106 #define journal_entry_tag(ic, je)		((__u8 *)&(je)->last_bytes[(ic)->sectors_per_block])  argument
301 	struct dm_integrity_c *ic;  member
319 	struct dm_integrity_c *ic;  member
331 	struct dm_integrity_c *ic;  member
389 static void dm_integrity_io_error(struct dm_integrity_c *ic, const char *msg, int err)  in dm_integrity_io_error()  argument
392 		atomic64_inc(&ic->number_of_mismatches);  in dm_integrity_io_error()
393 	if (!cmpxchg(&ic->failed, 0, err))  in dm_integrity_io_error()
397 static int dm_integrity_failed(struct dm_integrity_c *ic)  in dm_integrity_failed()  argument
399 	return READ_ONCE(ic->failed);  in dm_integrity_failed()
402 static bool dm_integrity_disable_recalculate(struct dm_integrity_c *ic)  in dm_integrity_disable_recalculate()  argument
404 	if (ic->legacy_recalculate)  in dm_integrity_disable_recalculate()
406 	if (!(ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) ?  in dm_integrity_disable_recalculate()
407 	    ic->internal_hash_alg.key || ic->journal_mac_alg.key :  in dm_integrity_disable_recalculate()
408 	    ic->internal_hash_alg.key && !ic->journal_mac_alg.key)  in dm_integrity_disable_recalculate()
413 static commit_id_t dm_integrity_commit_id(struct dm_integrity_c *ic, unsigned i,  in dm_integrity_commit_id()  argument
420 	return ic->commit_ids[seq] ^ cpu_to_le64(((__u64)i << 32) ^ j);  in dm_integrity_commit_id()
423 static void get_area_and_offset(struct dm_integrity_c *ic, sector_t data_sector,  in get_area_and_offset()  argument
426 	if (!ic->meta_dev) {  in get_area_and_offset()
427 		__u8 log2_interleave_sectors = ic->sb->log2_interleave_sectors;  in get_area_and_offset()
436 #define sector_to_block(ic, n)						\  argument
438 	BUG_ON((n) & (unsigned)((ic)->sectors_per_block - 1));		\
439 	(n) >>= (ic)->sb->log2_sectors_per_block;			\
442 static __u64 get_metadata_sector_and_offset(struct dm_integrity_c *ic, sector_t area,  in get_metadata_sector_and_offset()  argument
448 	ms = area << ic->sb->log2_interleave_sectors;  in get_metadata_sector_and_offset()
449 	if (likely(ic->log2_metadata_run >= 0))  in get_metadata_sector_and_offset()
450 		ms += area << ic->log2_metadata_run;  in get_metadata_sector_and_offset()
452 		ms += area * ic->metadata_run;  in get_metadata_sector_and_offset()
453 	ms >>= ic->log2_buffer_sectors;  in get_metadata_sector_and_offset()
455 	sector_to_block(ic, offset);  in get_metadata_sector_and_offset()
457 	if (likely(ic->log2_tag_size >= 0)) {  in get_metadata_sector_and_offset()
458 		ms += offset >> (SECTOR_SHIFT + ic->log2_buffer_sectors - ic->log2_tag_size);  in get_metadata_sector_and_offset()
459 		mo = (offset << ic->log2_tag_size) & ((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - 1);  in get_metadata_sector_and_offset()
461 		ms += (__u64)offset * ic->tag_size >> (SECTOR_SHIFT + ic->log2_buffer_sectors);  in get_metadata_sector_and_offset()
462 		mo = (offset * ic->tag_size) & ((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - 1);  in get_metadata_sector_and_offset()
468 static sector_t get_data_sector(struct dm_integrity_c *ic, sector_t area, sector_t offset)  in get_data_sector()  argument
472 	if (ic->meta_dev)  in get_data_sector()
475 	result = area << ic->sb->log2_interleave_sectors;  in get_data_sector()
476 	if (likely(ic->log2_metadata_run >= 0))  in get_data_sector()
477 		result += (area + 1) << ic->log2_metadata_run;  in get_data_sector()
479 		result += (area + 1) * ic->metadata_run;  in get_data_sector()
481 	result += (sector_t)ic->initial_sectors + offset;  in get_data_sector()
482 	result += ic->start;  in get_data_sector()
487 static void wraparound_section(struct dm_integrity_c *ic, unsigned *sec_ptr)  in wraparound_section()  argument
489 	if (unlikely(*sec_ptr >= ic->journal_sections))  in wraparound_section()
490 		*sec_ptr -= ic->journal_sections;  in wraparound_section()
493 static void sb_set_version(struct dm_integrity_c *ic)  in sb_set_version()  argument
495 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC))  in sb_set_version()
496 		ic->sb->version = SB_VERSION_5;  in sb_set_version()
497 	else if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING))  in sb_set_version()
498 		ic->sb->version = SB_VERSION_4;  in sb_set_version()
499 	else if (ic->mode == 'B' || ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP))  in sb_set_version()
500 		ic->sb->version = SB_VERSION_3;  in sb_set_version()
501 	else if (ic->meta_dev || ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in sb_set_version()
502 		ic->sb->version = SB_VERSION_2;  in sb_set_version()
504 		ic->sb->version = SB_VERSION_1;  in sb_set_version()
507 static int sb_mac(struct dm_integrity_c *ic, bool wr)  in sb_mac()  argument
509 	SHASH_DESC_ON_STACK(desc, ic->journal_mac);  in sb_mac()
511 	unsigned size = crypto_shash_digestsize(ic->journal_mac);  in sb_mac()
514 		dm_integrity_io_error(ic, "digest is too long", -EINVAL);  in sb_mac()
518 	desc->tfm = ic->journal_mac;  in sb_mac()
522 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in sb_mac()
526 	r = crypto_shash_update(desc, (__u8 *)ic->sb, (1 << SECTOR_SHIFT) - size);  in sb_mac()
528 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in sb_mac()
533 		r = crypto_shash_final(desc, (__u8 *)ic->sb + (1 << SECTOR_SHIFT) - size);  in sb_mac()
535 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in sb_mac()
542 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in sb_mac()
545 		if (memcmp((__u8 *)ic->sb + (1 << SECTOR_SHIFT) - size, result, size)) {  in sb_mac()
546 			dm_integrity_io_error(ic, "superblock mac", -EILSEQ);  in sb_mac()
547 			dm_audit_log_target(DM_MSG_PREFIX, "mac-superblock", ic->ti, 0);  in sb_mac()
555 static int sync_rw_sb(struct dm_integrity_c *ic, blk_opf_t opf)  in sync_rw_sb()  argument
564 	io_req.mem.ptr.addr = ic->sb;  in sync_rw_sb()
566 	io_req.client = ic->io;  in sync_rw_sb()
567 	io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev;  in sync_rw_sb()
568 	io_loc.sector = ic->start;  in sync_rw_sb()
572 		sb_set_version(ic);  in sync_rw_sb()
573 		if (ic->journal_mac && ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in sync_rw_sb()
574 			r = sb_mac(ic, true);  in sync_rw_sb()
585 		if (ic->mode != 'R' && ic->journal_mac && ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in sync_rw_sb()
586 			r = sb_mac(ic, false);  in sync_rw_sb()
600 static bool block_bitmap_op(struct dm_integrity_c *ic, struct page_list *bitmap,  in block_bitmap_op()  argument
606 	if (unlikely(((sector | n_sectors) & ((1 << ic->sb->log2_sectors_per_block) - 1)) != 0)) {  in block_bitmap_op()
610 			ic->sb->log2_sectors_per_block,  in block_bitmap_op()
611 			ic->log2_blocks_per_bitmap_bit,  in block_bitmap_op()
619 	bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in block_bitmap_op()
621 		(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in block_bitmap_op()
705 static void block_bitmap_copy(struct dm_integrity_c *ic, struct page_list *dst, struct page_list *s…  in block_bitmap_copy()  argument
707 	unsigned n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE);  in block_bitmap_copy()
717 static struct bitmap_block_status *sector_to_bitmap_block(struct dm_integrity_c *ic, sector_t secto…  in sector_to_bitmap_block()  argument
719 	unsigned bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in sector_to_bitmap_block()
722 	BUG_ON(bitmap_block >= ic->n_bitmap_blocks);  in sector_to_bitmap_block()
723 	return &ic->bbs[bitmap_block];  in sector_to_bitmap_block()
726 static void access_journal_check(struct dm_integrity_c *ic, unsigned section, unsigned offset,  in access_journal_check()  argument
730 	unsigned limit = e ? ic->journal_section_entries : ic->journal_section_sectors;  in access_journal_check()
732 	if (unlikely(section >= ic->journal_sections) ||  in access_journal_check()
735 		       function, section, offset, ic->journal_sections, limit);  in access_journal_check()
741 static void page_list_location(struct dm_integrity_c *ic, unsigned section, unsigned offset,  in page_list_location()  argument
746 	access_journal_check(ic, section, offset, false, "page_list_location");  in page_list_location()
748 	sector = section * ic->journal_section_sectors + offset;  in page_list_location()
754 static struct journal_sector *access_page_list(struct dm_integrity_c *ic, struct page_list *pl,  in access_page_list()  argument
760 	page_list_location(ic, section, offset, &pl_index, &pl_offset);  in access_page_list()
770 static struct journal_sector *access_journal(struct dm_integrity_c *ic, unsigned section, unsigned …  in access_journal()  argument
772 	return access_page_list(ic, ic->journal, section, offset, NULL);  in access_journal()
775 static struct journal_entry *access_journal_entry(struct dm_integrity_c *ic, unsigned section, unsi…  in access_journal_entry()  argument
780 	access_journal_check(ic, section, n, true, "access_journal_entry");  in access_journal_entry()
785 	js = access_journal(ic, section, rel_sector);  in access_journal_entry()
786 	return (struct journal_entry *)((char *)js + offset * ic->journal_entry_size);  in access_journal_entry()
789 static struct journal_sector *access_journal_data(struct dm_integrity_c *ic, unsigned section, unsi…  in access_journal_data()  argument
791 	n <<= ic->sb->log2_sectors_per_block;  in access_journal_data()
795 	access_journal_check(ic, section, n, false, "access_journal_data");  in access_journal_data()
797 	return access_journal(ic, section, n);  in access_journal_data()
800 static void section_mac(struct dm_integrity_c *ic, unsigned section, __u8 result[JOURNAL_MAC_SIZE])  in section_mac()  argument
802 	SHASH_DESC_ON_STACK(desc, ic->journal_mac);  in section_mac()
806 	desc->tfm = ic->journal_mac;  in section_mac()
810 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in section_mac()
814 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) {  in section_mac()
817 		r = crypto_shash_update(desc, (__u8 *)&ic->sb->salt, SALT_SIZE);  in section_mac()
819 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
826 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
831 	for (j = 0; j < ic->journal_section_entries; j++) {  in section_mac()
832 		struct journal_entry *je = access_journal_entry(ic, section, j);  in section_mac()
835 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
840 	size = crypto_shash_digestsize(ic->journal_mac);  in section_mac()
845 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in section_mac()
853 			dm_integrity_io_error(ic, "digest_size", -EINVAL);  in section_mac()
858 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in section_mac()
869 static void rw_section_mac(struct dm_integrity_c *ic, unsigned section, bool wr)  in rw_section_mac()  argument
874 	if (!ic->journal_mac)  in rw_section_mac()
877 	section_mac(ic, section, result);  in rw_section_mac()
880 		struct journal_sector *js = access_journal(ic, section, j);  in rw_section_mac()
886 				dm_integrity_io_error(ic, "journal mac", -EILSEQ);  in rw_section_mac()
887 				dm_audit_log_target(DM_MSG_PREFIX, "mac-journal", ic->ti, 0);  in rw_section_mac()
901 static void xor_journal(struct dm_integrity_c *ic, bool encrypt, unsigned section,  in xor_journal()  argument
905 	size_t n_bytes = (size_t)(n_sections * ic->journal_section_sectors) << SECTOR_SHIFT;  in xor_journal()
910 		source_pl = ic->journal;  in xor_journal()
911 		target_pl = ic->journal_io;  in xor_journal()
913 		source_pl = ic->journal_io;  in xor_journal()
914 		target_pl = ic->journal;  in xor_journal()
917 	page_list_location(ic, section, 0, &pl_index, &pl_offset);  in xor_journal()
933 				rw_section_mac(ic, section, true);  in xor_journal()
938 			page_list_location(ic, section, 0, &section_index, &dummy);  in xor_journal()
944 		src_pages[1] = ic->journal_xor[pl_index].page;  in xor_journal()
963 			complete(&comp->ic->crypto_backoff);  in complete_journal_encrypt()
966 		dm_integrity_io_error(comp->ic, "asynchronous encrypt", err);  in complete_journal_encrypt()
985 		wait_for_completion(&comp->ic->crypto_backoff);  in do_crypt()
986 		reinit_completion(&comp->ic->crypto_backoff);  in do_crypt()
989 	dm_integrity_io_error(comp->ic, "encrypt", r);  in do_crypt()
993 static void crypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned section,  in crypt_journal()  argument
1002 		source_sg = ic->journal_scatterlist;  in crypt_journal()
1003 		target_sg = ic->journal_io_scatterlist;  in crypt_journal()
1005 		source_sg = ic->journal_io_scatterlist;  in crypt_journal()
1006 		target_sg = ic->journal_scatterlist;  in crypt_journal()
1015 			rw_section_mac(ic, section, true);  in crypt_journal()
1017 		req = ic->sk_requests[section];  in crypt_journal()
1018 		ivsize = crypto_skcipher_ivsize(ic->journal_crypt);  in crypt_journal()
1037 static void encrypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned section,  in encrypt_journal()  argument
1040 	if (ic->journal_xor)  in encrypt_journal()
1041 		return xor_journal(ic, encrypt, section, n_sections, comp);  in encrypt_journal()
1043 		return crypt_journal(ic, encrypt, section, n_sections, comp);  in encrypt_journal()
1050 		dm_integrity_io_error(comp->ic, "writing journal", -EIO);  in complete_journal_io()
1054 static void rw_journal_sectors(struct dm_integrity_c *ic, blk_opf_t opf,  in rw_journal_sectors()  argument
1063 	if (unlikely(dm_integrity_failed(ic))) {  in rw_journal_sectors()
1074 	if (ic->journal_io)  in rw_journal_sectors()
1075 		io_req.mem.ptr.pl = &ic->journal_io[pl_index];  in rw_journal_sectors()
1077 		io_req.mem.ptr.pl = &ic->journal[pl_index];  in rw_journal_sectors()
1085 	io_req.client = ic->io;  in rw_journal_sectors()
1086 	io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev;  in rw_journal_sectors()
1087 	io_loc.sector = ic->start + SB_SECTORS + sector;  in rw_journal_sectors()
1092 		dm_integrity_io_error(ic, (opf & REQ_OP_MASK) == REQ_OP_READ ?  in rw_journal_sectors()
1101 static void rw_journal(struct dm_integrity_c *ic, blk_opf_t opf,  in rw_journal()  argument
1107 	sector = section * ic->journal_section_sectors;  in rw_journal()
1108 	n_sectors = n_sections * ic->journal_section_sectors;  in rw_journal()
1110 	rw_journal_sectors(ic, opf, sector, n_sectors, comp);  in rw_journal()
1113 static void write_journal(struct dm_integrity_c *ic, unsigned commit_start, unsigned commit_section…  in write_journal()  argument
1120 	io_comp.ic = ic;  in write_journal()
1123 	if (commit_start + commit_sections <= ic->journal_sections) {  in write_journal()
1125 		if (ic->journal_io) {  in write_journal()
1126 			crypt_comp_1.ic = ic;  in write_journal()
1129 			encrypt_journal(ic, true, commit_start, commit_sections, &crypt_comp_1);  in write_journal()
1133 				rw_section_mac(ic, commit_start + i, true);  in write_journal()
1135 		rw_journal(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, commit_start,  in write_journal()
1140 		to_end = ic->journal_sections - commit_start;  in write_journal()
1141 		if (ic->journal_io) {  in write_journal()
1142 			crypt_comp_1.ic = ic;  in write_journal()
1145 			encrypt_journal(ic, true, commit_start, to_end, &crypt_comp_1);  in write_journal()
1147 				rw_journal(ic, REQ_OP_WRITE | REQ_FUA,  in write_journal()
1151 				encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_1);  in write_journal()
1154 				crypt_comp_2.ic = ic;  in write_journal()
1157 				encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_2);  in write_journal()
1159 				rw_journal(ic, REQ_OP_WRITE | REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1164 				rw_section_mac(ic, commit_start + i, true);  in write_journal()
1165 			rw_journal(ic, REQ_OP_WRITE | REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1167 				rw_section_mac(ic, i, true);  in write_journal()
1169 		rw_journal(ic, REQ_OP_WRITE | REQ_FUA, 0, commit_sections - to_end, &io_comp);  in write_journal()
1175 static void copy_from_journal(struct dm_integrity_c *ic, unsigned section, unsigned offset,  in copy_from_journal()  argument
1183 	BUG_ON((target | n_sectors | offset) & (unsigned)(ic->sectors_per_block - 1));  in copy_from_journal()
1185 	if (unlikely(dm_integrity_failed(ic))) {  in copy_from_journal()
1190 	sector = section * ic->journal_section_sectors + JOURNAL_BLOCK_SECTORS + offset;  in copy_from_journal()
1197 	io_req.mem.ptr.pl = &ic->journal[pl_index];  in copy_from_journal()
1201 	io_req.client = ic->io;  in copy_from_journal()
1202 	io_loc.bdev = ic->dev->bdev;  in copy_from_journal()
1219 static bool add_new_range(struct dm_integrity_c *ic, struct dm_integrity_range *new_range, bool che…  in add_new_range()  argument
1221 	struct rb_node **n = &ic->in_progress.rb_node;  in add_new_range()
1224 	BUG_ON((new_range->logical_sector | new_range->n_sectors) & (unsigned)(ic->sectors_per_block - 1));  in add_new_range()
1228 		list_for_each_entry(range, &ic->wait_list, wait_entry) {  in add_new_range()
1250 	rb_insert_color(&new_range->node, &ic->in_progress);  in add_new_range()
1255 static void remove_range_unlocked(struct dm_integrity_c *ic, struct dm_integrity_range *range)  in remove_range_unlocked()  argument
1257 	rb_erase(&range->node, &ic->in_progress);  in remove_range_unlocked()
1258 	while (unlikely(!list_empty(&ic->wait_list))) {  in remove_range_unlocked()
1260 			list_first_entry(&ic->wait_list, struct dm_integrity_range, wait_entry);  in remove_range_unlocked()
1264 		if (!add_new_range(ic, last_range, false)) {  in remove_range_unlocked()
1266 			list_add(&last_range->wait_entry, &ic->wait_list);  in remove_range_unlocked()
1274 static void remove_range(struct dm_integrity_c *ic, struct dm_integrity_range *range)  in remove_range()  argument
1278 	spin_lock_irqsave(&ic->endio_wait.lock, flags);  in remove_range()
1279 	remove_range_unlocked(ic, range);  in remove_range()
1280 	spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in remove_range()
1283 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
1286 	list_add_tail(&new_range->wait_entry, &ic->wait_list);  in wait_and_add_new_range()
1290 		spin_unlock_irq(&ic->endio_wait.lock);  in wait_and_add_new_range()
1292 		spin_lock_irq(&ic->endio_wait.lock);  in wait_and_add_new_range()
1296 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
1298 	if (unlikely(!add_new_range(ic, new_range, true)))  in add_new_range_and_wait()
1299 		wait_and_add_new_range(ic, new_range);  in add_new_range_and_wait()
1308 static void add_journal_node(struct dm_integrity_c *ic, struct journal_node *node, sector_t sector)  in add_journal_node()  argument
1316 	link = &ic->journal_tree_root.rb_node;  in add_journal_node()
1330 	rb_insert_color(&node->node, &ic->journal_tree_root);  in add_journal_node()
1333 static void remove_journal_node(struct dm_integrity_c *ic, struct journal_node *node)  in remove_journal_node()  argument
1336 	rb_erase(&node->node, &ic->journal_tree_root);  in remove_journal_node()
1342 static unsigned find_journal_node(struct dm_integrity_c *ic, sector_t sector, sector_t *next_sector)  in find_journal_node()  argument
1344 	struct rb_node *n = ic->journal_tree_root.rb_node;  in find_journal_node()
1350 			found = j - ic->journal_tree;  in find_journal_node()
1363 static bool test_journal_node(struct dm_integrity_c *ic, unsigned pos, sector_t sector)  in test_journal_node()  argument
1368 	if (unlikely(pos >= ic->journal_entries))  in test_journal_node()
1370 	node = &ic->journal_tree[pos];  in test_journal_node()
1384 static bool find_newer_committed_node(struct dm_integrity_c *ic, struct journal_node *node)  in find_newer_committed_node()  argument
1401 	next_section = (unsigned)(next_node - ic->journal_tree) / ic->journal_section_entries;  in find_newer_committed_node()
1402 	if (next_section >= ic->committed_section &&  in find_newer_committed_node()
1403 	    next_section < ic->committed_section + ic->n_committed_sections)  in find_newer_committed_node()
1405 	if (next_section + ic->journal_sections < ic->committed_section + ic->n_committed_sections)  in find_newer_committed_node()
1415 static int dm_integrity_rw_tag(struct dm_integrity_c *ic, unsigned char *tag, sector_t *metadata_bl…  in dm_integrity_rw_tag()  argument
1421 	unsigned may_be = MAY_BE_HASH | (ic->discard ? MAY_BE_FILLER : 0);  in dm_integrity_rw_tag()
1429 		r = dm_integrity_failed(ic);  in dm_integrity_rw_tag()
1433 		data = dm_bufio_read(ic->bufio, *metadata_block, &b);  in dm_integrity_rw_tag()
1437 		to_copy = min((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - *metadata_offset, total_size);  in dm_integrity_rw_tag()
1449 			if (likely(is_power_of_2(ic->tag_size))) {  in dm_integrity_rw_tag()
1451 					if (unlikely(!ic->discard) ||  in dm_integrity_rw_tag()
1466 					if (unlikely(hash_offset == ic->tag_size)) {  in dm_integrity_rw_tag()
1472 						may_be = MAY_BE_HASH | (ic->discard ? MAY_BE_FILLER : 0);  in dm_integrity_rw_tag()
1481 		if (unlikely(*metadata_offset == 1U << SECTOR_SHIFT << ic->log2_buffer_sectors)) {  in dm_integrity_rw_tag()
1486 		if (unlikely(!is_power_of_2(ic->tag_size))) {  in dm_integrity_rw_tag()
1487 			hash_offset = (hash_offset + to_copy) % ic->tag_size;  in dm_integrity_rw_tag()
1501 	struct dm_integrity_c *ic;  member
1509 		dm_integrity_io_error(fr->ic, "flushing disk cache", -EIO);  in flush_notify()
1513 static void dm_integrity_flush_buffers(struct dm_integrity_c *ic, bool flush_data)  in dm_integrity_flush_buffers()  argument
1519 	if (!ic->meta_dev)  in dm_integrity_flush_buffers()
1527 		fr.io_req.client = dm_bufio_get_dm_io_client(ic->bufio),  in dm_integrity_flush_buffers()
1528 		fr.io_reg.bdev = ic->dev->bdev,  in dm_integrity_flush_buffers()
1531 		fr.ic = ic;  in dm_integrity_flush_buffers()
1537 	r = dm_bufio_write_dirty_buffers(ic->bufio);  in dm_integrity_flush_buffers()
1539 		dm_integrity_io_error(ic, "writing tags", r);  in dm_integrity_flush_buffers()
1545 static void sleep_on_endio_wait(struct dm_integrity_c *ic)  in sleep_on_endio_wait()  argument
1548 	__add_wait_queue(&ic->endio_wait, &wait);  in sleep_on_endio_wait()
1550 	spin_unlock_irq(&ic->endio_wait.lock);  in sleep_on_endio_wait()
1552 	spin_lock_irq(&ic->endio_wait.lock);  in sleep_on_endio_wait()
1553 	__remove_wait_queue(&ic->endio_wait, &wait);  in sleep_on_endio_wait()
1558 	struct dm_integrity_c *ic = from_timer(ic, t, autocommit_timer);  in autocommit_fn()  local
1560 	if (likely(!dm_integrity_failed(ic)))  in autocommit_fn()
1561 		queue_work(ic->commit_wq, &ic->commit_work);  in autocommit_fn()
1564 static void schedule_autocommit(struct dm_integrity_c *ic)  in schedule_autocommit()  argument
1566 	if (!timer_pending(&ic->autocommit_timer))  in schedule_autocommit()
1567 		mod_timer(&ic->autocommit_timer, jiffies + ic->autocommit_jiffies);  in schedule_autocommit()
1570 static void submit_flush_bio(struct dm_integrity_c *ic, struct dm_integrity_io *dio)  in submit_flush_bio()  argument
1575 	spin_lock_irqsave(&ic->endio_wait.lock, flags);  in submit_flush_bio()
1577 	bio_list_add(&ic->flush_bio_list, bio);  in submit_flush_bio()
1578 	spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in submit_flush_bio()
1580 	queue_work(ic->commit_wq, &ic->commit_work);  in submit_flush_bio()
1583 static void do_endio(struct dm_integrity_c *ic, struct bio *bio)  in do_endio()  argument
1585 	int r = dm_integrity_failed(ic);  in do_endio()
1588 	if (unlikely(ic->synchronous_mode) && bio_op(bio) == REQ_OP_WRITE) {  in do_endio()
1590 		spin_lock_irqsave(&ic->endio_wait.lock, flags);  in do_endio()
1591 		bio_list_add(&ic->synchronous_bios, bio);  in do_endio()
1592 		queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in do_endio()
1593 		spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in do_endio()
1599 static void do_endio_flush(struct dm_integrity_c *ic, struct dm_integrity_io *dio)  in do_endio_flush()  argument
1603 	if (unlikely(dio->fua) && likely(!bio->bi_status) && likely(!dm_integrity_failed(ic)))  in do_endio_flush()
1604 		submit_flush_bio(ic, dio);  in do_endio_flush()
1606 		do_endio(ic, bio);  in do_endio_flush()
1612 		struct dm_integrity_c *ic = dio->ic;  in dec_in_flight()  local
1615 		remove_range(ic, &dio->range);  in dec_in_flight()
1618 			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 digest_size = crypto_shash_digestsize(ic->internal_hash);  in integrity_metadata()
1715 		unsigned 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()
1741 			unsigned max_blocks = max_size / ic->tag_size;  in integrity_metadata()
1745 				unsigned this_step_blocks = bi_size >> (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);  in integrity_metadata()
1747 				r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1748 							this_step_blocks * ic->tag_size, TAG_WRITE);  in integrity_metadata()
1755 				/*if (bi_size < this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block)) {  in integrity_metadata()
1760 				bi_size -= this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);  in integrity_metadata()
1761 				bi_sector += this_step_blocks << ic->sb->log2_sectors_per_block;  in integrity_metadata()
1781 				integrity_sector_checksum(ic, sector, mem + pos, checksums_ptr);  in integrity_metadata()
1782 				checksums_ptr += ic->tag_size;  in integrity_metadata()
1783 				sectors_to_process -= ic->sectors_per_block;  in integrity_metadata()
1784 				pos += ic->sectors_per_block << SECTOR_SHIFT;  in integrity_metadata()
1785 				sector += ic->sectors_per_block;  in integrity_metadata()
1789 			r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1795 					s = sector - ((r + ic->tag_size - 1) / ic->tag_size);  in integrity_metadata()
1799 					atomic64_inc(&ic->number_of_mismatches);  in integrity_metadata()
1827 			sector_to_block(ic, data_to_process);  in integrity_metadata()
1828 			data_to_process *= ic->tag_size;  in integrity_metadata()
1837 				r = dm_integrity_rw_tag(ic, tag, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1857 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_map()  local
1863 	dio->ic = ic;  in dm_integrity_map()
1881 		submit_flush_bio(ic, dio);  in dm_integrity_map()
1894 	if (unlikely(dio->range.logical_sector + bio_sectors(bio) > ic->provided_data_sectors)) {  in dm_integrity_map()
1897 		      ic->provided_data_sectors);  in dm_integrity_map()
1900 …if (unlikely((dio->range.logical_sector | bio_sectors(bio)) & (unsigned)(ic->sectors_per_block - 1…  in dm_integrity_map()
1902 		      ic->sectors_per_block,  in dm_integrity_map()
1907 	if (ic->sectors_per_block > 1 && likely(dio->op != REQ_OP_DISCARD)) {  in dm_integrity_map()
1911 			if (unlikely(bv.bv_len & ((ic->sectors_per_block << SECTOR_SHIFT) - 1))) {  in dm_integrity_map()
1913 					bv.bv_offset, bv.bv_len, ic->sectors_per_block);  in dm_integrity_map()
1920 	if (!ic->internal_hash) {  in dm_integrity_map()
1922 			unsigned 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 tag_todo = ic->tag_size;  in __journal_read_write()
2017 				char *tag_ptr = journal_entry_tag(ic, je);  in __journal_read_write()
2042 				js = access_journal_data(ic, journal_section, journal_entry);  in __journal_read_write()
2043 				memcpy(js, mem + bv.bv_offset, ic->sectors_per_block << SECTOR_SHIFT);  in __journal_read_write()
2048 				} while (++s < ic->sectors_per_block);  in __journal_read_write()
2050 				if (ic->internal_hash) {  in __journal_read_write()
2051 					unsigned digest_size = crypto_shash_digestsize(ic->internal_hash);  in __journal_read_write()
2052 					if (unlikely(digest_size > ic->tag_size)) {  in __journal_read_write()
2054 						integrity_sector_checksum(ic, logical_sector, (char *)js, checksums_onstack);  in __journal_read_write()
2055 						memcpy(journal_entry_tag(ic, je), checksums_onstack, ic->tag_size);  in __journal_read_write()
2057 						integrity_sector_checksum(ic, logical_sector, (char *)js, journal_entry_tag(ic, je));  in __journal_read_write()
2062 			logical_sector += ic->sectors_per_block;  in __journal_read_write()
2065 			if (unlikely(journal_entry == ic->journal_section_entries)) {  in __journal_read_write()
2068 				wraparound_section(ic, &journal_section);  in __journal_read_write()
2071 			bv.bv_offset += ic->sectors_per_block << SECTOR_SHIFT;  in __journal_read_write()
2072 		} while (bv.bv_len -= ic->sectors_per_block << SECTOR_SHIFT);  in __journal_read_write()
2081 		if (unlikely(waitqueue_active(&ic->copy_to_journal_wait)))  in __journal_read_write()
2082 			wake_up(&ic->copy_to_journal_wait);  in __journal_read_write()
2083 		if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold) {  in __journal_read_write()
2084 			queue_work(ic->commit_wq, &ic->commit_work);  in __journal_read_write()
2086 			schedule_autocommit(ic);  in __journal_read_write()
2089 		remove_range(ic, &dio->range);  in __journal_read_write()
2096 		get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in __journal_read_write()
2097 		dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset);  in __journal_read_write()
2106 	struct dm_integrity_c *ic = dio->ic;  in dm_integrity_map_continue()  local
2112 	bool need_sync_io = ic->internal_hash && dio->op == REQ_OP_READ;  in dm_integrity_map_continue()
2113 	if (unlikely(dio->op == REQ_OP_DISCARD) && ic->mode != 'D')  in dm_integrity_map_continue()
2118 		queue_work(ic->offload_wq, &dio->work);  in dm_integrity_map_continue()
2123 	spin_lock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2125 	if (unlikely(dm_integrity_failed(ic))) {  in dm_integrity_map_continue()
2126 		spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2127 		do_endio(ic, bio);  in dm_integrity_map_continue()
2132 	if (ic->mode == 'J' && likely(dio->op != REQ_OP_DISCARD)) {  in dm_integrity_map_continue()
2138 						   (sector_t)ic->free_sectors << ic->sb->log2_sectors_per_block);  in dm_integrity_map_continue()
2142 				sleep_on_endio_wait(ic);  in dm_integrity_map_continue()
2145 			range_sectors = dio->range.n_sectors >> ic->sb->log2_sectors_per_block;  in dm_integrity_map_continue()
2146 			ic->free_sectors -= range_sectors;  in dm_integrity_map_continue()
2147 			journal_section = ic->free_section;  in dm_integrity_map_continue()
2148 			journal_entry = ic->free_section_entry;  in dm_integrity_map_continue()
2150 			next_entry = ic->free_section_entry + range_sectors;  in dm_integrity_map_continue()
2151 			ic->free_section_entry = next_entry % ic->journal_section_entries;  in dm_integrity_map_continue()
2152 			ic->free_section += next_entry / ic->journal_section_entries;  in dm_integrity_map_continue()
2153 			ic->n_uncommitted_sections += next_entry / ic->journal_section_entries;  in dm_integrity_map_continue()
2154 			wraparound_section(ic, &ic->free_section);  in dm_integrity_map_continue()
2156 			pos = journal_section * ic->journal_section_entries + journal_entry;  in dm_integrity_map_continue()
2163 				add_journal_node(ic, &ic->journal_tree[pos], dio->range.logical_sector + i);  in dm_integrity_map_continue()
2165 				if (unlikely(pos >= ic->journal_entries))  in dm_integrity_map_continue()
2168 				je = access_journal_entry(ic, ws, we);  in dm_integrity_map_continue()
2172 				if (unlikely(we == ic->journal_section_entries)) {  in dm_integrity_map_continue()
2175 					wraparound_section(ic, &ws);  in dm_integrity_map_continue()
2177 			} while ((i += ic->sectors_per_block) < dio->range.n_sectors);  in dm_integrity_map_continue()
2179 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2183 			journal_read_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2190 				for (i = ic->sectors_per_block; i < dio->range.n_sectors; i += ic->sectors_per_block, jp++) {  in dm_integrity_map_continue()
2191 					if (!test_journal_node(ic, jp, dio->range.logical_sector + i))  in dm_integrity_map_continue()
2198 	if (unlikely(!add_new_range(ic, &dio->range, true))) {  in dm_integrity_map_continue()
2206 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2208 			queue_work(ic->wait_wq, &dio->work);  in dm_integrity_map_continue()
2212 			dio->range.n_sectors = ic->sectors_per_block;  in dm_integrity_map_continue()
2213 		wait_and_add_new_range(ic, &dio->range);  in dm_integrity_map_continue()
2221 			unsigned new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2223 				remove_range_unlocked(ic, &dio->range);  in dm_integrity_map_continue()
2228 	if (ic->mode == 'J' && likely(dio->op == REQ_OP_DISCARD) && !discard_retried) {  in dm_integrity_map_continue()
2230 		unsigned new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2233 			remove_range_unlocked(ic, &dio->range);  in dm_integrity_map_continue()
2234 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2235 			queue_work(ic->commit_wq, &ic->commit_work);  in dm_integrity_map_continue()
2236 			flush_workqueue(ic->commit_wq);  in dm_integrity_map_continue()
2237 			queue_work(ic->writer_wq, &ic->writer_work);  in dm_integrity_map_continue()
2238 			flush_workqueue(ic->writer_wq);  in dm_integrity_map_continue()
2243 	spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2246 		journal_section = journal_read_pos / ic->journal_section_entries;  in dm_integrity_map_continue()
2247 		journal_entry = journal_read_pos % ic->journal_section_entries;  in dm_integrity_map_continue()
2251 	if (ic->mode == 'B' && (dio->op == REQ_OP_WRITE || unlikely(dio->op == REQ_OP_DISCARD))) {  in dm_integrity_map_continue()
2252 		if (!block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in dm_integrity_map_continue()
2256 			bbs = sector_to_bitmap_block(ic, dio->range.logical_sector);  in dm_integrity_map_continue()
2260 			queue_work(ic->writer_wq, &bbs->work);  in dm_integrity_map_continue()
2274 	bio_set_dev(bio, ic->dev->bdev);  in dm_integrity_map_continue()
2280 	if (unlikely(dio->op == REQ_OP_DISCARD) && likely(ic->mode != 'D')) {  in dm_integrity_map_continue()
2282 		dm_integrity_flush_buffers(ic, false);  in dm_integrity_map_continue()
2296 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_map_continue()
2297 		    dio->range.logical_sector + dio->range.n_sectors > le64_to_cpu(ic->sb->recalc_sector))  in dm_integrity_map_continue()
2299 		if (ic->mode == 'B') {  in dm_integrity_map_continue()
2300 			if (!block_bitmap_op(ic, ic->recalc_bitmap, dio->range.logical_sector,  in dm_integrity_map_continue()
2313 		queue_work(ic->metadata_wq, &dio->work);  in dm_integrity_map_continue()
2322 	do_endio_flush(ic, dio);  in dm_integrity_map_continue()
2333 static void pad_uncommitted(struct dm_integrity_c *ic)  in pad_uncommitted()  argument
2335 	if (ic->free_section_entry) {  in pad_uncommitted()
2336 		ic->free_sectors -= ic->journal_section_entries - ic->free_section_entry;  in pad_uncommitted()
2337 		ic->free_section_entry = 0;  in pad_uncommitted()
2338 		ic->free_section++;  in pad_uncommitted()
2339 		wraparound_section(ic, &ic->free_section);  in pad_uncommitted()
2340 		ic->n_uncommitted_sections++;  in pad_uncommitted()
2342 	if (WARN_ON(ic->journal_sections * ic->journal_section_entries !=  in pad_uncommitted()
2343 		    (ic->n_uncommitted_sections + ic->n_committed_sections) *  in pad_uncommitted()
2344 		    ic->journal_section_entries + ic->free_sectors)) {  in pad_uncommitted()
2348 		       ic->journal_sections, ic->journal_section_entries,  in pad_uncommitted()
2349 		       ic->n_uncommitted_sections, ic->n_committed_sections,  in pad_uncommitted()
2350 		       ic->journal_section_entries, ic->free_sectors);  in pad_uncommitted()
2356 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, commit_work);  in integrity_commit()  local
2361 	del_timer(&ic->autocommit_timer);  in integrity_commit()
2363 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_commit()
2364 	flushes = bio_list_get(&ic->flush_bio_list);  in integrity_commit()
2365 	if (unlikely(ic->mode != 'J')) {  in integrity_commit()
2366 		spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2367 		dm_integrity_flush_buffers(ic, true);  in integrity_commit()
2371 	pad_uncommitted(ic);  in integrity_commit()
2372 	commit_start = ic->uncommitted_section;  in integrity_commit()
2373 	commit_sections = ic->n_uncommitted_sections;  in integrity_commit()
2374 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2379 	ic->wrote_to_journal = true;  in integrity_commit()
2383 		for (j = 0; j < ic->journal_section_entries; j++) {  in integrity_commit()
2385 			je = access_journal_entry(ic, i, j);  in integrity_commit()
2386 			io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je));  in integrity_commit()
2388 		for (j = 0; j < ic->journal_section_sectors; j++) {  in integrity_commit()
2390 			js = access_journal(ic, i, j);  in integrity_commit()
2391 			js->commit_id = dm_integrity_commit_id(ic, i, j, ic->commit_seq);  in integrity_commit()
2394 		if (unlikely(i >= ic->journal_sections))  in integrity_commit()
2395 			ic->commit_seq = next_commit_seq(ic->commit_seq);  in integrity_commit()
2396 		wraparound_section(ic, &i);  in integrity_commit()
2400 	write_journal(ic, commit_start, commit_sections);  in integrity_commit()
2402 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_commit()
2403 	ic->uncommitted_section += commit_sections;  in integrity_commit()
2404 	wraparound_section(ic, &ic->uncommitted_section);  in integrity_commit()
2405 	ic->n_uncommitted_sections -= commit_sections;  in integrity_commit()
2406 	ic->n_committed_sections += commit_sections;  in integrity_commit()
2407 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2409 	if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold)  in integrity_commit()
2410 		queue_work(ic->writer_wq, &ic->writer_work);  in integrity_commit()
2416 		do_endio(ic, flushes);  in integrity_commit()
2425 	struct dm_integrity_c *ic = comp->ic;  in complete_copy_from_journal()  local
2426 	remove_range(ic, &io->range);  in complete_copy_from_journal()
2427 	mempool_free(io, &ic->journal_io_mempool);  in complete_copy_from_journal()
2429 		dm_integrity_io_error(ic, "copying from journal", -EIO);  in complete_copy_from_journal()
2433 static void restore_last_bytes(struct dm_integrity_c *ic, struct journal_sector *js,  in restore_last_bytes()  argument
2440 	} while (++s < ic->sectors_per_block);  in restore_last_bytes()
2443 static void do_journal_write(struct dm_integrity_c *ic, unsigned write_start,  in do_journal_write()  argument
2452 	comp.ic = ic;  in do_journal_write()
2457 	for (n = 0; n < write_sections; n++, i++, wraparound_section(ic, &i)) {  in do_journal_write()
2461 			rw_section_mac(ic, i, false);  in do_journal_write()
2462 		for (j = 0; j < ic->journal_section_entries; j++) {  in do_journal_write()
2463 			struct journal_entry *je = access_journal_entry(ic, i, j);  in do_journal_write()
2475 				if (unlikely(sec & (unsigned)(ic->sectors_per_block - 1))) {  in do_journal_write()
2476 					dm_integrity_io_error(ic, "invalid sector in journal", -EIO);  in do_journal_write()
2477 					sec &= ~(sector_t)(ic->sectors_per_block - 1);  in do_journal_write()
2479 				if (unlikely(sec >= ic->provided_data_sectors)) {  in do_journal_write()
2484 			get_area_and_offset(ic, sec, &area, &offset);  in do_journal_write()
2485 			restore_last_bytes(ic, access_journal_data(ic, i, j), je);  in do_journal_write()
2486 			for (k = j + 1; k < ic->journal_section_entries; k++) {  in do_journal_write()
2487 				struct journal_entry *je2 = access_journal_entry(ic, i, k);  in do_journal_write()
2493 				if (unlikely(sec2 >= ic->provided_data_sectors))  in do_journal_write()
2495 				get_area_and_offset(ic, sec2, &area2, &offset2);  in do_journal_write()
2496 				if (area2 != area || offset2 != offset + ((k - j) << ic->sb->log2_sectors_per_block))  in do_journal_write()
2498 				restore_last_bytes(ic, access_journal_data(ic, i, k), je2);  in do_journal_write()
2502 			io = mempool_alloc(&ic->journal_io_mempool, GFP_NOIO);  in do_journal_write()
2505 			io->range.n_sectors = (k - j) << ic->sb->log2_sectors_per_block;  in do_journal_write()
2507 			spin_lock_irq(&ic->endio_wait.lock);  in do_journal_write()
2508 			add_new_range_and_wait(ic, &io->range);  in do_journal_write()
2511 				struct journal_node *section_node = &ic->journal_tree[i * ic->journal_section_entries];  in do_journal_write()
2514 				while (j < k && find_newer_committed_node(ic, &section_node[j])) {  in do_journal_write()
2515 					struct journal_entry *je2 = access_journal_entry(ic, i, j);  in do_journal_write()
2518 					remove_journal_node(ic, &section_node[j]);  in do_journal_write()
2520 					sec += ic->sectors_per_block;  in do_journal_write()
2521 					offset += ic->sectors_per_block;  in do_journal_write()
2523 				while (j < k && find_newer_committed_node(ic, &section_node[k - 1])) {  in do_journal_write()
2524 					struct journal_entry *je2 = access_journal_entry(ic, i, k - 1);  in do_journal_write()
2527 					remove_journal_node(ic, &section_node[k - 1]);  in do_journal_write()
2531 					remove_range_unlocked(ic, &io->range);  in do_journal_write()
2532 					spin_unlock_irq(&ic->endio_wait.lock);  in do_journal_write()
2533 					mempool_free(io, &ic->journal_io_mempool);  in do_journal_write()
2537 					remove_journal_node(ic, &section_node[l]);  in do_journal_write()
2540 			spin_unlock_irq(&ic->endio_wait.lock);  in do_journal_write()
2542 			metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset);  in do_journal_write()
2545 				struct journal_entry *je2 = access_journal_entry(ic, i, l);  in do_journal_write()
2551 				    ic->internal_hash) {  in do_journal_write()
2554 					integrity_sector_checksum(ic, sec + ((l - j) << ic->sb->log2_sectors_per_block),  in do_journal_write()
2555 								  (char *)access_journal_data(ic, i, l), test_tag);  in do_journal_write()
2556 					if (unlikely(memcmp(test_tag, journal_entry_tag(ic, je2), ic->tag_size))) {  in do_journal_write()
2557 						dm_integrity_io_error(ic, "tag mismatch when replaying journal", -EILSEQ);  in do_journal_write()
2558 						dm_audit_log_target(DM_MSG_PREFIX, "integrity-replay-journal", ic->ti, 0);  in do_journal_write()
2563 				r = dm_integrity_rw_tag(ic, journal_entry_tag(ic, je2), &metadata_block, &metadata_offset,  in do_journal_write()
2564 							ic->tag_size, TAG_WRITE);  in do_journal_write()
2566 					dm_integrity_io_error(ic, "reading tags", r);  in do_journal_write()
2571 			copy_from_journal(ic, i, j << ic->sb->log2_sectors_per_block,  in do_journal_write()
2572 					  (k - j) << ic->sb->log2_sectors_per_block,  in do_journal_write()
2573 					  get_data_sector(ic, area, offset),  in do_journal_write()
2580 	dm_bufio_write_dirty_buffers_async(ic->bufio);  in do_journal_write()
2587 	dm_integrity_flush_buffers(ic, true);  in do_journal_write()
2592 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, writer_work);  in integrity_writer()  local
2597 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_writer()
2598 	write_start = ic->committed_section;  in integrity_writer()
2599 	write_sections = ic->n_committed_sections;  in integrity_writer()
2600 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_writer()
2605 	do_journal_write(ic, write_start, write_sections, false);  in integrity_writer()
2607 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_writer()
2609 	ic->committed_section += write_sections;  in integrity_writer()
2610 	wraparound_section(ic, &ic->committed_section);  in integrity_writer()
2611 	ic->n_committed_sections -= write_sections;  in integrity_writer()
2613 	prev_free_sectors = ic->free_sectors;  in integrity_writer()
2614 	ic->free_sectors += write_sections * ic->journal_section_entries;  in integrity_writer()
2616 		wake_up_locked(&ic->endio_wait);  in integrity_writer()
2618 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_writer()
2621 static void recalc_write_super(struct dm_integrity_c *ic)  in recalc_write_super()  argument
2625 	dm_integrity_flush_buffers(ic, false);  in recalc_write_super()
2626 	if (dm_integrity_failed(ic))  in recalc_write_super()
2629 	r = sync_rw_sb(ic, REQ_OP_WRITE);  in recalc_write_super()
2631 		dm_integrity_io_error(ic, "writing superblock", r);  in recalc_write_super()
2636 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, recalc_work);  in integrity_recalc()  local
2649 	DEBUG_print("start recalculation... (position %llx)\n", le64_to_cpu(ic->sb->recalc_sector));  in integrity_recalc()
2651 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2655 	if (unlikely(dm_post_suspending(ic->ti)))  in integrity_recalc()
2658 	range.logical_sector = le64_to_cpu(ic->sb->recalc_sector);  in integrity_recalc()
2659 	if (unlikely(range.logical_sector >= ic->provided_data_sectors)) {  in integrity_recalc()
2660 		if (ic->mode == 'B') {  in integrity_recalc()
2661 			block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in integrity_recalc()
2663 			queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in integrity_recalc()
2668 	get_area_and_offset(ic, range.logical_sector, &area, &offset);  in integrity_recalc()
2669 	range.n_sectors = min((sector_t)RECALC_SECTORS, ic->provided_data_sectors - range.logical_sector);  in integrity_recalc()
2670 	if (!ic->meta_dev)  in integrity_recalc()
2671 …range.n_sectors = min(range.n_sectors, ((sector_t)1U << ic->sb->log2_interleave_sectors) - (unsign…  in integrity_recalc()
2673 	add_new_range_and_wait(ic, &range);  in integrity_recalc()
2674 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2678 	if (ic->mode == 'B') {  in integrity_recalc()
2679 		if (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector, n_sectors, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2682 		while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector,  in integrity_recalc()
2683 				       ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2684 			logical_sector += ic->sectors_per_block;  in integrity_recalc()
2685 			n_sectors -= ic->sectors_per_block;  in integrity_recalc()
2688 		while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector + n_sectors - ic->sectors_per_block,  in integrity_recalc()
2689 				       ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2690 			n_sectors -= ic->sectors_per_block;  in integrity_recalc()
2693 		get_area_and_offset(ic, logical_sector, &area, &offset);  in integrity_recalc()
2699 		recalc_write_super(ic);  in integrity_recalc()
2700 		if (ic->mode == 'B') {  in integrity_recalc()
2701 			queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval);  in integrity_recalc()
2706 	if (unlikely(dm_integrity_failed(ic)))  in integrity_recalc()
2711 	io_req.mem.ptr.addr = ic->recalc_buffer;  in integrity_recalc()
2713 	io_req.client = ic->io;  in integrity_recalc()
2714 	io_loc.bdev = ic->dev->bdev;  in integrity_recalc()
2715 	io_loc.sector = get_data_sector(ic, area, offset);  in integrity_recalc()
2720 		dm_integrity_io_error(ic, "reading data", r);  in integrity_recalc()
2724 	t = ic->recalc_tags;  in integrity_recalc()
2725 	for (i = 0; i < n_sectors; i += ic->sectors_per_block) {  in integrity_recalc()
2726 		integrity_sector_checksum(ic, logical_sector + i, ic->recalc_buffer + (i << SECTOR_SHIFT), t);  in integrity_recalc()
2727 		t += ic->tag_size;  in integrity_recalc()
2730 	metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset);  in integrity_recalc()
2732 …r = dm_integrity_rw_tag(ic, ic->recalc_tags, &metadata_block, &metadata_offset, t - ic->recalc_tag…  in integrity_recalc()
2734 		dm_integrity_io_error(ic, "writing tags", r);  in integrity_recalc()
2738 	if (ic->mode == 'B') {  in integrity_recalc()
2741 			 (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) <<  in integrity_recalc()
2742 			(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in integrity_recalc()
2744 		       (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) <<  in integrity_recalc()
2745 			(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in integrity_recalc()
2746 		block_bitmap_op(ic, ic->recalc_bitmap, start, end - start, BITMAP_OP_CLEAR);  in integrity_recalc()
2752 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2753 	remove_range_unlocked(ic, &range);  in integrity_recalc()
2754 	ic->sb->recalc_sector = cpu_to_le64(range.logical_sector + range.n_sectors);  in integrity_recalc()
2758 	remove_range(ic, &range);  in integrity_recalc()
2762 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2764 	recalc_write_super(ic);  in integrity_recalc()
2770 	struct dm_integrity_c *ic = bbs->ic;  in bitmap_block_work()  local
2787 		if (block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in bitmap_block_work()
2789 			remove_range(ic, &dio->range);  in bitmap_block_work()
2791 			queue_work(ic->offload_wq, &dio->work);  in bitmap_block_work()
2793 			block_bitmap_op(ic, ic->journal, dio->range.logical_sector,  in bitmap_block_work()
2802 	rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC,  in bitmap_block_work()
2809 		block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in bitmap_block_work()
2812 		remove_range(ic, &dio->range);  in bitmap_block_work()
2814 		queue_work(ic->offload_wq, &dio->work);  in bitmap_block_work()
2817 	queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval);  in bitmap_block_work()
2822 	struct dm_integrity_c *ic = container_of(work, struct dm_integrity_c, bitmap_flush_work.work);  in bitmap_flush_work()  local
2827 	dm_integrity_flush_buffers(ic, false);  in bitmap_flush_work()
2830 	range.n_sectors = ic->provided_data_sectors;  in bitmap_flush_work()
2832 	spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2833 	add_new_range_and_wait(ic, &range);  in bitmap_flush_work()
2834 	spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2836 	dm_integrity_flush_buffers(ic, true);  in bitmap_flush_work()
2838 	limit = ic->provided_data_sectors;  in bitmap_flush_work()
2839 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in bitmap_flush_work()
2840 		limit = le64_to_cpu(ic->sb->recalc_sector)  in bitmap_flush_work()
2841 			>> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)  in bitmap_flush_work()
2842 			<< (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in bitmap_flush_work()
2845 	block_bitmap_op(ic, ic->journal, 0, limit, BITMAP_OP_CLEAR);  in bitmap_flush_work()
2846 	block_bitmap_op(ic, ic->may_write_bitmap, 0, limit, BITMAP_OP_CLEAR);  in bitmap_flush_work()
2848 	rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in bitmap_flush_work()
2849 			   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in bitmap_flush_work()
2851 	spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2852 	remove_range_unlocked(ic, &range);  in bitmap_flush_work()
2853 	while (unlikely((bio = bio_list_pop(&ic->synchronous_bios)) != NULL)) {  in bitmap_flush_work()
2855 		spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2856 		spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2858 	spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2862 static void init_journal(struct dm_integrity_c *ic, unsigned start_section,  in init_journal()  argument
2872 		wraparound_section(ic, &i);  in init_journal()
2873 		for (j = 0; j < ic->journal_section_sectors; j++) {  in init_journal()
2874 			struct journal_sector *js = access_journal(ic, i, j);  in init_journal()
2877 			js->commit_id = dm_integrity_commit_id(ic, i, j, commit_seq);  in init_journal()
2879 		for (j = 0; j < ic->journal_section_entries; j++) {  in init_journal()
2880 			struct journal_entry *je = access_journal_entry(ic, i, j);  in init_journal()
2885 	write_journal(ic, start_section, n_sections);  in init_journal()
2888 static int find_commit_seq(struct dm_integrity_c *ic, unsigned i, unsigned j, commit_id_t id)  in find_commit_seq()  argument
2892 		if (dm_integrity_commit_id(ic, i, j, k) == id)  in find_commit_seq()
2895 	dm_integrity_io_error(ic, "journal commit id", -EIO);  in find_commit_seq()
2899 static void replay_journal(struct dm_integrity_c *ic)  in replay_journal()  argument
2909 	if (ic->mode == 'R')  in replay_journal()
2912 	if (ic->journal_uptodate)  in replay_journal()
2918 	if (!ic->just_formatted) {  in replay_journal()
2920 		rw_journal(ic, REQ_OP_READ, 0, ic->journal_sections, NULL);  in replay_journal()
2921 		if (ic->journal_io)  in replay_journal()
2922 			DEBUG_bytes(lowmem_page_address(ic->journal_io[0].page), 64, "read journal");  in replay_journal()
2923 		if (ic->journal_io) {  in replay_journal()
2925 			crypt_comp.ic = ic;  in replay_journal()
2928 			encrypt_journal(ic, false, 0, ic->journal_sections, &crypt_comp);  in replay_journal()
2931 		DEBUG_bytes(lowmem_page_address(ic->journal[0].page), 64, "decrypted journal");  in replay_journal()
2934 	if (dm_integrity_failed(ic))  in replay_journal()
2940 	for (i = 0; i < ic->journal_sections; i++) {  in replay_journal()
2941 		for (j = 0; j < ic->journal_section_sectors; j++) {  in replay_journal()
2943 			struct journal_sector *js = access_journal(ic, i, j);  in replay_journal()
2944 			k = find_commit_seq(ic, i, j, js->commit_id);  in replay_journal()
2951 			for (j = 0; j < ic->journal_section_entries; j++) {  in replay_journal()
2952 				struct journal_entry *je = access_journal_entry(ic, i, j);  in replay_journal()
2970 			dm_integrity_io_error(ic, "journal commit ids", -EIO);  in replay_journal()
2985 	if (unlikely(write_start >= ic->journal_sections))  in replay_journal()
2987 	wraparound_section(ic, &write_start);  in replay_journal()
2990 	for (write_sections = 0; write_sections < ic->journal_sections; write_sections++) {  in replay_journal()
2991 		for (j = 0; j < ic->journal_section_sectors; j++) {  in replay_journal()
2992 			struct journal_sector *js = access_journal(ic, i, j);  in replay_journal()
2994 			if (js->commit_id != dm_integrity_commit_id(ic, i, j, want_commit_seq)) {  in replay_journal()
3001 					    i, j, find_commit_seq(ic, i, j, js->commit_id), want_commit_seq);  in replay_journal()
3006 		if (unlikely(i >= ic->journal_sections))  in replay_journal()
3008 		wraparound_section(ic, &i);  in replay_journal()
3015 		do_journal_write(ic, write_start, write_sections, true);  in replay_journal()
3018 	if (write_sections == ic->journal_sections && (ic->mode == 'J' || journal_empty)) {  in replay_journal()
3020 		ic->commit_seq = want_commit_seq;  in replay_journal()
3021 		DEBUG_print("continuing from section %u, commit seq %d\n", write_start, ic->commit_seq);  in replay_journal()
3030 		init_journal(ic, s, 1, erase_seq);  in replay_journal()
3032 		wraparound_section(ic, &s);  in replay_journal()
3033 		if (ic->journal_sections >= 2) {  in replay_journal()
3034 			init_journal(ic, s, ic->journal_sections - 2, erase_seq);  in replay_journal()
3035 			s += ic->journal_sections - 2;  in replay_journal()
3036 			wraparound_section(ic, &s);  in replay_journal()
3037 			init_journal(ic, s, 1, erase_seq);  in replay_journal()
3041 		ic->commit_seq = next_commit_seq(erase_seq);  in replay_journal()
3044 	ic->committed_section = continue_section;  in replay_journal()
3045 	ic->n_committed_sections = 0;  in replay_journal()
3047 	ic->uncommitted_section = continue_section;  in replay_journal()
3048 	ic->n_uncommitted_sections = 0;  in replay_journal()
3050 	ic->free_section = continue_section;  in replay_journal()
3051 	ic->free_section_entry = 0;  in replay_journal()
3052 	ic->free_sectors = ic->journal_entries;  in replay_journal()
3054 	ic->journal_tree_root = RB_ROOT;  in replay_journal()
3055 	for (i = 0; i < ic->journal_entries; i++)  in replay_journal()
3056 		init_journal_node(&ic->journal_tree[i]);  in replay_journal()
3059 static void dm_integrity_enter_synchronous_mode(struct dm_integrity_c *ic)  in dm_integrity_enter_synchronous_mode()  argument
3063 	if (ic->mode == 'B') {  in dm_integrity_enter_synchronous_mode()
3064 		ic->bitmap_flush_interval = msecs_to_jiffies(10) + 1;  in dm_integrity_enter_synchronous_mode()
3065 		ic->synchronous_mode = 1;  in dm_integrity_enter_synchronous_mode()
3067 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_enter_synchronous_mode()
3068 		queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in dm_integrity_enter_synchronous_mode()
3069 		flush_workqueue(ic->commit_wq);  in dm_integrity_enter_synchronous_mode()
3075 	struct dm_integrity_c *ic = container_of(n, struct dm_integrity_c, reboot_notifier);  in dm_integrity_reboot()  local
3079 	dm_integrity_enter_synchronous_mode(ic);  in dm_integrity_reboot()
3086 	struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private;  in dm_integrity_postsuspend()  local
3089 	WARN_ON(unregister_reboot_notifier(&ic->reboot_notifier));  in dm_integrity_postsuspend()
3091 	del_timer_sync(&ic->autocommit_timer);  in dm_integrity_postsuspend()
3093 	if (ic->recalc_wq)  in dm_integrity_postsuspend()
3094 		drain_workqueue(ic->recalc_wq);  in dm_integrity_postsuspend()
3096 	if (ic->mode == 'B')  in dm_integrity_postsuspend()
3097 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_postsuspend()
3099 	queue_work(ic->commit_wq, &ic->commit_work);  in dm_integrity_postsuspend()
3100 	drain_workqueue(ic->commit_wq);  in dm_integrity_postsuspend()
3102 	if (ic->mode == 'J') {  in dm_integrity_postsuspend()
3103 		queue_work(ic->writer_wq, &ic->writer_work);  in dm_integrity_postsuspend()
3104 		drain_workqueue(ic->writer_wq);  in dm_integrity_postsuspend()
3105 		dm_integrity_flush_buffers(ic, true);  in dm_integrity_postsuspend()
3106 		if (ic->wrote_to_journal) {  in dm_integrity_postsuspend()
3107 			init_journal(ic, ic->free_section,  in dm_integrity_postsuspend()
3108 				     ic->journal_sections - ic->free_section, ic->commit_seq);  in dm_integrity_postsuspend()
3109 			if (ic->free_section) {  in dm_integrity_postsuspend()
3110 				init_journal(ic, 0, ic->free_section,  in dm_integrity_postsuspend()
3111 					     next_commit_seq(ic->commit_seq));  in dm_integrity_postsuspend()
3116 	if (ic->mode == 'B') {  in dm_integrity_postsuspend()
3117 		dm_integrity_flush_buffers(ic, true);  in dm_integrity_postsuspend()
3120 		init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_postsuspend()
3121 		ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_postsuspend()
3122 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_postsuspend()
3124 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_postsuspend()
3128 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));  in dm_integrity_postsuspend()
3130 	ic->journal_uptodate = true;  in dm_integrity_postsuspend()
3135 	struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private;  in dm_integrity_resume()  local
3136 	__u64 old_provided_data_sectors = le64_to_cpu(ic->sb->provided_data_sectors);  in dm_integrity_resume()
3141 	ic->wrote_to_journal = false;  in dm_integrity_resume()
3143 	if (ic->provided_data_sectors != old_provided_data_sectors) {  in dm_integrity_resume()
3144 		if (ic->provided_data_sectors > old_provided_data_sectors &&  in dm_integrity_resume()
3145 		    ic->mode == 'B' &&  in dm_integrity_resume()
3146 		    ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit) {  in dm_integrity_resume()
3147 			rw_journal_sectors(ic, REQ_OP_READ, 0,  in dm_integrity_resume()
3148 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3149 			block_bitmap_op(ic, ic->journal, old_provided_data_sectors,  in dm_integrity_resume()
3150 					ic->provided_data_sectors - old_provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3151 			rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3152 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3155 		ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);  in dm_integrity_resume()
3156 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3158 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3161 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP)) {  in dm_integrity_resume()
3163 		rw_journal_sectors(ic, REQ_OP_READ, 0,  in dm_integrity_resume()
3164 				   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3165 		if (ic->mode == 'B') {  in dm_integrity_resume()
3166 			if (ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit &&  in dm_integrity_resume()
3167 			    !ic->reset_recalculate_flag) {  in dm_integrity_resume()
3168 				block_bitmap_copy(ic, ic->recalc_bitmap, ic->journal);  in dm_integrity_resume()
3169 				block_bitmap_copy(ic, ic->may_write_bitmap, ic->journal);  in dm_integrity_resume()
3170 				if (!block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors,  in dm_integrity_resume()
3172 					ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3173 					ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3177 					    ic->sb->log2_blocks_per_bitmap_bit, ic->log2_blocks_per_bitmap_bit);  in dm_integrity_resume()
3178 				ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;  in dm_integrity_resume()
3179 				block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3180 				block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3181 				block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3182 				rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3183 						   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3184 				ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3185 				ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3188 			if (!(ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit &&  in dm_integrity_resume()
3189 …	      block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_TEST_ALL_CLEAR)) ||  in dm_integrity_resume()
3190 			    ic->reset_recalculate_flag) {  in dm_integrity_resume()
3191 				ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3192 				ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3194 			init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_resume()
3195 			replay_journal(ic);  in dm_integrity_resume()
3196 			ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_resume()
3198 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3200 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3202 		replay_journal(ic);  in dm_integrity_resume()
3203 		if (ic->reset_recalculate_flag) {  in dm_integrity_resume()
3204 			ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3205 			ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3207 		if (ic->mode == 'B') {  in dm_integrity_resume()
3208 			ic->sb->flags |= cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_resume()
3209 			ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;  in dm_integrity_resume()
3210 			r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_resume()
3212 				dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3214 			block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3215 			block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3216 			block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3217 			if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_resume()
3218 			    le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors) {  in dm_integrity_resume()
3219 				block_bitmap_op(ic, ic->journal, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3220 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3221 				block_bitmap_op(ic, ic->recalc_bitmap, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3222 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3223 				block_bitmap_op(ic, ic->may_write_bitmap, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3224 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3226 			rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3227 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3231 	DEBUG_print("testing recalc: %x\n", ic->sb->flags);  in dm_integrity_resume()
3232 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in dm_integrity_resume()
3233 		__u64 recalc_pos = le64_to_cpu(ic->sb->recalc_sector);  in dm_integrity_resume()
3234 		DEBUG_print("recalc pos: %llx / %llx\n", recalc_pos, ic->provided_data_sectors);  in dm_integrity_resume()
3235 		if (recalc_pos < ic->provided_data_sectors) {  in dm_integrity_resume()
3236 			queue_work(ic->recalc_wq, &ic->recalc_work);  in dm_integrity_resume()
3237 		} else if (recalc_pos > ic->provided_data_sectors) {  in dm_integrity_resume()
3238 			ic->sb->recalc_sector = cpu_to_le64(ic->provided_data_sectors);  in dm_integrity_resume()
3239 			recalc_write_super(ic);  in dm_integrity_resume()
3243 	ic->reboot_notifier.notifier_call = dm_integrity_reboot;  in dm_integrity_resume()
3244 	ic->reboot_notifier.next = NULL;  in dm_integrity_resume()
3245 	ic->reboot_notifier.priority = INT_MAX - 1;	/* be notified after md and before hardware drivers */  in dm_integrity_resume()
3246 	WARN_ON(register_reboot_notifier(&ic->reboot_notifier));  in dm_integrity_resume()
3250 	dm_integrity_enter_synchronous_mode(ic);  in dm_integrity_resume()
3257 	struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private;  in dm_integrity_status()  local
3264 			(unsigned long long)atomic64_read(&ic->number_of_mismatches),  in dm_integrity_status()
3265 			ic->provided_data_sectors);  in dm_integrity_status()
3266 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in dm_integrity_status()
3267 			DMEMIT(" %llu", le64_to_cpu(ic->sb->recalc_sector));  in dm_integrity_status()
3273 		__u64 watermark_percentage = (__u64)(ic->journal_entries - ic->free_sectors_threshold) * 100;  in dm_integrity_status()
3274 		watermark_percentage += ic->journal_entries / 2;  in dm_integrity_status()
3275 		do_div(watermark_percentage, ic->journal_entries);  in dm_integrity_status()
3277 		arg_count += !!ic->meta_dev;  in dm_integrity_status()
3278 		arg_count += ic->sectors_per_block != 1;  in dm_integrity_status()
3279 		arg_count += !!(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING));  in dm_integrity_status()
3280 		arg_count += ic->reset_recalculate_flag;  in dm_integrity_status()
3281 		arg_count += ic->discard;  in dm_integrity_status()
3282 		arg_count += ic->mode == 'J';  in dm_integrity_status()
3283 		arg_count += ic->mode == 'J';  in dm_integrity_status()
3284 		arg_count += ic->mode == 'B';  in dm_integrity_status()
3285 		arg_count += ic->mode == 'B';  in dm_integrity_status()
3286 		arg_count += !!ic->internal_hash_alg.alg_string;  in dm_integrity_status()
3287 		arg_count += !!ic->journal_crypt_alg.alg_string;  in dm_integrity_status()
3288 		arg_count += !!ic->journal_mac_alg.alg_string;  in dm_integrity_status()
3289 		arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0;  in dm_integrity_status()
3290 		arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0;  in dm_integrity_status()
3291 		arg_count += ic->legacy_recalculate;  in dm_integrity_status()
3292 		DMEMIT("%s %llu %u %c %u", ic->dev->name, ic->start,  in dm_integrity_status()
3293 		       ic->tag_size, ic->mode, arg_count);  in dm_integrity_status()
3294 		if (ic->meta_dev)  in dm_integrity_status()
3295 			DMEMIT(" meta_device:%s", ic->meta_dev->name);  in dm_integrity_status()
3296 		if (ic->sectors_per_block != 1)  in dm_integrity_status()
3297 			DMEMIT(" block_size:%u", ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_status()
3298 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in dm_integrity_status()
3300 		if (ic->reset_recalculate_flag)  in dm_integrity_status()
3302 		if (ic->discard)  in dm_integrity_status()
3304 		DMEMIT(" journal_sectors:%u", ic->initial_sectors - SB_SECTORS);  in dm_integrity_status()
3305 		DMEMIT(" interleave_sectors:%u", 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_status()
3306 		DMEMIT(" buffer_sectors:%u", 1U << ic->log2_buffer_sectors);  in dm_integrity_status()
3307 		if (ic->mode == 'J') {  in dm_integrity_status()
3309 			DMEMIT(" commit_time:%u", ic->autocommit_msec);  in dm_integrity_status()
3311 		if (ic->mode == 'B') {  in dm_integrity_status()
3312 …DMEMIT(" sectors_per_bit:%llu", (sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit);  in dm_integrity_status()
3313 			DMEMIT(" bitmap_flush_interval:%u", jiffies_to_msecs(ic->bitmap_flush_interval));  in dm_integrity_status()
3315 		if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0)  in dm_integrity_status()
3317 		if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0)  in dm_integrity_status()
3319 		if (ic->legacy_recalculate)  in dm_integrity_status()
3324 			if (ic->a.alg_string) {				\  in dm_integrity_status()
3325 				DMEMIT(" %s:%s", n, ic->a.alg_string);	\  in dm_integrity_status()
3326 				if (ic->a.key_string)			\  in dm_integrity_status()
3327 					DMEMIT(":%s", ic->a.key_string);\  in dm_integrity_status()
3338 			ic->dev->name, ic->start, ic->tag_size, ic->mode);  in dm_integrity_status()
3340 		if (ic->meta_dev)  in dm_integrity_status()
3341 			DMEMIT(",meta_device=%s", ic->meta_dev->name);  in dm_integrity_status()
3342 		if (ic->sectors_per_block != 1)  in dm_integrity_status()
3343 			DMEMIT(",block_size=%u", ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_status()
3345 		DMEMIT(",recalculate=%c", (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) ?  in dm_integrity_status()
3347 		DMEMIT(",allow_discards=%c", ic->discard ? 'y' : 'n');  in dm_integrity_status()
3349 		       ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0) ? 'y' : 'n');  in dm_integrity_status()
3351 		       ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) != 0) ? 'y' : 'n');  in dm_integrity_status()
3352 		DMEMIT(",legacy_recalculate=%c", ic->legacy_recalculate ? 'y' : 'n');  in dm_integrity_status()
3354 		DMEMIT(",journal_sectors=%u", ic->initial_sectors - SB_SECTORS);  in dm_integrity_status()
3355 		DMEMIT(",interleave_sectors=%u", 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_status()
3356 		DMEMIT(",buffer_sectors=%u", 1U << ic->log2_buffer_sectors);  in dm_integrity_status()
3365 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_iterate_devices()  local
3367 	if (!ic->meta_dev)  in dm_integrity_iterate_devices()
3368 		return fn(ti, ic->dev, ic->start + ic->initial_sectors + ic->metadata_run, ti->len, data);  in dm_integrity_iterate_devices()
3370 		return fn(ti, ic->dev, 0, ti->len, data);  in dm_integrity_iterate_devices()
3375 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_io_hints()  local
3377 	if (ic->sectors_per_block > 1) {  in dm_integrity_io_hints()
3378 		limits->logical_block_size = ic->sectors_per_block << SECTOR_SHIFT;  in dm_integrity_io_hints()
3379 		limits->physical_block_size = ic->sectors_per_block << SECTOR_SHIFT;  in dm_integrity_io_hints()
3380 		blk_limits_io_min(limits, ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_io_hints()
3385 static void calculate_journal_section_size(struct dm_integrity_c *ic)  in calculate_journal_section_size()  argument
3389 	ic->journal_sections = le32_to_cpu(ic->sb->journal_sections);  in calculate_journal_section_size()
3390 …ic->journal_entry_size = roundup(offsetof(struct journal_entry, last_bytes[ic->sectors_per_block])…  in calculate_journal_section_size()
3393 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC))  in calculate_journal_section_size()
3395 	ic->journal_entries_per_sector = sector_space / ic->journal_entry_size;  in calculate_journal_section_size()
3396 	ic->journal_section_entries = ic->journal_entries_per_sector * JOURNAL_BLOCK_SECTORS;  in calculate_journal_section_size()
3397 …ic->journal_section_sectors = (ic->journal_section_entries << ic->sb->log2_sectors_per_block) + JO…  in calculate_journal_section_size()
3398 	ic->journal_entries = ic->journal_section_entries * ic->journal_sections;  in calculate_journal_section_size()
3401 static int calculate_device_limits(struct dm_integrity_c *ic)  in calculate_device_limits()  argument
3405 	calculate_journal_section_size(ic);  in calculate_device_limits()
3406 	initial_sectors = SB_SECTORS + (__u64)ic->journal_section_sectors * ic->journal_sections;  in calculate_device_limits()
3407 …if (initial_sectors + METADATA_PADDING_SECTORS >= ic->meta_device_sectors || initial_sectors > UIN…  in calculate_device_limits()
3409 	ic->initial_sectors = initial_sectors;  in calculate_device_limits()
3411 	if (!ic->meta_dev) {  in calculate_device_limits()
3416 			ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING) ?  in calculate_device_limits()
3420 …ic->metadata_run = round_up((__u64)ic->tag_size << (ic->sb->log2_interleave_sectors - ic->sb->log2…  in calculate_device_limits()
3422 		if (!(ic->metadata_run & (ic->metadata_run - 1)))  in calculate_device_limits()
3423 			ic->log2_metadata_run = __ffs(ic->metadata_run);  in calculate_device_limits()
3425 			ic->log2_metadata_run = -1;  in calculate_device_limits()
3427 		get_area_and_offset(ic, ic->provided_data_sectors - 1, &last_area, &last_offset);  in calculate_device_limits()
3428 		last_sector = get_data_sector(ic, last_area, last_offset);  in calculate_device_limits()
3429 		if (last_sector < ic->start || last_sector >= ic->meta_device_sectors)  in calculate_device_limits()
3432 		__u64 meta_size = (ic->provided_data_sectors >> ic->sb->log2_sectors_per_block) * ic->tag_size;  in calculate_device_limits()
3433 		meta_size = (meta_size + ((1U << (ic->log2_buffer_sectors + SECTOR_SHIFT)) - 1))  in calculate_device_limits()
3434 				>> (ic->log2_buffer_sectors + SECTOR_SHIFT);  in calculate_device_limits()
3435 		meta_size <<= ic->log2_buffer_sectors;  in calculate_device_limits()
3436 		if (ic->initial_sectors + meta_size < ic->initial_sectors ||  in calculate_device_limits()
3437 		    ic->initial_sectors + meta_size > ic->meta_device_sectors)  in calculate_device_limits()
3439 		ic->metadata_run = 1;  in calculate_device_limits()
3440 		ic->log2_metadata_run = 0;  in calculate_device_limits()
3446 static void get_provided_data_sectors(struct dm_integrity_c *ic)  in get_provided_data_sectors()  argument
3448 	if (!ic->meta_dev) {  in get_provided_data_sectors()
3450 		ic->provided_data_sectors = 0;  in get_provided_data_sectors()
3451 		for (test_bit = fls64(ic->meta_device_sectors) - 1; test_bit >= 3; test_bit--) {  in get_provided_data_sectors()
3452 			__u64 prev_data_sectors = ic->provided_data_sectors;  in get_provided_data_sectors()
3454 			ic->provided_data_sectors |= (sector_t)1 << test_bit;  in get_provided_data_sectors()
3455 			if (calculate_device_limits(ic))  in get_provided_data_sectors()
3456 				ic->provided_data_sectors = prev_data_sectors;  in get_provided_data_sectors()
3459 		ic->provided_data_sectors = ic->data_device_sectors;  in get_provided_data_sectors()
3460 		ic->provided_data_sectors &= ~(sector_t)(ic->sectors_per_block - 1);  in get_provided_data_sectors()
3464 static int initialize_superblock(struct dm_integrity_c *ic, unsigned journal_sectors, unsigned inte…  in initialize_superblock()  argument
3469 	memset(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT);  in initialize_superblock()
3470 	memcpy(ic->sb->magic, SB_MAGIC, 8);  in initialize_superblock()
3471 	ic->sb->integrity_tag_size = cpu_to_le16(ic->tag_size);  in initialize_superblock()
3472 	ic->sb->log2_sectors_per_block = __ffs(ic->sectors_per_block);  in initialize_superblock()
3473 	if (ic->journal_mac_alg.alg_string)  in initialize_superblock()
3474 		ic->sb->flags |= cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC);  in initialize_superblock()
3476 	calculate_journal_section_size(ic);  in initialize_superblock()
3477 	journal_sections = journal_sectors / ic->journal_section_sectors;  in initialize_superblock()
3481 	if (ic->fix_hmac && (ic->internal_hash_alg.alg_string || ic->journal_mac_alg.alg_string)) {  in initialize_superblock()
3482 		ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_HMAC);  in initialize_superblock()
3483 		get_random_bytes(ic->sb->salt, SALT_SIZE);  in initialize_superblock()
3486 	if (!ic->meta_dev) {  in initialize_superblock()
3487 		if (ic->fix_padding)  in initialize_superblock()
3488 			ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_PADDING);  in initialize_superblock()
3489 		ic->sb->journal_sections = cpu_to_le32(journal_sections);  in initialize_superblock()
3492 		ic->sb->log2_interleave_sectors = __fls(interleave_sectors);  in initialize_superblock()
3493 …ic->sb->log2_interleave_sectors = max((__u8)MIN_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave_s…  in initialize_superblock()
3494 …ic->sb->log2_interleave_sectors = min((__u8)MAX_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave_s…  in initialize_superblock()
3496 		get_provided_data_sectors(ic);  in initialize_superblock()
3497 		if (!ic->provided_data_sectors)  in initialize_superblock()
3500 		ic->sb->log2_interleave_sectors = 0;  in initialize_superblock()
3502 		get_provided_data_sectors(ic);  in initialize_superblock()
3503 		if (!ic->provided_data_sectors)  in initialize_superblock()
3507 		ic->sb->journal_sections = cpu_to_le32(0);  in initialize_superblock()
3509 			__u32 prev_journal_sections = le32_to_cpu(ic->sb->journal_sections);  in initialize_superblock()
3513 			ic->sb->journal_sections = cpu_to_le32(test_journal_sections);  in initialize_superblock()
3514 			if (calculate_device_limits(ic))  in initialize_superblock()
3515 				ic->sb->journal_sections = cpu_to_le32(prev_journal_sections);  in initialize_superblock()
3518 		if (!le32_to_cpu(ic->sb->journal_sections)) {  in initialize_superblock()
3519 			if (ic->log2_buffer_sectors > 3) {  in initialize_superblock()
3520 				ic->log2_buffer_sectors--;  in initialize_superblock()
3527 	ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);  in initialize_superblock()
3529 	sb_set_version(ic);  in initialize_superblock()
3534 static void dm_integrity_set(struct dm_target *ti, struct dm_integrity_c *ic)  in dm_integrity_set()  argument
3541 	bi.tuple_size = ic->tag_size;  in dm_integrity_set()
3543 	bi.interval_exp = ic->sb->log2_sectors_per_block + SECTOR_SHIFT;  in dm_integrity_set()
3584 static void dm_integrity_free_journal_scatterlist(struct dm_integrity_c *ic, struct scatterlist **s…  in dm_integrity_free_journal_scatterlist()  argument
3587 	for (i = 0; i < ic->journal_sections; i++)  in dm_integrity_free_journal_scatterlist()
3592 static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_integrity_c *ic,  in dm_integrity_alloc_journal_scatterlist()  argument
3598 	sl = kvmalloc_array(ic->journal_sections,  in dm_integrity_alloc_journal_scatterlist()
3604 	for (i = 0; i < ic->journal_sections; i++) {  in dm_integrity_alloc_journal_scatterlist()
3611 		page_list_location(ic, i, 0, &start_index, &start_offset);  in dm_integrity_alloc_journal_scatterlist()
3612 		page_list_location(ic, i, ic->journal_section_sectors - 1,  in dm_integrity_alloc_journal_scatterlist()
3620 			dm_integrity_free_journal_scatterlist(ic, sl);  in dm_integrity_alloc_journal_scatterlist()
3711 static int create_journal(struct dm_integrity_c *ic, char **error)  in create_journal()  argument
3719 	ic->commit_ids[0] = cpu_to_le64(0x1111111111111111ULL);  in create_journal()
3720 	ic->commit_ids[1] = cpu_to_le64(0x2222222222222222ULL);  in create_journal()
3721 	ic->commit_ids[2] = cpu_to_le64(0x3333333333333333ULL);  in create_journal()
3722 	ic->commit_ids[3] = cpu_to_le64(0x4444444444444444ULL);  in create_journal()
3724 	journal_pages = roundup((__u64)ic->journal_sections * ic->journal_section_sectors,  in create_journal()
3732 	ic->journal_pages = journal_pages;  in create_journal()
3734 	ic->journal = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3735 	if (!ic->journal) {  in create_journal()
3740 	if (ic->journal_crypt_alg.alg_string) {  in create_journal()
3744 		comp.ic = ic;  in create_journal()
3745 …ic->journal_crypt = crypto_alloc_skcipher(ic->journal_crypt_alg.alg_string, 0, CRYPTO_ALG_ALLOCATE…  in create_journal()
3746 		if (IS_ERR(ic->journal_crypt)) {  in create_journal()
3748 			r = PTR_ERR(ic->journal_crypt);  in create_journal()
3749 			ic->journal_crypt = NULL;  in create_journal()
3752 		ivsize = crypto_skcipher_ivsize(ic->journal_crypt);  in create_journal()
3753 		blocksize = crypto_skcipher_blocksize(ic->journal_crypt);  in create_journal()
3755 		if (ic->journal_crypt_alg.key) {  in create_journal()
3756 			r = crypto_skcipher_setkey(ic->journal_crypt, ic->journal_crypt_alg.key,  in create_journal()
3757 						   ic->journal_crypt_alg.key_size);  in create_journal()
3764 			    ic->journal_crypt_alg.alg_string, blocksize, ivsize);  in create_journal()
3766 		ic->journal_io = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3767 		if (!ic->journal_io) {  in create_journal()
3776 			req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3790 			ic->journal_xor = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3791 			if (!ic->journal_xor) {  in create_journal()
3797 			sg = kvmalloc_array(ic->journal_pages + 1,  in create_journal()
3805 			sg_init_table(sg, ic->journal_pages + 1);  in create_journal()
3806 			for (i = 0; i < ic->journal_pages; i++) {  in create_journal()
3807 				char *va = lowmem_page_address(ic->journal_xor[i].page);  in create_journal()
3811 			sg_set_buf(&sg[i], &ic->commit_ids, sizeof ic->commit_ids);  in create_journal()
3814 						   PAGE_SIZE * ic->journal_pages + sizeof ic->commit_ids, crypt_iv);  in create_journal()
3820 			r = dm_integrity_failed(ic);  in create_journal()
3825 			DEBUG_bytes(lowmem_page_address(ic->journal_xor[0].page), 64, "xor data");  in create_journal()
3827 			crypto_free_skcipher(ic->journal_crypt);  in create_journal()
3828 			ic->journal_crypt = NULL;  in create_journal()
3832 			req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3853 			ic->journal_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal);  in create_journal()
3854 			if (!ic->journal_scatterlist) {  in create_journal()
3859 			ic->journal_io_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal_io);  in create_journal()
3860 			if (!ic->journal_io_scatterlist) {  in create_journal()
3865 			ic->sk_requests = kvmalloc_array(ic->journal_sections,  in create_journal()
3868 			if (!ic->sk_requests) {  in create_journal()
3873 			for (i = 0; i < ic->journal_sections; i++) {  in create_journal()
3889 				r = dm_integrity_failed(ic);  in create_journal()
3895 				section_req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3910 				section_req->cryptlen = (size_t)ic->journal_section_sectors << SECTOR_SHIFT;  in create_journal()
3911 				ic->sk_requests[i] = section_req;  in create_journal()
3921 			if (ic->commit_ids[j] == ic->commit_ids[i]) {  in create_journal()
3922 				ic->commit_ids[i] = cpu_to_le64(le64_to_cpu(ic->commit_ids[i]) + 1);  in create_journal()
3926 		DEBUG_print("commit id %u: %016llx\n", i, ic->commit_ids[i]);  in create_journal()
3929 	journal_tree_size = (__u64)ic->journal_entries * sizeof(struct journal_node);  in create_journal()
3935 	ic->journal_tree = kvmalloc(journal_tree_size, GFP_KERNEL);  in create_journal()
3936 	if (!ic->journal_tree) {  in create_journal()
3974 	struct dm_integrity_c *ic;  in dm_integrity_ctr()  local
3998 	ic = kzalloc(sizeof(struct dm_integrity_c), GFP_KERNEL);  in dm_integrity_ctr()
3999 	if (!ic) {  in dm_integrity_ctr()
4003 	ti->private = ic;  in dm_integrity_ctr()
4005 	ic->ti = ti;  in dm_integrity_ctr()
4007 	ic->in_progress = RB_ROOT;  in dm_integrity_ctr()
4008 	INIT_LIST_HEAD(&ic->wait_list);  in dm_integrity_ctr()
4009 	init_waitqueue_head(&ic->endio_wait);  in dm_integrity_ctr()
4010 	bio_list_init(&ic->flush_bio_list);  in dm_integrity_ctr()
4011 	init_waitqueue_head(&ic->copy_to_journal_wait);  in dm_integrity_ctr()
4012 	init_completion(&ic->crypto_backoff);  in dm_integrity_ctr()
4013 	atomic64_set(&ic->number_of_mismatches, 0);  in dm_integrity_ctr()
4014 	ic->bitmap_flush_interval = BITMAP_FLUSH_INTERVAL;  in dm_integrity_ctr()
4016 	r = dm_get_device(ti, argv[0], dm_table_get_mode(ti->table), &ic->dev);  in dm_integrity_ctr()
4027 	ic->start = start;  in dm_integrity_ctr()
4030 		if (sscanf(argv[2], "%u%c", &ic->tag_size, &dummy) != 1 || !ic->tag_size) {  in dm_integrity_ctr()
4039 		ic->mode = argv[3][0];  in dm_integrity_ctr()
4051 	ic->sectors_per_block = 1;  in dm_integrity_ctr()
4080 			if (ic->meta_dev) {  in dm_integrity_ctr()
4081 				dm_put_device(ti, ic->meta_dev);  in dm_integrity_ctr()
4082 				ic->meta_dev = NULL;  in dm_integrity_ctr()
4085 					  dm_table_get_mode(ti->table), &ic->meta_dev);  in dm_integrity_ctr()
4098 			ic->sectors_per_block = val >> SECTOR_SHIFT;  in dm_integrity_ctr()
4107 			ic->bitmap_flush_interval = msecs_to_jiffies(val);  in dm_integrity_ctr()
4109 			r = get_alg_and_key(opt_string, &ic->internal_hash_alg, &ti->error,  in dm_integrity_ctr()
4114 			r = get_alg_and_key(opt_string, &ic->journal_crypt_alg, &ti->error,  in dm_integrity_ctr()
4119 			r = get_alg_and_key(opt_string, &ic->journal_mac_alg, &ti->error,  in dm_integrity_ctr()
4124 			ic->recalculate_flag = true;  in dm_integrity_ctr()
4126 			ic->recalculate_flag = true;  in dm_integrity_ctr()
4127 			ic->reset_recalculate_flag = true;  in dm_integrity_ctr()
4129 			ic->discard = true;  in dm_integrity_ctr()
4131 			ic->fix_padding = true;  in dm_integrity_ctr()
4133 			ic->fix_hmac = true;  in dm_integrity_ctr()
4135 			ic->legacy_recalculate = true;  in dm_integrity_ctr()
4143 	ic->data_device_sectors = bdev_nr_sectors(ic->dev->bdev);  in dm_integrity_ctr()
4144 	if (!ic->meta_dev)  in dm_integrity_ctr()
4145 		ic->meta_device_sectors = ic->data_device_sectors;  in dm_integrity_ctr()
4147 		ic->meta_device_sectors = bdev_nr_sectors(ic->meta_dev->bdev);  in dm_integrity_ctr()
4151 				      ic->data_device_sectors >> DEFAULT_JOURNAL_SIZE_FACTOR);  in dm_integrity_ctr()
4156 	ic->log2_buffer_sectors = min((int)__fls(buffer_sectors), 31 - SECTOR_SHIFT);  in dm_integrity_ctr()
4158 	r = get_mac(&ic->internal_hash, &ic->internal_hash_alg, &ti->error,  in dm_integrity_ctr()
4163 	r = get_mac(&ic->journal_mac, &ic->journal_mac_alg, &ti->error,  in dm_integrity_ctr()
4168 	if (!ic->tag_size) {  in dm_integrity_ctr()
4169 		if (!ic->internal_hash) {  in dm_integrity_ctr()
4174 		ic->tag_size = crypto_shash_digestsize(ic->internal_hash);  in dm_integrity_ctr()
4176 	if (ic->tag_size > MAX_TAG_SIZE) {  in dm_integrity_ctr()
4181 	if (!(ic->tag_size & (ic->tag_size - 1)))  in dm_integrity_ctr()
4182 		ic->log2_tag_size = __ffs(ic->tag_size);  in dm_integrity_ctr()
4184 		ic->log2_tag_size = -1;  in dm_integrity_ctr()
4186 	if (ic->mode == 'B' && !ic->internal_hash) {  in dm_integrity_ctr()
4192 	if (ic->discard && !ic->internal_hash) {  in dm_integrity_ctr()
4198 	ic->autocommit_jiffies = msecs_to_jiffies(sync_msec);  in dm_integrity_ctr()
4199 	ic->autocommit_msec = sync_msec;  in dm_integrity_ctr()
4200 	timer_setup(&ic->autocommit_timer, autocommit_fn, 0);  in dm_integrity_ctr()
4202 	ic->io = dm_io_client_create();  in dm_integrity_ctr()
4203 	if (IS_ERR(ic->io)) {  in dm_integrity_ctr()
4204 		r = PTR_ERR(ic->io);  in dm_integrity_ctr()
4205 		ic->io = NULL;  in dm_integrity_ctr()
4210 	r = mempool_init_slab_pool(&ic->journal_io_mempool, JOURNAL_IO_MEMPOOL, journal_io_cache);  in dm_integrity_ctr()
4216 	ic->metadata_wq = alloc_workqueue("dm-integrity-metadata",  in dm_integrity_ctr()
4218 	if (!ic->metadata_wq) {  in dm_integrity_ctr()
4228 	ic->wait_wq = alloc_workqueue("dm-integrity-wait", WQ_MEM_RECLAIM | WQ_UNBOUND, 1);  in dm_integrity_ctr()
4229 	if (!ic->wait_wq) {  in dm_integrity_ctr()
4235 	ic->offload_wq = alloc_workqueue("dm-integrity-offload", WQ_MEM_RECLAIM,  in dm_integrity_ctr()
4237 	if (!ic->offload_wq) {  in dm_integrity_ctr()
4243 	ic->commit_wq = alloc_workqueue("dm-integrity-commit", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4244 	if (!ic->commit_wq) {  in dm_integrity_ctr()
4249 	INIT_WORK(&ic->commit_work, integrity_commit);  in dm_integrity_ctr()
4251 	if (ic->mode == 'J' || ic->mode == 'B') {  in dm_integrity_ctr()
4252 		ic->writer_wq = alloc_workqueue("dm-integrity-writer", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4253 		if (!ic->writer_wq) {  in dm_integrity_ctr()
4258 		INIT_WORK(&ic->writer_work, integrity_writer);  in dm_integrity_ctr()
4261 	ic->sb = alloc_pages_exact(SB_SECTORS << SECTOR_SHIFT, GFP_KERNEL);  in dm_integrity_ctr()
4262 	if (!ic->sb) {  in dm_integrity_ctr()
4268 	r = sync_rw_sb(ic, REQ_OP_READ);  in dm_integrity_ctr()
4274 	if (memcmp(ic->sb->magic, SB_MAGIC, 8)) {  in dm_integrity_ctr()
4275 		if (ic->mode != 'R') {  in dm_integrity_ctr()
4276 			if (memchr_inv(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT)) {  in dm_integrity_ctr()
4283 		r = initialize_superblock(ic, journal_sectors, interleave_sectors);  in dm_integrity_ctr()
4288 		if (ic->mode != 'R')  in dm_integrity_ctr()
4292 	if (!ic->sb->version || ic->sb->version > SB_VERSION_5) {  in dm_integrity_ctr()
4297 	if (le16_to_cpu(ic->sb->integrity_tag_size) != ic->tag_size) {  in dm_integrity_ctr()
4302 	if (ic->sb->log2_sectors_per_block != __ffs(ic->sectors_per_block)) {  in dm_integrity_ctr()
4307 	if (!le32_to_cpu(ic->sb->journal_sections)) {  in dm_integrity_ctr()
4313 	if (!ic->meta_dev) {  in dm_integrity_ctr()
4314 		if (ic->sb->log2_interleave_sectors < MIN_LOG2_INTERLEAVE_SECTORS ||  in dm_integrity_ctr()
4315 		    ic->sb->log2_interleave_sectors > MAX_LOG2_INTERLEAVE_SECTORS) {  in dm_integrity_ctr()
4321 		if (ic->sb->log2_interleave_sectors) {  in dm_integrity_ctr()
4327 …if (!!(ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC)) != !!ic->journal_mac_alg.alg_string)…  in dm_integrity_ctr()
4333 	get_provided_data_sectors(ic);  in dm_integrity_ctr()
4334 	if (!ic->provided_data_sectors) {  in dm_integrity_ctr()
4341 	r = calculate_device_limits(ic);  in dm_integrity_ctr()
4343 		if (ic->meta_dev) {  in dm_integrity_ctr()
4344 			if (ic->log2_buffer_sectors > 3) {  in dm_integrity_ctr()
4345 				ic->log2_buffer_sectors--;  in dm_integrity_ctr()
4355 	if (log2_sectors_per_bitmap_bit < ic->sb->log2_sectors_per_block)  in dm_integrity_ctr()
4356 		log2_sectors_per_bitmap_bit = ic->sb->log2_sectors_per_block;  in dm_integrity_ctr()
4358 …bits_in_journal = ((__u64)ic->journal_section_sectors * ic->journal_sections) << (SECTOR_SHIFT + 3…  in dm_integrity_ctr()
4361 …while (bits_in_journal < (ic->provided_data_sectors + ((sector_t)1 << log2_sectors_per_bitmap_bit)…  in dm_integrity_ctr()
4364 	log2_blocks_per_bitmap_bit = log2_sectors_per_bitmap_bit - ic->sb->log2_sectors_per_block;  in dm_integrity_ctr()
4365 	ic->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit;  in dm_integrity_ctr()
4367 		ic->sb->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit;  in dm_integrity_ctr()
4369 	n_bitmap_bits = ((ic->provided_data_sectors >> ic->sb->log2_sectors_per_block)  in dm_integrity_ctr()
4371 	ic->n_bitmap_blocks = DIV_ROUND_UP(n_bitmap_bits, BITMAP_BLOCK_SIZE * 8);  in dm_integrity_ctr()
4373 	if (!ic->meta_dev)  in dm_integrity_ctr()
4374 		ic->log2_buffer_sectors = min(ic->log2_buffer_sectors, (__u8)__ffs(ic->metadata_run));  in dm_integrity_ctr()
4376 	if (ti->len > ic->provided_data_sectors) {  in dm_integrity_ctr()
4383 	threshold = (__u64)ic->journal_entries * (100 - journal_watermark);  in dm_integrity_ctr()
4386 	ic->free_sectors_threshold = threshold;  in dm_integrity_ctr()
4389 	DEBUG_print("	integrity_tag_size %u\n", le16_to_cpu(ic->sb->integrity_tag_size));  in dm_integrity_ctr()
4390 	DEBUG_print("	journal_entry_size %u\n", ic->journal_entry_size);  in dm_integrity_ctr()
4391 	DEBUG_print("	journal_entries_per_sector %u\n", ic->journal_entries_per_sector);  in dm_integrity_ctr()
4392 	DEBUG_print("	journal_section_entries %u\n", ic->journal_section_entries);  in dm_integrity_ctr()
4393 	DEBUG_print("	journal_section_sectors %u\n", ic->journal_section_sectors);  in dm_integrity_ctr()
4394 	DEBUG_print("	journal_sections %u\n", (unsigned)le32_to_cpu(ic->sb->journal_sections));  in dm_integrity_ctr()
4395 	DEBUG_print("	journal_entries %u\n", ic->journal_entries);  in dm_integrity_ctr()
4396 	DEBUG_print("	log2_interleave_sectors %d\n", ic->sb->log2_interleave_sectors);  in dm_integrity_ctr()
4397 	DEBUG_print("	data_device_sectors 0x%llx\n", bdev_nr_sectors(ic->dev->bdev));  in dm_integrity_ctr()
4398 	DEBUG_print("	initial_sectors 0x%x\n", ic->initial_sectors);  in dm_integrity_ctr()
4399 	DEBUG_print("	metadata_run 0x%x\n", ic->metadata_run);  in dm_integrity_ctr()
4400 	DEBUG_print("	log2_metadata_run %d\n", ic->log2_metadata_run);  in dm_integrity_ctr()
4401 …DEBUG_print("	provided_data_sectors 0x%llx (%llu)\n", ic->provided_data_sectors, ic->provided_data…  in dm_integrity_ctr()
4402 	DEBUG_print("	log2_buffer_sectors %u\n", ic->log2_buffer_sectors);  in dm_integrity_ctr()
4405 	if (ic->recalculate_flag && !(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))) {  in dm_integrity_ctr()
4406 		ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_ctr()
4407 		ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_ctr()
4410 	if (ic->internal_hash) {  in dm_integrity_ctr()
4412 		ic->recalc_wq = alloc_workqueue("dm-integrity-recalc", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4413 		if (!ic->recalc_wq ) {  in dm_integrity_ctr()
4418 		INIT_WORK(&ic->recalc_work, integrity_recalc);  in dm_integrity_ctr()
4419 		ic->recalc_buffer = vmalloc(RECALC_SECTORS << SECTOR_SHIFT);  in dm_integrity_ctr()
4420 		if (!ic->recalc_buffer) {  in dm_integrity_ctr()
4425 		recalc_tags_size = (RECALC_SECTORS >> ic->sb->log2_sectors_per_block) * ic->tag_size;  in dm_integrity_ctr()
4426 		if (crypto_shash_digestsize(ic->internal_hash) > ic->tag_size)  in dm_integrity_ctr()
4427 			recalc_tags_size += crypto_shash_digestsize(ic->internal_hash) - ic->tag_size;  in dm_integrity_ctr()
4428 		ic->recalc_tags = kvmalloc(recalc_tags_size, GFP_KERNEL);  in dm_integrity_ctr()
4429 		if (!ic->recalc_tags) {  in dm_integrity_ctr()
4435 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in dm_integrity_ctr()
4442 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_ctr()
4443 	    le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors &&  in dm_integrity_ctr()
4444 	    dm_integrity_disable_recalculate(ic)) {  in dm_integrity_ctr()
4450 	ic->bufio = dm_bufio_client_create(ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev,  in dm_integrity_ctr()
4451 			1U << (SECTOR_SHIFT + ic->log2_buffer_sectors), 1, 0, NULL, NULL, 0);  in dm_integrity_ctr()
4452 	if (IS_ERR(ic->bufio)) {  in dm_integrity_ctr()
4453 		r = PTR_ERR(ic->bufio);  in dm_integrity_ctr()
4455 		ic->bufio = NULL;  in dm_integrity_ctr()
4458 	dm_bufio_set_sector_offset(ic->bufio, ic->start + ic->initial_sectors);  in dm_integrity_ctr()
4460 	if (ic->mode != 'R') {  in dm_integrity_ctr()
4461 		r = create_journal(ic, &ti->error);  in dm_integrity_ctr()
4467 	if (ic->mode == 'B') {  in dm_integrity_ctr()
4469 		unsigned n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE);  in dm_integrity_ctr()
4471 		ic->recalc_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages);  in dm_integrity_ctr()
4472 		if (!ic->recalc_bitmap) {  in dm_integrity_ctr()
4476 		ic->may_write_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages);  in dm_integrity_ctr()
4477 		if (!ic->may_write_bitmap) {  in dm_integrity_ctr()
4481 		ic->bbs = kvmalloc_array(ic->n_bitmap_blocks, sizeof(struct bitmap_block_status), GFP_KERNEL);  in dm_integrity_ctr()
4482 		if (!ic->bbs) {  in dm_integrity_ctr()
4486 		INIT_DELAYED_WORK(&ic->bitmap_flush_work, bitmap_flush_work);  in dm_integrity_ctr()
4487 		for (i = 0; i < ic->n_bitmap_blocks; i++) {  in dm_integrity_ctr()
4488 			struct bitmap_block_status *bbs = &ic->bbs[i];  in dm_integrity_ctr()
4492 			bbs->ic = ic;  in dm_integrity_ctr()
4501 			bbs->bitmap = lowmem_page_address(ic->journal[pl_index].page) + pl_offset;  in dm_integrity_ctr()
4506 		init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_ctr()
4507 		r = dm_integrity_failed(ic);  in dm_integrity_ctr()
4512 		r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);  in dm_integrity_ctr()
4517 		ic->just_formatted = true;  in dm_integrity_ctr()
4520 	if (!ic->meta_dev) {  in dm_integrity_ctr()
4521 		r = dm_set_target_max_io_len(ti, 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_ctr()
4525 	if (ic->mode == 'B') {  in dm_integrity_ctr()
4526 …unsigned max_io_len = ((sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit) * (BITMA…  in dm_integrity_ctr()
4537 	if (!ic->internal_hash)  in dm_integrity_ctr()
4538 		dm_integrity_set(ti, ic);  in dm_integrity_ctr()
4542 	if (ic->discard)  in dm_integrity_ctr()
4556 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_dtr()  local
4558 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));  in dm_integrity_dtr()
4559 	BUG_ON(!list_empty(&ic->wait_list));  in dm_integrity_dtr()
4561 	if (ic->metadata_wq)  in dm_integrity_dtr()
4562 		destroy_workqueue(ic->metadata_wq);  in dm_integrity_dtr()
4563 	if (ic->wait_wq)  in dm_integrity_dtr()
4564 		destroy_workqueue(ic->wait_wq);  in dm_integrity_dtr()
4565 	if (ic->offload_wq)  in dm_integrity_dtr()
4566 		destroy_workqueue(ic->offload_wq);  in dm_integrity_dtr()
4567 	if (ic->commit_wq)  in dm_integrity_dtr()
4568 		destroy_workqueue(ic->commit_wq);  in dm_integrity_dtr()
4569 	if (ic->writer_wq)  in dm_integrity_dtr()
4570 		destroy_workqueue(ic->writer_wq);  in dm_integrity_dtr()
4571 	if (ic->recalc_wq)  in dm_integrity_dtr()
4572 		destroy_workqueue(ic->recalc_wq);  in dm_integrity_dtr()
4573 	vfree(ic->recalc_buffer);  in dm_integrity_dtr()
4574 	kvfree(ic->recalc_tags);  in dm_integrity_dtr()
4575 	kvfree(ic->bbs);  in dm_integrity_dtr()
4576 	if (ic->bufio)  in dm_integrity_dtr()
4577 		dm_bufio_client_destroy(ic->bufio);  in dm_integrity_dtr()
4578 	mempool_exit(&ic->journal_io_mempool);  in dm_integrity_dtr()
4579 	if (ic->io)  in dm_integrity_dtr()
4580 		dm_io_client_destroy(ic->io);  in dm_integrity_dtr()
4581 	if (ic->dev)  in dm_integrity_dtr()
4582 		dm_put_device(ti, ic->dev);  in dm_integrity_dtr()
4583 	if (ic->meta_dev)  in dm_integrity_dtr()
4584 		dm_put_device(ti, ic->meta_dev);  in dm_integrity_dtr()
4585 	dm_integrity_free_page_list(ic->journal);  in dm_integrity_dtr()
4586 	dm_integrity_free_page_list(ic->journal_io);  in dm_integrity_dtr()
4587 	dm_integrity_free_page_list(ic->journal_xor);  in dm_integrity_dtr()
4588 	dm_integrity_free_page_list(ic->recalc_bitmap);  in dm_integrity_dtr()
4589 	dm_integrity_free_page_list(ic->may_write_bitmap);  in dm_integrity_dtr()
4590 	if (ic->journal_scatterlist)  in dm_integrity_dtr()
4591 		dm_integrity_free_journal_scatterlist(ic, ic->journal_scatterlist);  in dm_integrity_dtr()
4592 	if (ic->journal_io_scatterlist)  in dm_integrity_dtr()
4593 		dm_integrity_free_journal_scatterlist(ic, ic->journal_io_scatterlist);  in dm_integrity_dtr()
4594 	if (ic->sk_requests) {  in dm_integrity_dtr()
4597 		for (i = 0; i < ic->journal_sections; i++) {  in dm_integrity_dtr()
4598 			struct skcipher_request *req = ic->sk_requests[i];  in dm_integrity_dtr()
4604 		kvfree(ic->sk_requests);  in dm_integrity_dtr()
4606 	kvfree(ic->journal_tree);  in dm_integrity_dtr()
4607 	if (ic->sb)  in dm_integrity_dtr()
4608 		free_pages_exact(ic->sb, SB_SECTORS << SECTOR_SHIFT);  in dm_integrity_dtr()
4610 	if (ic->internal_hash)  in dm_integrity_dtr()
4611 		crypto_free_shash(ic->internal_hash);  in dm_integrity_dtr()
4612 	free_alg(&ic->internal_hash_alg);  in dm_integrity_dtr()
4614 	if (ic->journal_crypt)  in dm_integrity_dtr()
4615 		crypto_free_skcipher(ic->journal_crypt);  in dm_integrity_dtr()
4616 	free_alg(&ic->journal_crypt_alg);  in dm_integrity_dtr()
4618 	if (ic->journal_mac)  in dm_integrity_dtr()
4619 		crypto_free_shash(ic->journal_mac);  in dm_integrity_dtr()
4620 	free_alg(&ic->journal_mac_alg);  in dm_integrity_dtr()
4622 	kfree(ic);  in dm_integrity_dtr()