ((__u64)ic->journal_section_sectors * ic->journal_sections) << (SECTOR_SHIFT + 3…  in dm_integrity_ctr()
4418 …while (bits_in_journal < (ic->provided_data_sectors + ((sector_t)1 << log2_sectors_per_bitmap_bit)…  in dm_integrity_ctr()
4421 	log2_blocks_per_bitmap_bit = log2_sectors_per_bitmap_bit - ic->sb->log2_sectors_per_block;  in dm_integrity_ctr()
4422 	ic->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit;  in dm_integrity_ctr()
4424 		ic->sb->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit;  in dm_integrity_ctr()
4426 	n_bitmap_bits = ((ic->provided_data_sectors >> ic->sb->log2_sectors_per_block)  in dm_integrity_ctr()
4428 	ic->n_bitmap_blocks = DIV_ROUND_UP(n_bitmap_bits, BITMAP_BLOCK_SIZE * 8);  in dm_integrity_ctr()
4430 	if (!ic->meta_dev)  in dm_integrity_ctr()
4431 		ic->log2_buffer_sectors = min(ic->log2_buffer_sectors, (__u8)__ffs(ic->metadata_run));  in dm_integrity_ctr()
4433 	if (ti->len > ic->provided_data_sectors) {  in dm_integrity_ctr()
4440 	threshold = (__u64)ic->journal_entries * (100 - journal_watermark);  in dm_integrity_ctr()
4443 	ic->free_sectors_threshold = threshold;  in dm_integrity_ctr()
4446 	DEBUG_print("	integrity_tag_size %u\n", le16_to_cpu(ic->sb->integrity_tag_size));  in dm_integrity_ctr()
4447 	DEBUG_print("	journal_entry_size %u\n", ic->journal_entry_size);  in dm_integrity_ctr()
4448 	DEBUG_print("	journal_entries_per_sector %u\n", ic->journal_entries_per_sector);  in dm_integrity_ctr()
4449 	DEBUG_print("	journal_section_entries %u\n", ic->journal_section_entries);  in dm_integrity_ctr()
4450 	DEBUG_print("	journal_section_sectors %u\n", ic->journal_section_sectors);  in dm_integrity_ctr()
4451 	DEBUG_print("	journal_sections %u\n", (unsigned int)le32_to_cpu(ic->sb->journal_sections));  in dm_integrity_ctr()
4452 	DEBUG_print("	journal_entries %u\n", ic->journal_entries);  in dm_integrity_ctr()
4453 	DEBUG_print("	log2_interleave_sectors %d\n", ic->sb->log2_interleave_sectors);  in dm_integrity_ctr()
4454 	DEBUG_print("	data_device_sectors 0x%llx\n", bdev_nr_sectors(ic->dev->bdev));  in dm_integrity_ctr()
4455 	DEBUG_print("	initial_sectors 0x%x\n", ic->initial_sectors);  in dm_integrity_ctr()
4456 	DEBUG_print("	metadata_run 0x%x\n", ic->metadata_run);  in dm_integrity_ctr()
4457 	DEBUG_print("	log2_metadata_run %d\n", ic->log2_metadata_run);  in dm_integrity_ctr()
4458 …DEBUG_print("	provided_data_sectors 0x%llx (%llu)\n", ic->provided_data_sectors, ic->provided_data…  in dm_integrity_ctr()
4459 	DEBUG_print("	log2_buffer_sectors %u\n", ic->log2_buffer_sectors);  in dm_integrity_ctr()
4462 	if (ic->recalculate_flag && !(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))) {  in dm_integrity_ctr()
4463 		ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_ctr()
4464 		ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_ctr()
4467 	if (ic->internal_hash) {  in dm_integrity_ctr()
4468 		ic->recalc_wq = alloc_workqueue("dm-integrity-recalc", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4469 		if (!ic->recalc_wq) {  in dm_integrity_ctr()
4474 		INIT_WORK(&ic->recalc_work, integrity_recalc);  in dm_integrity_ctr()
4476 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in dm_integrity_ctr()
4483 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_ctr()
4484 	    le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors &&  in dm_integrity_ctr()
4485 	    dm_integrity_disable_recalculate(ic)) {  in dm_integrity_ctr()
4491 	ic->bufio = dm_bufio_client_create(ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev,  in dm_integrity_ctr()
4492 			1U << (SECTOR_SHIFT + ic->log2_buffer_sectors), 1, 0, NULL, NULL, 0);  in dm_integrity_ctr()
4493 	if (IS_ERR(ic->bufio)) {  in dm_integrity_ctr()
4494 		r = PTR_ERR(ic->bufio);  in dm_integrity_ctr()
4496 		ic->bufio = NULL;  in dm_integrity_ctr()
4499 	dm_bufio_set_sector_offset(ic->bufio, ic->start + ic->initial_sectors);  in dm_integrity_ctr()
4501 	if (ic->mode != 'R') {  in dm_integrity_ctr()
4502 		r = create_journal(ic, &ti->error);  in dm_integrity_ctr()
4508 	if (ic->mode == 'B') {  in dm_integrity_ctr()
4510 		unsigned int n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE);  in dm_integrity_ctr()
4512 		ic->recalc_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages);  in dm_integrity_ctr()
4513 		if (!ic->recalc_bitmap) {  in dm_integrity_ctr()
4517 		ic->may_write_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages);  in dm_integrity_ctr()
4518 		if (!ic->may_write_bitmap) {  in dm_integrity_ctr()
4522 		ic->bbs = kvmalloc_array(ic->n_bitmap_blocks, sizeof(struct bitmap_block_status), GFP_KERNEL);  in dm_integrity_ctr()
4523 		if (!ic->bbs) {  in dm_integrity_ctr()
4527 		INIT_DELAYED_WORK(&ic->bitmap_flush_work, bitmap_flush_work);  in dm_integrity_ctr()
4528 		for (i = 0; i < ic->n_bitmap_blocks; i++) {  in dm_integrity_ctr()
4529 			struct bitmap_block_status *bbs = &ic->bbs[i];  in dm_integrity_ctr()
4533 			bbs->ic = ic;  in dm_integrity_ctr()
4542 			bbs->bitmap = lowmem_page_address(ic->journal[pl_index].page) + pl_offset;  in dm_integrity_ctr()
4547 		init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_ctr()
4548 		r = dm_integrity_failed(ic);  in dm_integrity_ctr()
4553 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_ctr()
4558 		ic->just_formatted = true;  in dm_integrity_ctr()
4561 	if (!ic->meta_dev) {  in dm_integrity_ctr()
4562 		r = dm_set_target_max_io_len(ti, 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_ctr()
4566 	if (ic->mode == 'B') {  in dm_integrity_ctr()
4569 …max_io_len = ((sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit) * (BITMAP_BLOCK_S…  in dm_integrity_ctr()
4580 	if (!ic->internal_hash)  in dm_integrity_ctr()
4581 		dm_integrity_set(ti, ic);  in dm_integrity_ctr()
4585 	if (ic->discard)  in dm_integrity_ctr()
4599 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_dtr()  local
4601 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));  in dm_integrity_dtr()
4602 	BUG_ON(!list_empty(&ic->wait_list));  in dm_integrity_dtr()
4604 	if (ic->mode == 'B')  in dm_integrity_dtr()
4605 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_dtr()
4606 	if (ic->metadata_wq)  in dm_integrity_dtr()
4607 		destroy_workqueue(ic->metadata_wq);  in dm_integrity_dtr()
4608 	if (ic->wait_wq)  in dm_integrity_dtr()
4609 		destroy_workqueue(ic->wait_wq);  in dm_integrity_dtr()
4610 	if (ic->offload_wq)  in dm_integrity_dtr()
4611 		destroy_workqueue(ic->offload_wq);  in dm_integrity_dtr()
4612 	if (ic->commit_wq)  in dm_integrity_dtr()
4613 		destroy_workqueue(ic->commit_wq);  in dm_integrity_dtr()
4614 	if (ic->writer_wq)  in dm_integrity_dtr()
4615 		destroy_workqueue(ic->writer_wq);  in dm_integrity_dtr()
4616 	if (ic->recalc_wq)  in dm_integrity_dtr()
4617 		destroy_workqueue(ic->recalc_wq);  in dm_integrity_dtr()
4618 	kvfree(ic->bbs);  in dm_integrity_dtr()
4619 	if (ic->bufio)  in dm_integrity_dtr()
4620 		dm_bufio_client_destroy(ic->bufio);  in dm_integrity_dtr()
4621 	mempool_exit(&ic->journal_io_mempool);  in dm_integrity_dtr()
4622 	if (ic->io)  in dm_integrity_dtr()
4623 		dm_io_client_destroy(ic->io);  in dm_integrity_dtr()
4624 	if (ic->dev)  in dm_integrity_dtr()
4625 		dm_put_device(ti, ic->dev);  in dm_integrity_dtr()
4626 	if (ic->meta_dev)  in dm_integrity_dtr()
4627 		dm_put_device(ti, ic->meta_dev);  in dm_integrity_dtr()
4628 	dm_integrity_free_page_list(ic->journal);  in dm_integrity_dtr()
4629 	dm_integrity_free_page_list(ic->journal_io);  in dm_integrity_dtr()
4630 	dm_integrity_free_page_list(ic->journal_xor);  in dm_integrity_dtr()
4631 	dm_integrity_free_page_list(ic->recalc_bitmap);  in dm_integrity_dtr()
4632 	dm_integrity_free_page_list(ic->may_write_bitmap);  in dm_integrity_dtr()
4633 	if (ic->journal_scatterlist)  in dm_integrity_dtr()
4634 		dm_integrity_free_journal_scatterlist(ic, ic->journal_scatterlist);  in dm_integrity_dtr()
4635 	if (ic->journal_io_scatterlist)  in dm_integrity_dtr()
4636 		dm_integrity_free_journal_scatterlist(ic, ic->journal_io_scatterlist);  in dm_integrity_dtr()
4637 	if (ic->sk_requests) {  in dm_integrity_dtr()
4640 		for (i = 0; i < ic->journal_sections; i++) {  in dm_integrity_dtr()
4643 			req = ic->sk_requests[i];  in dm_integrity_dtr()
4649 		kvfree(ic->sk_requests);  in dm_integrity_dtr()
4651 	kvfree(ic->journal_tree);  in dm_integrity_dtr()
4652 	if (ic->sb)  in dm_integrity_dtr()
4653 		free_pages_exact(ic->sb, SB_SECTORS << SECTOR_SHIFT);  in dm_integrity_dtr()
4655 	if (ic->internal_hash)  in dm_integrity_dtr()
4656 		crypto_free_shash(ic->internal_hash);  in dm_integrity_dtr()
4657 	free_alg(&ic->internal_hash_alg);  in dm_integrity_dtr()
4659 	if (ic->journal_crypt)  in dm_integrity_dtr()
4660 		crypto_free_skcipher(ic->journal_crypt);  in dm_integrity_dtr()
4661 	free_alg(&ic->journal_crypt_alg);  in dm_integrity_dtr()
4663 	if (ic->journal_mac)  in dm_integrity_dtr()
4664 		crypto_free_shash(ic->journal_mac);  in dm_integrity_dtr()
4665 	free_alg(&ic->journal_mac_alg);  in dm_integrity_dtr()
4667 	kfree(ic);  in dm_integrity_dtr()