99 #define journal_entry_tag(ic, je)		((__u8 *)&(je)->last_bytes[(ic)->sectors_per_block])  argument
290 	struct dm_integrity_c *ic;  member
308 	struct dm_integrity_c *ic;  member
320 	struct dm_integrity_c *ic;  member
378 static void dm_integrity_io_error(struct dm_integrity_c *ic, const char *msg, int err)  in dm_integrity_io_error()  argument
381 		atomic64_inc(&ic->number_of_mismatches);  in dm_integrity_io_error()
382 	if (!cmpxchg(&ic->failed, 0, err))  in dm_integrity_io_error()
386 static int dm_integrity_failed(struct dm_integrity_c *ic)  in dm_integrity_failed()  argument
388 	return READ_ONCE(ic->failed);  in dm_integrity_failed()
391 static bool dm_integrity_disable_recalculate(struct dm_integrity_c *ic)  in dm_integrity_disable_recalculate()  argument
393 	if ((ic->internal_hash_alg.key || ic->journal_mac_alg.key) &&  in dm_integrity_disable_recalculate()
394 	    !ic->legacy_recalculate)  in dm_integrity_disable_recalculate()
399 static commit_id_t dm_integrity_commit_id(struct dm_integrity_c *ic, unsigned i,  in dm_integrity_commit_id()  argument
406 	return ic->commit_ids[seq] ^ cpu_to_le64(((__u64)i << 32) ^ j);  in dm_integrity_commit_id()
409 static void get_area_and_offset(struct dm_integrity_c *ic, sector_t data_sector,  in get_area_and_offset()  argument
412 	if (!ic->meta_dev) {  in get_area_and_offset()
413 		__u8 log2_interleave_sectors = ic->sb->log2_interleave_sectors;  in get_area_and_offset()
422 #define sector_to_block(ic, n)						\  argument
424 	BUG_ON((n) & (unsigned)((ic)->sectors_per_block - 1));		\
425 	(n) >>= (ic)->sb->log2_sectors_per_block;			\
428 static __u64 get_metadata_sector_and_offset(struct dm_integrity_c *ic, sector_t area,  in get_metadata_sector_and_offset()  argument
434 	ms = area << ic->sb->log2_interleave_sectors;  in get_metadata_sector_and_offset()
435 	if (likely(ic->log2_metadata_run >= 0))  in get_metadata_sector_and_offset()
436 		ms += area << ic->log2_metadata_run;  in get_metadata_sector_and_offset()
438 		ms += area * ic->metadata_run;  in get_metadata_sector_and_offset()
439 	ms >>= ic->log2_buffer_sectors;  in get_metadata_sector_and_offset()
441 	sector_to_block(ic, offset);  in get_metadata_sector_and_offset()
443 	if (likely(ic->log2_tag_size >= 0)) {  in get_metadata_sector_and_offset()
444 		ms += offset >> (SECTOR_SHIFT + ic->log2_buffer_sectors - ic->log2_tag_size);  in get_metadata_sector_and_offset()
445 		mo = (offset << ic->log2_tag_size) & ((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - 1);  in get_metadata_sector_and_offset()
447 		ms += (__u64)offset * ic->tag_size >> (SECTOR_SHIFT + ic->log2_buffer_sectors);  in get_metadata_sector_and_offset()
448 		mo = (offset * ic->tag_size) & ((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - 1);  in get_metadata_sector_and_offset()
454 static sector_t get_data_sector(struct dm_integrity_c *ic, sector_t area, sector_t offset)  in get_data_sector()  argument
458 	if (ic->meta_dev)  in get_data_sector()
461 	result = area << ic->sb->log2_interleave_sectors;  in get_data_sector()
462 	if (likely(ic->log2_metadata_run >= 0))  in get_data_sector()
463 		result += (area + 1) << ic->log2_metadata_run;  in get_data_sector()
465 		result += (area + 1) * ic->metadata_run;  in get_data_sector()
467 	result += (sector_t)ic->initial_sectors + offset;  in get_data_sector()
468 	result += ic->start;  in get_data_sector()
473 static void wraparound_section(struct dm_integrity_c *ic, unsigned *sec_ptr)  in wraparound_section()  argument
475 	if (unlikely(*sec_ptr >= ic->journal_sections))  in wraparound_section()
476 		*sec_ptr -= ic->journal_sections;  in wraparound_section()
479 static void sb_set_version(struct dm_integrity_c *ic)  in sb_set_version()  argument
481 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING))  in sb_set_version()
482 		ic->sb->version = SB_VERSION_4;  in sb_set_version()
483 	else if (ic->mode == 'B' || ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP))  in sb_set_version()
484 		ic->sb->version = SB_VERSION_3;  in sb_set_version()
485 	else if (ic->meta_dev || ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in sb_set_version()
486 		ic->sb->version = SB_VERSION_2;  in sb_set_version()
488 		ic->sb->version = SB_VERSION_1;  in sb_set_version()
491 static int sync_rw_sb(struct dm_integrity_c *ic, int op, int op_flags)  in sync_rw_sb()  argument
499 	io_req.mem.ptr.addr = ic->sb;  in sync_rw_sb()
501 	io_req.client = ic->io;  in sync_rw_sb()
502 	io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev;  in sync_rw_sb()
503 	io_loc.sector = ic->start;  in sync_rw_sb()
507 		sb_set_version(ic);  in sync_rw_sb()
517 static bool block_bitmap_op(struct dm_integrity_c *ic, struct page_list *bitmap,  in block_bitmap_op()  argument
523 	if (unlikely(((sector | n_sectors) & ((1 << ic->sb->log2_sectors_per_block) - 1)) != 0)) {  in block_bitmap_op()
527 			ic->sb->log2_sectors_per_block,  in block_bitmap_op()
528 			ic->log2_blocks_per_bitmap_bit,  in block_bitmap_op()
536 	bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in block_bitmap_op()
538 		(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in block_bitmap_op()
622 static void block_bitmap_copy(struct dm_integrity_c *ic, struct page_list *dst, struct page_list *s…  in block_bitmap_copy()  argument
624 	unsigned n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE);  in block_bitmap_copy()
634 static struct bitmap_block_status *sector_to_bitmap_block(struct dm_integrity_c *ic, sector_t secto…  in sector_to_bitmap_block()  argument
636 	unsigned bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in sector_to_bitmap_block()
639 	BUG_ON(bitmap_block >= ic->n_bitmap_blocks);  in sector_to_bitmap_block()
640 	return &ic->bbs[bitmap_block];  in sector_to_bitmap_block()
643 static void access_journal_check(struct dm_integrity_c *ic, unsigned section, unsigned offset,  in access_journal_check()  argument
647 	unsigned limit = e ? ic->journal_section_entries : ic->journal_section_sectors;  in access_journal_check()
649 	if (unlikely(section >= ic->journal_sections) ||  in access_journal_check()
652 		       function, section, offset, ic->journal_sections, limit);  in access_journal_check()
658 static void page_list_location(struct dm_integrity_c *ic, unsigned section, unsigned offset,  in page_list_location()  argument
663 	access_journal_check(ic, section, offset, false, "page_list_location");  in page_list_location()
665 	sector = section * ic->journal_section_sectors + offset;  in page_list_location()
671 static struct journal_sector *access_page_list(struct dm_integrity_c *ic, struct page_list *pl,  in access_page_list()  argument
677 	page_list_location(ic, section, offset, &pl_index, &pl_offset);  in access_page_list()
687 static struct journal_sector *access_journal(struct dm_integrity_c *ic, unsigned section, unsigned …  in access_journal()  argument
689 	return access_page_list(ic, ic->journal, section, offset, NULL);  in access_journal()
692 static struct journal_entry *access_journal_entry(struct dm_integrity_c *ic, unsigned section, unsi…  in access_journal_entry()  argument
697 	access_journal_check(ic, section, n, true, "access_journal_entry");  in access_journal_entry()
702 	js = access_journal(ic, section, rel_sector);  in access_journal_entry()
703 	return (struct journal_entry *)((char *)js + offset * ic->journal_entry_size);  in access_journal_entry()
706 static struct journal_sector *access_journal_data(struct dm_integrity_c *ic, unsigned section, unsi…  in access_journal_data()  argument
708 	n <<= ic->sb->log2_sectors_per_block;  in access_journal_data()
712 	access_journal_check(ic, section, n, false, "access_journal_data");  in access_journal_data()
714 	return access_journal(ic, section, n);  in access_journal_data()
717 static void section_mac(struct dm_integrity_c *ic, unsigned section, __u8 result[JOURNAL_MAC_SIZE])  in section_mac()  argument
719 	SHASH_DESC_ON_STACK(desc, ic->journal_mac);  in section_mac()
723 	desc->tfm = ic->journal_mac;  in section_mac()
727 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in section_mac()
731 	for (j = 0; j < ic->journal_section_entries; j++) {  in section_mac()
732 		struct journal_entry *je = access_journal_entry(ic, section, j);  in section_mac()
735 			dm_integrity_io_error(ic, "crypto_shash_update", r);  in section_mac()
740 	size = crypto_shash_digestsize(ic->journal_mac);  in section_mac()
745 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in section_mac()
753 			dm_integrity_io_error(ic, "digest_size", -EINVAL);  in section_mac()
758 			dm_integrity_io_error(ic, "crypto_shash_final", r);  in section_mac()
769 static void rw_section_mac(struct dm_integrity_c *ic, unsigned section, bool wr)  in rw_section_mac()  argument
774 	if (!ic->journal_mac)  in rw_section_mac()
777 	section_mac(ic, section, result);  in rw_section_mac()
780 		struct journal_sector *js = access_journal(ic, section, j);  in rw_section_mac()
786 				dm_integrity_io_error(ic, "journal mac", -EILSEQ);  in rw_section_mac()
799 static void xor_journal(struct dm_integrity_c *ic, bool encrypt, unsigned section,  in xor_journal()  argument
803 	size_t n_bytes = (size_t)(n_sections * ic->journal_section_sectors) << SECTOR_SHIFT;  in xor_journal()
808 		source_pl = ic->journal;  in xor_journal()
809 		target_pl = ic->journal_io;  in xor_journal()
811 		source_pl = ic->journal_io;  in xor_journal()
812 		target_pl = ic->journal;  in xor_journal()
815 	page_list_location(ic, section, 0, &pl_index, &pl_offset);  in xor_journal()
831 				rw_section_mac(ic, section, true);  in xor_journal()
836 			page_list_location(ic, section, 0, &section_index, &dummy);  in xor_journal()
842 		src_pages[1] = ic->journal_xor[pl_index].page;  in xor_journal()
861 			complete(&comp->ic->crypto_backoff);  in complete_journal_encrypt()
864 		dm_integrity_io_error(comp->ic, "asynchronous encrypt", err);  in complete_journal_encrypt()
883 		wait_for_completion(&comp->ic->crypto_backoff);  in do_crypt()
884 		reinit_completion(&comp->ic->crypto_backoff);  in do_crypt()
887 	dm_integrity_io_error(comp->ic, "encrypt", r);  in do_crypt()
891 static void crypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned section,  in crypt_journal()  argument
900 		source_sg = ic->journal_scatterlist;  in crypt_journal()
901 		target_sg = ic->journal_io_scatterlist;  in crypt_journal()
903 		source_sg = ic->journal_io_scatterlist;  in crypt_journal()
904 		target_sg = ic->journal_scatterlist;  in crypt_journal()
913 			rw_section_mac(ic, section, true);  in crypt_journal()
915 		req = ic->sk_requests[section];  in crypt_journal()
916 		ivsize = crypto_skcipher_ivsize(ic->journal_crypt);  in crypt_journal()
935 static void encrypt_journal(struct dm_integrity_c *ic, bool encrypt, unsigned section,  in encrypt_journal()  argument
938 	if (ic->journal_xor)  in encrypt_journal()
939 		return xor_journal(ic, encrypt, section, n_sections, comp);  in encrypt_journal()
941 		return crypt_journal(ic, encrypt, section, n_sections, comp);  in encrypt_journal()
948 		dm_integrity_io_error(comp->ic, "writing journal", -EIO);  in complete_journal_io()
952 static void rw_journal_sectors(struct dm_integrity_c *ic, int op, int op_flags,  in rw_journal_sectors()  argument
960 	if (unlikely(dm_integrity_failed(ic))) {  in rw_journal_sectors()
972 	if (ic->journal_io)  in rw_journal_sectors()
973 		io_req.mem.ptr.pl = &ic->journal_io[pl_index];  in rw_journal_sectors()
975 		io_req.mem.ptr.pl = &ic->journal[pl_index];  in rw_journal_sectors()
983 	io_req.client = ic->io;  in rw_journal_sectors()
984 	io_loc.bdev = ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev;  in rw_journal_sectors()
985 	io_loc.sector = ic->start + SB_SECTORS + sector;  in rw_journal_sectors()
990 		dm_integrity_io_error(ic, op == REQ_OP_READ ? "reading journal" : "writing journal", r);  in rw_journal_sectors()
998 static void rw_journal(struct dm_integrity_c *ic, int op, int op_flags, unsigned section,  in rw_journal()  argument
1003 	sector = section * ic->journal_section_sectors;  in rw_journal()
1004 	n_sectors = n_sections * ic->journal_section_sectors;  in rw_journal()
1006 	rw_journal_sectors(ic, op, op_flags, sector, n_sectors, comp);  in rw_journal()
1009 static void write_journal(struct dm_integrity_c *ic, unsigned commit_start, unsigned commit_section…  in write_journal()  argument
1016 	io_comp.ic = ic;  in write_journal()
1019 	if (commit_start + commit_sections <= ic->journal_sections) {  in write_journal()
1021 		if (ic->journal_io) {  in write_journal()
1022 			crypt_comp_1.ic = ic;  in write_journal()
1025 			encrypt_journal(ic, true, commit_start, commit_sections, &crypt_comp_1);  in write_journal()
1029 				rw_section_mac(ic, commit_start + i, true);  in write_journal()
1031 		rw_journal(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, commit_start,  in write_journal()
1036 		to_end = ic->journal_sections - commit_start;  in write_journal()
1037 		if (ic->journal_io) {  in write_journal()
1038 			crypt_comp_1.ic = ic;  in write_journal()
1041 			encrypt_journal(ic, true, commit_start, to_end, &crypt_comp_1);  in write_journal()
1043 				rw_journal(ic, REQ_OP_WRITE, REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1046 				encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_1);  in write_journal()
1049 				crypt_comp_2.ic = ic;  in write_journal()
1052 				encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_2);  in write_journal()
1054 				rw_journal(ic, REQ_OP_WRITE, REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1059 				rw_section_mac(ic, commit_start + i, true);  in write_journal()
1060 			rw_journal(ic, REQ_OP_WRITE, REQ_FUA, commit_start, to_end, &io_comp);  in write_journal()
1062 				rw_section_mac(ic, i, true);  in write_journal()
1064 		rw_journal(ic, REQ_OP_WRITE, REQ_FUA, 0, commit_sections - to_end, &io_comp);  in write_journal()
1070 static void copy_from_journal(struct dm_integrity_c *ic, unsigned section, unsigned offset,  in copy_from_journal()  argument
1078 	BUG_ON((target | n_sectors | offset) & (unsigned)(ic->sectors_per_block - 1));  in copy_from_journal()
1080 	if (unlikely(dm_integrity_failed(ic))) {  in copy_from_journal()
1085 	sector = section * ic->journal_section_sectors + JOURNAL_BLOCK_SECTORS + offset;  in copy_from_journal()
1093 	io_req.mem.ptr.pl = &ic->journal[pl_index];  in copy_from_journal()
1097 	io_req.client = ic->io;  in copy_from_journal()
1098 	io_loc.bdev = ic->dev->bdev;  in copy_from_journal()
1115 static bool add_new_range(struct dm_integrity_c *ic, struct dm_integrity_range *new_range, bool che…  in add_new_range()  argument
1117 	struct rb_node **n = &ic->in_progress.rb_node;  in add_new_range()
1120 	BUG_ON((new_range->logical_sector | new_range->n_sectors) & (unsigned)(ic->sectors_per_block - 1));  in add_new_range()
1124 		list_for_each_entry(range, &ic->wait_list, wait_entry) {  in add_new_range()
1146 	rb_insert_color(&new_range->node, &ic->in_progress);  in add_new_range()
1151 static void remove_range_unlocked(struct dm_integrity_c *ic, struct dm_integrity_range *range)  in remove_range_unlocked()  argument
1153 	rb_erase(&range->node, &ic->in_progress);  in remove_range_unlocked()
1154 	while (unlikely(!list_empty(&ic->wait_list))) {  in remove_range_unlocked()
1156 			list_first_entry(&ic->wait_list, struct dm_integrity_range, wait_entry);  in remove_range_unlocked()
1160 		if (!add_new_range(ic, last_range, false)) {  in remove_range_unlocked()
1162 			list_add(&last_range->wait_entry, &ic->wait_list);  in remove_range_unlocked()
1170 static void remove_range(struct dm_integrity_c *ic, struct dm_integrity_range *range)  in remove_range()  argument
1174 	spin_lock_irqsave(&ic->endio_wait.lock, flags);  in remove_range()
1175 	remove_range_unlocked(ic, range);  in remove_range()
1176 	spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in remove_range()
1179 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
1182 	list_add_tail(&new_range->wait_entry, &ic->wait_list);  in wait_and_add_new_range()
1186 		spin_unlock_irq(&ic->endio_wait.lock);  in wait_and_add_new_range()
1188 		spin_lock_irq(&ic->endio_wait.lock);  in wait_and_add_new_range()
1192 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
1194 	if (unlikely(!add_new_range(ic, new_range, true)))  in add_new_range_and_wait()
1195 		wait_and_add_new_range(ic, new_range);  in add_new_range_and_wait()
1204 static void add_journal_node(struct dm_integrity_c *ic, struct journal_node *node, sector_t sector)  in add_journal_node()  argument
1212 	link = &ic->journal_tree_root.rb_node;  in add_journal_node()
1226 	rb_insert_color(&node->node, &ic->journal_tree_root);  in add_journal_node()
1229 static void remove_journal_node(struct dm_integrity_c *ic, struct journal_node *node)  in remove_journal_node()  argument
1232 	rb_erase(&node->node, &ic->journal_tree_root);  in remove_journal_node()
1238 static unsigned find_journal_node(struct dm_integrity_c *ic, sector_t sector, sector_t *next_sector)  in find_journal_node()  argument
1240 	struct rb_node *n = ic->journal_tree_root.rb_node;  in find_journal_node()
1246 			found = j - ic->journal_tree;  in find_journal_node()
1259 static bool test_journal_node(struct dm_integrity_c *ic, unsigned pos, sector_t sector)  in test_journal_node()  argument
1264 	if (unlikely(pos >= ic->journal_entries))  in test_journal_node()
1266 	node = &ic->journal_tree[pos];  in test_journal_node()
1280 static bool find_newer_committed_node(struct dm_integrity_c *ic, struct journal_node *node)  in find_newer_committed_node()  argument
1297 	next_section = (unsigned)(next_node - ic->journal_tree) / ic->journal_section_entries;  in find_newer_committed_node()
1298 	if (next_section >= ic->committed_section &&  in find_newer_committed_node()
1299 	    next_section < ic->committed_section + ic->n_committed_sections)  in find_newer_committed_node()
1301 	if (next_section + ic->journal_sections < ic->committed_section + ic->n_committed_sections)  in find_newer_committed_node()
1311 static int dm_integrity_rw_tag(struct dm_integrity_c *ic, unsigned char *tag, sector_t *metadata_bl…  in dm_integrity_rw_tag()  argument
1317 	unsigned may_be = MAY_BE_HASH | (ic->discard ? MAY_BE_FILLER : 0);  in dm_integrity_rw_tag()
1325 		r = dm_integrity_failed(ic);  in dm_integrity_rw_tag()
1329 		data = dm_bufio_read(ic->bufio, *metadata_block, &b);  in dm_integrity_rw_tag()
1333 		to_copy = min((1U << SECTOR_SHIFT << ic->log2_buffer_sectors) - *metadata_offset, total_size);  in dm_integrity_rw_tag()
1343 			if (likely(is_power_of_2(ic->tag_size))) {  in dm_integrity_rw_tag()
1345 					if (unlikely(!ic->discard) ||  in dm_integrity_rw_tag()
1360 					if (unlikely(hash_offset == ic->tag_size)) {  in dm_integrity_rw_tag()
1366 						may_be = MAY_BE_HASH | (ic->discard ? MAY_BE_FILLER : 0);  in dm_integrity_rw_tag()
1375 		if (unlikely(*metadata_offset == 1U << SECTOR_SHIFT << ic->log2_buffer_sectors)) {  in dm_integrity_rw_tag()
1380 		if (unlikely(!is_power_of_2(ic->tag_size))) {  in dm_integrity_rw_tag()
1381 			hash_offset = (hash_offset + to_copy) % ic->tag_size;  in dm_integrity_rw_tag()
1395 	struct dm_integrity_c *ic;  member
1403 		dm_integrity_io_error(fr->ic, "flusing disk cache", -EIO);  in flush_notify()
1407 static void dm_integrity_flush_buffers(struct dm_integrity_c *ic, bool flush_data)  in dm_integrity_flush_buffers()  argument
1413 	if (!ic->meta_dev)  in dm_integrity_flush_buffers()
1422 		fr.io_req.client = dm_bufio_get_dm_io_client(ic->bufio),  in dm_integrity_flush_buffers()
1423 		fr.io_reg.bdev = ic->dev->bdev,  in dm_integrity_flush_buffers()
1426 		fr.ic = ic;  in dm_integrity_flush_buffers()
1432 	r = dm_bufio_write_dirty_buffers(ic->bufio);  in dm_integrity_flush_buffers()
1434 		dm_integrity_io_error(ic, "writing tags", r);  in dm_integrity_flush_buffers()
1440 static void sleep_on_endio_wait(struct dm_integrity_c *ic)  in sleep_on_endio_wait()  argument
1443 	__add_wait_queue(&ic->endio_wait, &wait);  in sleep_on_endio_wait()
1445 	spin_unlock_irq(&ic->endio_wait.lock);  in sleep_on_endio_wait()
1447 	spin_lock_irq(&ic->endio_wait.lock);  in sleep_on_endio_wait()
1448 	__remove_wait_queue(&ic->endio_wait, &wait);  in sleep_on_endio_wait()
1453 	struct dm_integrity_c *ic = from_timer(ic, t, autocommit_timer);  in autocommit_fn()  local
1455 	if (likely(!dm_integrity_failed(ic)))  in autocommit_fn()
1456 		queue_work(ic->commit_wq, &ic->commit_work);  in autocommit_fn()
1459 static void schedule_autocommit(struct dm_integrity_c *ic)  in schedule_autocommit()  argument
1461 	if (!timer_pending(&ic->autocommit_timer))  in schedule_autocommit()
1462 		mod_timer(&ic->autocommit_timer, jiffies + ic->autocommit_jiffies);  in schedule_autocommit()
1465 static void submit_flush_bio(struct dm_integrity_c *ic, struct dm_integrity_io *dio)  in submit_flush_bio()  argument
1470 	spin_lock_irqsave(&ic->endio_wait.lock, flags);  in submit_flush_bio()
1472 	bio_list_add(&ic->flush_bio_list, bio);  in submit_flush_bio()
1473 	spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in submit_flush_bio()
1475 	queue_work(ic->commit_wq, &ic->commit_work);  in submit_flush_bio()
1478 static void do_endio(struct dm_integrity_c *ic, struct bio *bio)  in do_endio()  argument
1480 	int r = dm_integrity_failed(ic);  in do_endio()
1483 	if (unlikely(ic->synchronous_mode) && bio_op(bio) == REQ_OP_WRITE) {  in do_endio()
1485 		spin_lock_irqsave(&ic->endio_wait.lock, flags);  in do_endio()
1486 		bio_list_add(&ic->synchronous_bios, bio);  in do_endio()
1487 		queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in do_endio()
1488 		spin_unlock_irqrestore(&ic->endio_wait.lock, flags);  in do_endio()
1494 static void do_endio_flush(struct dm_integrity_c *ic, struct dm_integrity_io *dio)  in do_endio_flush()  argument
1498 	if (unlikely(dio->fua) && likely(!bio->bi_status) && likely(!dm_integrity_failed(ic)))  in do_endio_flush()
1499 		submit_flush_bio(ic, dio);  in do_endio_flush()
1501 		do_endio(ic, bio);  in do_endio_flush()
1507 		struct dm_integrity_c *ic = dio->ic;  in dec_in_flight()  local
1510 		remove_range(ic, &dio->range);  in dec_in_flight()
1513 			schedule_autocommit(ic);  in dec_in_flight()
1523 			queue_work(ic->offload_wq, &dio->work);  in dec_in_flight()
1526 		do_endio_flush(ic, dio);  in dec_in_flight()
1544 static void integrity_sector_checksum(struct dm_integrity_c *ic, sector_t sector,  in integrity_sector_checksum()  argument
1548 	SHASH_DESC_ON_STACK(req, ic->internal_hash);  in integrity_sector_checksum()
1552 	req->tfm = ic->internal_hash;  in integrity_sector_checksum()
1556 		dm_integrity_io_error(ic, "crypto_shash_init", r);  in integrity_sector_checksum()
1562 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1566 	r = crypto_shash_update(req, data, ic->sectors_per_block << SECTOR_SHIFT);  in integrity_sector_checksum()
1568 		dm_integrity_io_error(ic, "crypto_shash_update", r);  in integrity_sector_checksum()
1574 		dm_integrity_io_error(ic, "crypto_shash_final", r);  in integrity_sector_checksum()
1578 	digest_size = crypto_shash_digestsize(ic->internal_hash);  in integrity_sector_checksum()
1579 	if (unlikely(digest_size < ic->tag_size))  in integrity_sector_checksum()
1580 		memset(result + digest_size, 0, ic->tag_size - digest_size);  in integrity_sector_checksum()
1586 	get_random_bytes(result, ic->tag_size);  in integrity_sector_checksum()
1592 	struct dm_integrity_c *ic = dio->ic;  in integrity_metadata()  local
1596 	if (ic->internal_hash) {  in integrity_metadata()
1599 		unsigned digest_size = crypto_shash_digestsize(ic->internal_hash);  in integrity_metadata()
1602 		unsigned extra_space = unlikely(digest_size > ic->tag_size) ? digest_size - ic->tag_size : 0;  in integrity_metadata()
1607 		if (unlikely(ic->mode == 'R'))  in integrity_metadata()
1611 …checksums = kmalloc((PAGE_SIZE >> SECTOR_SHIFT >> ic->sb->log2_sectors_per_block) * ic->tag_size +…  in integrity_metadata()
1628 			unsigned max_blocks = max_size / ic->tag_size;  in integrity_metadata()
1632 				unsigned this_step_blocks = bi_size >> (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);  in integrity_metadata()
1634 				r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1635 							this_step_blocks * ic->tag_size, TAG_WRITE);  in integrity_metadata()
1642 				/*if (bi_size < this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block)) {  in integrity_metadata()
1647 				bi_size -= this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);  in integrity_metadata()
1648 				bi_sector += this_step_blocks << ic->sb->log2_sectors_per_block;  in integrity_metadata()
1669 				integrity_sector_checksum(ic, sector, mem + pos, checksums_ptr);  in integrity_metadata()
1670 				checksums_ptr += ic->tag_size;  in integrity_metadata()
1671 				sectors_to_process -= ic->sectors_per_block;  in integrity_metadata()
1672 				pos += ic->sectors_per_block << SECTOR_SHIFT;  in integrity_metadata()
1673 				sector += ic->sectors_per_block;  in integrity_metadata()
1677 			r = dm_integrity_rw_tag(ic, checksums, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1683 						    (sector - ((r + ic->tag_size - 1) / ic->tag_size)));  in integrity_metadata()
1685 					atomic64_inc(&ic->number_of_mismatches);  in integrity_metadata()
1711 			sector_to_block(ic, data_to_process);  in integrity_metadata()
1712 			data_to_process *= ic->tag_size;  in integrity_metadata()
1721 				r = dm_integrity_rw_tag(ic, tag, &dio->metadata_block, &dio->metadata_offset,  in integrity_metadata()
1741 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_map()  local
1747 	dio->ic = ic;  in dm_integrity_map()
1765 		submit_flush_bio(ic, dio);  in dm_integrity_map()
1778 	if (unlikely(dio->range.logical_sector + bio_sectors(bio) > ic->provided_data_sectors)) {  in dm_integrity_map()
1781 		      ic->provided_data_sectors);  in dm_integrity_map()
1784 …if (unlikely((dio->range.logical_sector | bio_sectors(bio)) & (unsigned)(ic->sectors_per_block - 1…  in dm_integrity_map()
1786 		      ic->sectors_per_block,  in dm_integrity_map()
1791 	if (ic->sectors_per_block > 1 && likely(dio->op != REQ_OP_DISCARD)) {  in dm_integrity_map()
1795 			if (unlikely(bv.bv_len & ((ic->sectors_per_block << SECTOR_SHIFT) - 1))) {  in dm_integrity_map()
1797 					bv.bv_offset, bv.bv_len, ic->sectors_per_block);  in dm_integrity_map()
1804 	if (!ic->internal_hash) {  in dm_integrity_map()
1806 			unsigned wanted_tag_size = bio_sectors(bio) >> ic->sb->log2_sectors_per_block;  in dm_integrity_map()
1807 			if (ic->log2_tag_size >= 0)  in dm_integrity_map()
1808 				wanted_tag_size <<= ic->log2_tag_size;  in dm_integrity_map()
1810 				wanted_tag_size *= ic->tag_size;  in dm_integrity_map()
1824 	if (unlikely(ic->mode == 'R') && unlikely(dio->op != REQ_OP_READ))  in dm_integrity_map()
1827 	get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in dm_integrity_map()
1828 	dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset);  in dm_integrity_map()
1829 	bio->bi_iter.bi_sector = get_data_sector(ic, area, offset);  in dm_integrity_map()
1838 	struct dm_integrity_c *ic = dio->ic;  in __journal_read_write()  local
1858 			struct journal_entry *je = access_journal_entry(ic, journal_section, journal_entry);  in __journal_read_write()
1869 					__io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je));  in __journal_read_write()
1874 				js = access_journal_data(ic, journal_section, journal_entry);  in __journal_read_write()
1882 				} while (++s < ic->sectors_per_block);  in __journal_read_write()
1884 				if (ic->internal_hash) {  in __journal_read_write()
1887 					integrity_sector_checksum(ic, logical_sector, mem + bv.bv_offset, checksums_onstack);  in __journal_read_write()
1888 					if (unlikely(memcmp(checksums_onstack, journal_entry_tag(ic, je), ic->tag_size))) {  in __journal_read_write()
1896 			if (!ic->internal_hash) {  in __journal_read_write()
1898 				unsigned tag_todo = ic->tag_size;  in __journal_read_write()
1899 				char *tag_ptr = journal_entry_tag(ic, je);  in __journal_read_write()
1924 				js = access_journal_data(ic, journal_section, journal_entry);  in __journal_read_write()
1925 				memcpy(js, mem + bv.bv_offset, ic->sectors_per_block << SECTOR_SHIFT);  in __journal_read_write()
1930 				} while (++s < ic->sectors_per_block);  in __journal_read_write()
1932 				if (ic->internal_hash) {  in __journal_read_write()
1933 					unsigned digest_size = crypto_shash_digestsize(ic->internal_hash);  in __journal_read_write()
1934 					if (unlikely(digest_size > ic->tag_size)) {  in __journal_read_write()
1936 						integrity_sector_checksum(ic, logical_sector, (char *)js, checksums_onstack);  in __journal_read_write()
1937 						memcpy(journal_entry_tag(ic, je), checksums_onstack, ic->tag_size);  in __journal_read_write()
1939 						integrity_sector_checksum(ic, logical_sector, (char *)js, journal_entry_tag(ic, je));  in __journal_read_write()
1944 			logical_sector += ic->sectors_per_block;  in __journal_read_write()
1947 			if (unlikely(journal_entry == ic->journal_section_entries)) {  in __journal_read_write()
1950 				wraparound_section(ic, &journal_section);  in __journal_read_write()
1953 			bv.bv_offset += ic->sectors_per_block << SECTOR_SHIFT;  in __journal_read_write()
1954 		} while (bv.bv_len -= ic->sectors_per_block << SECTOR_SHIFT);  in __journal_read_write()
1963 		if (unlikely(waitqueue_active(&ic->copy_to_journal_wait)))  in __journal_read_write()
1964 			wake_up(&ic->copy_to_journal_wait);  in __journal_read_write()
1965 		if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold) {  in __journal_read_write()
1966 			queue_work(ic->commit_wq, &ic->commit_work);  in __journal_read_write()
1968 			schedule_autocommit(ic);  in __journal_read_write()
1971 		remove_range(ic, &dio->range);  in __journal_read_write()
1978 		get_area_and_offset(ic, dio->range.logical_sector, &area, &offset);  in __journal_read_write()
1979 		dio->metadata_block = get_metadata_sector_and_offset(ic, area, offset, &dio->metadata_offset);  in __journal_read_write()
1988 	struct dm_integrity_c *ic = dio->ic;  in dm_integrity_map_continue()  local
1994 	bool need_sync_io = ic->internal_hash && dio->op == REQ_OP_READ;  in dm_integrity_map_continue()
1995 	if (unlikely(dio->op == REQ_OP_DISCARD) && ic->mode != 'D')  in dm_integrity_map_continue()
2000 		queue_work(ic->offload_wq, &dio->work);  in dm_integrity_map_continue()
2005 	spin_lock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2007 	if (unlikely(dm_integrity_failed(ic))) {  in dm_integrity_map_continue()
2008 		spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2009 		do_endio(ic, bio);  in dm_integrity_map_continue()
2014 	if (ic->mode == 'J' && likely(dio->op != REQ_OP_DISCARD)) {  in dm_integrity_map_continue()
2020 						   (sector_t)ic->free_sectors << ic->sb->log2_sectors_per_block);  in dm_integrity_map_continue()
2024 				sleep_on_endio_wait(ic);  in dm_integrity_map_continue()
2027 			range_sectors = dio->range.n_sectors >> ic->sb->log2_sectors_per_block;  in dm_integrity_map_continue()
2028 			ic->free_sectors -= range_sectors;  in dm_integrity_map_continue()
2029 			journal_section = ic->free_section;  in dm_integrity_map_continue()
2030 			journal_entry = ic->free_section_entry;  in dm_integrity_map_continue()
2032 			next_entry = ic->free_section_entry + range_sectors;  in dm_integrity_map_continue()
2033 			ic->free_section_entry = next_entry % ic->journal_section_entries;  in dm_integrity_map_continue()
2034 			ic->free_section += next_entry / ic->journal_section_entries;  in dm_integrity_map_continue()
2035 			ic->n_uncommitted_sections += next_entry / ic->journal_section_entries;  in dm_integrity_map_continue()
2036 			wraparound_section(ic, &ic->free_section);  in dm_integrity_map_continue()
2038 			pos = journal_section * ic->journal_section_entries + journal_entry;  in dm_integrity_map_continue()
2045 				add_journal_node(ic, &ic->journal_tree[pos], dio->range.logical_sector + i);  in dm_integrity_map_continue()
2047 				if (unlikely(pos >= ic->journal_entries))  in dm_integrity_map_continue()
2050 				je = access_journal_entry(ic, ws, we);  in dm_integrity_map_continue()
2054 				if (unlikely(we == ic->journal_section_entries)) {  in dm_integrity_map_continue()
2057 					wraparound_section(ic, &ws);  in dm_integrity_map_continue()
2059 			} while ((i += ic->sectors_per_block) < dio->range.n_sectors);  in dm_integrity_map_continue()
2061 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2065 			journal_read_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2072 				for (i = ic->sectors_per_block; i < dio->range.n_sectors; i += ic->sectors_per_block, jp++) {  in dm_integrity_map_continue()
2073 					if (!test_journal_node(ic, jp, dio->range.logical_sector + i))  in dm_integrity_map_continue()
2080 	if (unlikely(!add_new_range(ic, &dio->range, true))) {  in dm_integrity_map_continue()
2088 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2090 			queue_work(ic->wait_wq, &dio->work);  in dm_integrity_map_continue()
2094 			dio->range.n_sectors = ic->sectors_per_block;  in dm_integrity_map_continue()
2095 		wait_and_add_new_range(ic, &dio->range);  in dm_integrity_map_continue()
2103 			unsigned new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2105 				remove_range_unlocked(ic, &dio->range);  in dm_integrity_map_continue()
2110 	if (ic->mode == 'J' && likely(dio->op == REQ_OP_DISCARD) && !discard_retried) {  in dm_integrity_map_continue()
2112 		unsigned new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);  in dm_integrity_map_continue()
2115 			remove_range_unlocked(ic, &dio->range);  in dm_integrity_map_continue()
2116 			spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2117 			queue_work(ic->commit_wq, &ic->commit_work);  in dm_integrity_map_continue()
2118 			flush_workqueue(ic->commit_wq);  in dm_integrity_map_continue()
2119 			queue_work(ic->writer_wq, &ic->writer_work);  in dm_integrity_map_continue()
2120 			flush_workqueue(ic->writer_wq);  in dm_integrity_map_continue()
2125 	spin_unlock_irq(&ic->endio_wait.lock);  in dm_integrity_map_continue()
2128 		journal_section = journal_read_pos / ic->journal_section_entries;  in dm_integrity_map_continue()
2129 		journal_entry = journal_read_pos % ic->journal_section_entries;  in dm_integrity_map_continue()
2133 	if (ic->mode == 'B' && (dio->op == REQ_OP_WRITE || unlikely(dio->op == REQ_OP_DISCARD))) {  in dm_integrity_map_continue()
2134 		if (!block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in dm_integrity_map_continue()
2138 			bbs = sector_to_bitmap_block(ic, dio->range.logical_sector);  in dm_integrity_map_continue()
2142 			queue_work(ic->writer_wq, &bbs->work);  in dm_integrity_map_continue()
2156 	bio_set_dev(bio, ic->dev->bdev);  in dm_integrity_map_continue()
2162 	if (unlikely(dio->op == REQ_OP_DISCARD) && likely(ic->mode != 'D')) {  in dm_integrity_map_continue()
2164 		dm_integrity_flush_buffers(ic, false);  in dm_integrity_map_continue()
2178 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_map_continue()
2179 		    dio->range.logical_sector + dio->range.n_sectors > le64_to_cpu(ic->sb->recalc_sector))  in dm_integrity_map_continue()
2181 		if (ic->mode == 'B') {  in dm_integrity_map_continue()
2182 			if (!block_bitmap_op(ic, ic->recalc_bitmap, dio->range.logical_sector,  in dm_integrity_map_continue()
2195 		queue_work(ic->metadata_wq, &dio->work);  in dm_integrity_map_continue()
2204 	do_endio_flush(ic, dio);  in dm_integrity_map_continue()
2215 static void pad_uncommitted(struct dm_integrity_c *ic)  in pad_uncommitted()  argument
2217 	if (ic->free_section_entry) {  in pad_uncommitted()
2218 		ic->free_sectors -= ic->journal_section_entries - ic->free_section_entry;  in pad_uncommitted()
2219 		ic->free_section_entry = 0;  in pad_uncommitted()
2220 		ic->free_section++;  in pad_uncommitted()
2221 		wraparound_section(ic, &ic->free_section);  in pad_uncommitted()
2222 		ic->n_uncommitted_sections++;  in pad_uncommitted()
2224 	if (WARN_ON(ic->journal_sections * ic->journal_section_entries !=  in pad_uncommitted()
2225 		    (ic->n_uncommitted_sections + ic->n_committed_sections) *  in pad_uncommitted()
2226 		    ic->journal_section_entries + ic->free_sectors)) {  in pad_uncommitted()
2230 		       ic->journal_sections, ic->journal_section_entries,  in pad_uncommitted()
2231 		       ic->n_uncommitted_sections, ic->n_committed_sections,  in pad_uncommitted()
2232 		       ic->journal_section_entries, ic->free_sectors);  in pad_uncommitted()
2238 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, commit_work);  in integrity_commit()  local
2243 	del_timer(&ic->autocommit_timer);  in integrity_commit()
2245 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_commit()
2246 	flushes = bio_list_get(&ic->flush_bio_list);  in integrity_commit()
2247 	if (unlikely(ic->mode != 'J')) {  in integrity_commit()
2248 		spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2249 		dm_integrity_flush_buffers(ic, true);  in integrity_commit()
2253 	pad_uncommitted(ic);  in integrity_commit()
2254 	commit_start = ic->uncommitted_section;  in integrity_commit()
2255 	commit_sections = ic->n_uncommitted_sections;  in integrity_commit()
2256 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2261 	ic->wrote_to_journal = true;  in integrity_commit()
2265 		for (j = 0; j < ic->journal_section_entries; j++) {  in integrity_commit()
2267 			je = access_journal_entry(ic, i, j);  in integrity_commit()
2268 			io_wait_event(ic->copy_to_journal_wait, !journal_entry_is_inprogress(je));  in integrity_commit()
2270 		for (j = 0; j < ic->journal_section_sectors; j++) {  in integrity_commit()
2272 			js = access_journal(ic, i, j);  in integrity_commit()
2273 			js->commit_id = dm_integrity_commit_id(ic, i, j, ic->commit_seq);  in integrity_commit()
2276 		if (unlikely(i >= ic->journal_sections))  in integrity_commit()
2277 			ic->commit_seq = next_commit_seq(ic->commit_seq);  in integrity_commit()
2278 		wraparound_section(ic, &i);  in integrity_commit()
2282 	write_journal(ic, commit_start, commit_sections);  in integrity_commit()
2284 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_commit()
2285 	ic->uncommitted_section += commit_sections;  in integrity_commit()
2286 	wraparound_section(ic, &ic->uncommitted_section);  in integrity_commit()
2287 	ic->n_uncommitted_sections -= commit_sections;  in integrity_commit()
2288 	ic->n_committed_sections += commit_sections;  in integrity_commit()
2289 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_commit()
2291 	if (READ_ONCE(ic->free_sectors) <= ic->free_sectors_threshold)  in integrity_commit()
2292 		queue_work(ic->writer_wq, &ic->writer_work);  in integrity_commit()
2298 		do_endio(ic, flushes);  in integrity_commit()
2307 	struct dm_integrity_c *ic = comp->ic;  in complete_copy_from_journal()  local
2308 	remove_range(ic, &io->range);  in complete_copy_from_journal()
2309 	mempool_free(io, &ic->journal_io_mempool);  in complete_copy_from_journal()
2311 		dm_integrity_io_error(ic, "copying from journal", -EIO);  in complete_copy_from_journal()
2315 static void restore_last_bytes(struct dm_integrity_c *ic, struct journal_sector *js,  in restore_last_bytes()  argument
2322 	} while (++s < ic->sectors_per_block);  in restore_last_bytes()
2325 static void do_journal_write(struct dm_integrity_c *ic, unsigned write_start,  in do_journal_write()  argument
2334 	comp.ic = ic;  in do_journal_write()
2339 	for (n = 0; n < write_sections; n++, i++, wraparound_section(ic, &i)) {  in do_journal_write()
2343 			rw_section_mac(ic, i, false);  in do_journal_write()
2344 		for (j = 0; j < ic->journal_section_entries; j++) {  in do_journal_write()
2345 			struct journal_entry *je = access_journal_entry(ic, i, j);  in do_journal_write()
2357 				if (unlikely(sec & (unsigned)(ic->sectors_per_block - 1))) {  in do_journal_write()
2358 					dm_integrity_io_error(ic, "invalid sector in journal", -EIO);  in do_journal_write()
2359 					sec &= ~(sector_t)(ic->sectors_per_block - 1);  in do_journal_write()
2361 				if (unlikely(sec >= ic->provided_data_sectors)) {  in do_journal_write()
2366 			get_area_and_offset(ic, sec, &area, &offset);  in do_journal_write()
2367 			restore_last_bytes(ic, access_journal_data(ic, i, j), je);  in do_journal_write()
2368 			for (k = j + 1; k < ic->journal_section_entries; k++) {  in do_journal_write()
2369 				struct journal_entry *je2 = access_journal_entry(ic, i, k);  in do_journal_write()
2375 				if (unlikely(sec2 >= ic->provided_data_sectors))  in do_journal_write()
2377 				get_area_and_offset(ic, sec2, &area2, &offset2);  in do_journal_write()
2378 				if (area2 != area || offset2 != offset + ((k - j) << ic->sb->log2_sectors_per_block))  in do_journal_write()
2380 				restore_last_bytes(ic, access_journal_data(ic, i, k), je2);  in do_journal_write()
2384 			io = mempool_alloc(&ic->journal_io_mempool, GFP_NOIO);  in do_journal_write()
2387 			io->range.n_sectors = (k - j) << ic->sb->log2_sectors_per_block;  in do_journal_write()
2389 			spin_lock_irq(&ic->endio_wait.lock);  in do_journal_write()
2390 			add_new_range_and_wait(ic, &io->range);  in do_journal_write()
2393 				struct journal_node *section_node = &ic->journal_tree[i * ic->journal_section_entries];  in do_journal_write()
2396 				while (j < k && find_newer_committed_node(ic, &section_node[j])) {  in do_journal_write()
2397 					struct journal_entry *je2 = access_journal_entry(ic, i, j);  in do_journal_write()
2400 					remove_journal_node(ic, &section_node[j]);  in do_journal_write()
2402 					sec += ic->sectors_per_block;  in do_journal_write()
2403 					offset += ic->sectors_per_block;  in do_journal_write()
2405 				while (j < k && find_newer_committed_node(ic, &section_node[k - 1])) {  in do_journal_write()
2406 					struct journal_entry *je2 = access_journal_entry(ic, i, k - 1);  in do_journal_write()
2409 					remove_journal_node(ic, &section_node[k - 1]);  in do_journal_write()
2413 					remove_range_unlocked(ic, &io->range);  in do_journal_write()
2414 					spin_unlock_irq(&ic->endio_wait.lock);  in do_journal_write()
2415 					mempool_free(io, &ic->journal_io_mempool);  in do_journal_write()
2419 					remove_journal_node(ic, &section_node[l]);  in do_journal_write()
2422 			spin_unlock_irq(&ic->endio_wait.lock);  in do_journal_write()
2424 			metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset);  in do_journal_write()
2427 				struct journal_entry *je2 = access_journal_entry(ic, i, l);  in do_journal_write()
2433 				    ic->internal_hash) {  in do_journal_write()
2436 					integrity_sector_checksum(ic, sec + ((l - j) << ic->sb->log2_sectors_per_block),  in do_journal_write()
2437 								  (char *)access_journal_data(ic, i, l), test_tag);  in do_journal_write()
2438 					if (unlikely(memcmp(test_tag, journal_entry_tag(ic, je2), ic->tag_size)))  in do_journal_write()
2439 						dm_integrity_io_error(ic, "tag mismatch when replaying journal", -EILSEQ);  in do_journal_write()
2443 				r = dm_integrity_rw_tag(ic, journal_entry_tag(ic, je2), &metadata_block, &metadata_offset,  in do_journal_write()
2444 							ic->tag_size, TAG_WRITE);  in do_journal_write()
2446 					dm_integrity_io_error(ic, "reading tags", r);  in do_journal_write()
2451 			copy_from_journal(ic, i, j << ic->sb->log2_sectors_per_block,  in do_journal_write()
2452 					  (k - j) << ic->sb->log2_sectors_per_block,  in do_journal_write()
2453 					  get_data_sector(ic, area, offset),  in do_journal_write()
2460 	dm_bufio_write_dirty_buffers_async(ic->bufio);  in do_journal_write()
2467 	dm_integrity_flush_buffers(ic, true);  in do_journal_write()
2472 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, writer_work);  in integrity_writer()  local
2477 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_writer()
2478 	write_start = ic->committed_section;  in integrity_writer()
2479 	write_sections = ic->n_committed_sections;  in integrity_writer()
2480 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_writer()
2485 	do_journal_write(ic, write_start, write_sections, false);  in integrity_writer()
2487 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_writer()
2489 	ic->committed_section += write_sections;  in integrity_writer()
2490 	wraparound_section(ic, &ic->committed_section);  in integrity_writer()
2491 	ic->n_committed_sections -= write_sections;  in integrity_writer()
2493 	prev_free_sectors = ic->free_sectors;  in integrity_writer()
2494 	ic->free_sectors += write_sections * ic->journal_section_entries;  in integrity_writer()
2496 		wake_up_locked(&ic->endio_wait);  in integrity_writer()
2498 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_writer()
2501 static void recalc_write_super(struct dm_integrity_c *ic)  in recalc_write_super()  argument
2505 	dm_integrity_flush_buffers(ic, false);  in recalc_write_super()
2506 	if (dm_integrity_failed(ic))  in recalc_write_super()
2509 	r = sync_rw_sb(ic, REQ_OP_WRITE, 0);  in recalc_write_super()
2511 		dm_integrity_io_error(ic, "writing superblock", r);  in recalc_write_super()
2516 	struct dm_integrity_c *ic = container_of(w, struct dm_integrity_c, recalc_work);  in integrity_recalc()  local
2529 	DEBUG_print("start recalculation... (position %llx)\n", le64_to_cpu(ic->sb->recalc_sector));  in integrity_recalc()
2531 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2535 	if (unlikely(dm_post_suspending(ic->ti)))  in integrity_recalc()
2538 	range.logical_sector = le64_to_cpu(ic->sb->recalc_sector);  in integrity_recalc()
2539 	if (unlikely(range.logical_sector >= ic->provided_data_sectors)) {  in integrity_recalc()
2540 		if (ic->mode == 'B') {  in integrity_recalc()
2541 			block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in integrity_recalc()
2543 			queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in integrity_recalc()
2548 	get_area_and_offset(ic, range.logical_sector, &area, &offset);  in integrity_recalc()
2549 	range.n_sectors = min((sector_t)RECALC_SECTORS, ic->provided_data_sectors - range.logical_sector);  in integrity_recalc()
2550 	if (!ic->meta_dev)  in integrity_recalc()
2551 …range.n_sectors = min(range.n_sectors, ((sector_t)1U << ic->sb->log2_interleave_sectors) - (unsign…  in integrity_recalc()
2553 	add_new_range_and_wait(ic, &range);  in integrity_recalc()
2554 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2558 	if (ic->mode == 'B') {  in integrity_recalc()
2559 		if (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector, n_sectors, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2562 		while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector,  in integrity_recalc()
2563 				       ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2564 			logical_sector += ic->sectors_per_block;  in integrity_recalc()
2565 			n_sectors -= ic->sectors_per_block;  in integrity_recalc()
2568 		while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector + n_sectors - ic->sectors_per_block,  in integrity_recalc()
2569 				       ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) {  in integrity_recalc()
2570 			n_sectors -= ic->sectors_per_block;  in integrity_recalc()
2573 		get_area_and_offset(ic, logical_sector, &area, &offset);  in integrity_recalc()
2579 		recalc_write_super(ic);  in integrity_recalc()
2580 		if (ic->mode == 'B') {  in integrity_recalc()
2581 			queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval);  in integrity_recalc()
2586 	if (unlikely(dm_integrity_failed(ic)))  in integrity_recalc()
2592 	io_req.mem.ptr.addr = ic->recalc_buffer;  in integrity_recalc()
2594 	io_req.client = ic->io;  in integrity_recalc()
2595 	io_loc.bdev = ic->dev->bdev;  in integrity_recalc()
2596 	io_loc.sector = get_data_sector(ic, area, offset);  in integrity_recalc()
2601 		dm_integrity_io_error(ic, "reading data", r);  in integrity_recalc()
2605 	t = ic->recalc_tags;  in integrity_recalc()
2606 	for (i = 0; i < n_sectors; i += ic->sectors_per_block) {  in integrity_recalc()
2607 		integrity_sector_checksum(ic, logical_sector + i, ic->recalc_buffer + (i << SECTOR_SHIFT), t);  in integrity_recalc()
2608 		t += ic->tag_size;  in integrity_recalc()
2611 	metadata_block = get_metadata_sector_and_offset(ic, area, offset, &metadata_offset);  in integrity_recalc()
2613 …r = dm_integrity_rw_tag(ic, ic->recalc_tags, &metadata_block, &metadata_offset, t - ic->recalc_tag…  in integrity_recalc()
2615 		dm_integrity_io_error(ic, "writing tags", r);  in integrity_recalc()
2619 	if (ic->mode == 'B') {  in integrity_recalc()
2622 			 (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) <<  in integrity_recalc()
2623 			(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in integrity_recalc()
2625 		       (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)) <<  in integrity_recalc()
2626 			(ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in integrity_recalc()
2627 		block_bitmap_op(ic, ic->recalc_bitmap, start, end - start, BITMAP_OP_CLEAR);  in integrity_recalc()
2633 	spin_lock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2634 	remove_range_unlocked(ic, &range);  in integrity_recalc()
2635 	ic->sb->recalc_sector = cpu_to_le64(range.logical_sector + range.n_sectors);  in integrity_recalc()
2639 	remove_range(ic, &range);  in integrity_recalc()
2643 	spin_unlock_irq(&ic->endio_wait.lock);  in integrity_recalc()
2645 	recalc_write_super(ic);  in integrity_recalc()
2651 	struct dm_integrity_c *ic = bbs->ic;  in bitmap_block_work()  local
2668 		if (block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in bitmap_block_work()
2670 			remove_range(ic, &dio->range);  in bitmap_block_work()
2672 			queue_work(ic->offload_wq, &dio->work);  in bitmap_block_work()
2674 			block_bitmap_op(ic, ic->journal, dio->range.logical_sector,  in bitmap_block_work()
2683 	rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC,  in bitmap_block_work()
2690 		block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector,  in bitmap_block_work()
2693 		remove_range(ic, &dio->range);  in bitmap_block_work()
2695 		queue_work(ic->offload_wq, &dio->work);  in bitmap_block_work()
2698 	queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval);  in bitmap_block_work()
2703 	struct dm_integrity_c *ic = container_of(work, struct dm_integrity_c, bitmap_flush_work.work);  in bitmap_flush_work()  local
2708 	dm_integrity_flush_buffers(ic, false);  in bitmap_flush_work()
2711 	range.n_sectors = ic->provided_data_sectors;  in bitmap_flush_work()
2713 	spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2714 	add_new_range_and_wait(ic, &range);  in bitmap_flush_work()
2715 	spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2717 	dm_integrity_flush_buffers(ic, true);  in bitmap_flush_work()
2719 	limit = ic->provided_data_sectors;  in bitmap_flush_work()
2720 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in bitmap_flush_work()
2721 		limit = le64_to_cpu(ic->sb->recalc_sector)  in bitmap_flush_work()
2722 			>> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit)  in bitmap_flush_work()
2723 			<< (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit);  in bitmap_flush_work()
2726 	block_bitmap_op(ic, ic->journal, 0, limit, BITMAP_OP_CLEAR);  in bitmap_flush_work()
2727 	block_bitmap_op(ic, ic->may_write_bitmap, 0, limit, BITMAP_OP_CLEAR);  in bitmap_flush_work()
2729 	rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0,  in bitmap_flush_work()
2730 			   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in bitmap_flush_work()
2732 	spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2733 	remove_range_unlocked(ic, &range);  in bitmap_flush_work()
2734 	while (unlikely((bio = bio_list_pop(&ic->synchronous_bios)) != NULL)) {  in bitmap_flush_work()
2736 		spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2737 		spin_lock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2739 	spin_unlock_irq(&ic->endio_wait.lock);  in bitmap_flush_work()
2743 static void init_journal(struct dm_integrity_c *ic, unsigned start_section,  in init_journal()  argument
2753 		wraparound_section(ic, &i);  in init_journal()
2754 		for (j = 0; j < ic->journal_section_sectors; j++) {  in init_journal()
2755 			struct journal_sector *js = access_journal(ic, i, j);  in init_journal()
2757 			js->commit_id = dm_integrity_commit_id(ic, i, j, commit_seq);  in init_journal()
2759 		for (j = 0; j < ic->journal_section_entries; j++) {  in init_journal()
2760 			struct journal_entry *je = access_journal_entry(ic, i, j);  in init_journal()
2765 	write_journal(ic, start_section, n_sections);  in init_journal()
2768 static int find_commit_seq(struct dm_integrity_c *ic, unsigned i, unsigned j, commit_id_t id)  in find_commit_seq()  argument
2772 		if (dm_integrity_commit_id(ic, i, j, k) == id)  in find_commit_seq()
2775 	dm_integrity_io_error(ic, "journal commit id", -EIO);  in find_commit_seq()
2779 static void replay_journal(struct dm_integrity_c *ic)  in replay_journal()  argument
2789 	if (ic->mode == 'R')  in replay_journal()
2792 	if (ic->journal_uptodate)  in replay_journal()
2798 	if (!ic->just_formatted) {  in replay_journal()
2800 		rw_journal(ic, REQ_OP_READ, 0, 0, ic->journal_sections, NULL);  in replay_journal()
2801 		if (ic->journal_io)  in replay_journal()
2802 			DEBUG_bytes(lowmem_page_address(ic->journal_io[0].page), 64, "read journal");  in replay_journal()
2803 		if (ic->journal_io) {  in replay_journal()
2805 			crypt_comp.ic = ic;  in replay_journal()
2808 			encrypt_journal(ic, false, 0, ic->journal_sections, &crypt_comp);  in replay_journal()
2811 		DEBUG_bytes(lowmem_page_address(ic->journal[0].page), 64, "decrypted journal");  in replay_journal()
2814 	if (dm_integrity_failed(ic))  in replay_journal()
2820 	for (i = 0; i < ic->journal_sections; i++) {  in replay_journal()
2821 		for (j = 0; j < ic->journal_section_sectors; j++) {  in replay_journal()
2823 			struct journal_sector *js = access_journal(ic, i, j);  in replay_journal()
2824 			k = find_commit_seq(ic, i, j, js->commit_id);  in replay_journal()
2831 			for (j = 0; j < ic->journal_section_entries; j++) {  in replay_journal()
2832 				struct journal_entry *je = access_journal_entry(ic, i, j);  in replay_journal()
2850 			dm_integrity_io_error(ic, "journal commit ids", -EIO);  in replay_journal()
2865 	if (unlikely(write_start >= ic->journal_sections))  in replay_journal()
2867 	wraparound_section(ic, &write_start);  in replay_journal()
2870 	for (write_sections = 0; write_sections < ic->journal_sections; write_sections++) {  in replay_journal()
2871 		for (j = 0; j < ic->journal_section_sectors; j++) {  in replay_journal()
2872 			struct journal_sector *js = access_journal(ic, i, j);  in replay_journal()
2874 			if (js->commit_id != dm_integrity_commit_id(ic, i, j, want_commit_seq)) {  in replay_journal()
2881 					    i, j, find_commit_seq(ic, i, j, js->commit_id), want_commit_seq);  in replay_journal()
2886 		if (unlikely(i >= ic->journal_sections))  in replay_journal()
2888 		wraparound_section(ic, &i);  in replay_journal()
2895 		do_journal_write(ic, write_start, write_sections, true);  in replay_journal()
2898 	if (write_sections == ic->journal_sections && (ic->mode == 'J' || journal_empty)) {  in replay_journal()
2900 		ic->commit_seq = want_commit_seq;  in replay_journal()
2901 		DEBUG_print("continuing from section %u, commit seq %d\n", write_start, ic->commit_seq);  in replay_journal()
2910 		init_journal(ic, s, 1, erase_seq);  in replay_journal()
2912 		wraparound_section(ic, &s);  in replay_journal()
2913 		if (ic->journal_sections >= 2) {  in replay_journal()
2914 			init_journal(ic, s, ic->journal_sections - 2, erase_seq);  in replay_journal()
2915 			s += ic->journal_sections - 2;  in replay_journal()
2916 			wraparound_section(ic, &s);  in replay_journal()
2917 			init_journal(ic, s, 1, erase_seq);  in replay_journal()
2921 		ic->commit_seq = next_commit_seq(erase_seq);  in replay_journal()
2924 	ic->committed_section = continue_section;  in replay_journal()
2925 	ic->n_committed_sections = 0;  in replay_journal()
2927 	ic->uncommitted_section = continue_section;  in replay_journal()
2928 	ic->n_uncommitted_sections = 0;  in replay_journal()
2930 	ic->free_section = continue_section;  in replay_journal()
2931 	ic->free_section_entry = 0;  in replay_journal()
2932 	ic->free_sectors = ic->journal_entries;  in replay_journal()
2934 	ic->journal_tree_root = RB_ROOT;  in replay_journal()
2935 	for (i = 0; i < ic->journal_entries; i++)  in replay_journal()
2936 		init_journal_node(&ic->journal_tree[i]);  in replay_journal()
2939 static void dm_integrity_enter_synchronous_mode(struct dm_integrity_c *ic)  in dm_integrity_enter_synchronous_mode()  argument
2943 	if (ic->mode == 'B') {  in dm_integrity_enter_synchronous_mode()
2944 		ic->bitmap_flush_interval = msecs_to_jiffies(10) + 1;  in dm_integrity_enter_synchronous_mode()
2945 		ic->synchronous_mode = 1;  in dm_integrity_enter_synchronous_mode()
2947 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_enter_synchronous_mode()
2948 		queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, 0);  in dm_integrity_enter_synchronous_mode()
2949 		flush_workqueue(ic->commit_wq);  in dm_integrity_enter_synchronous_mode()
2955 	struct dm_integrity_c *ic = container_of(n, struct dm_integrity_c, reboot_notifier);  in dm_integrity_reboot()  local
2959 	dm_integrity_enter_synchronous_mode(ic);  in dm_integrity_reboot()
2966 	struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private;  in dm_integrity_postsuspend()  local
2969 	WARN_ON(unregister_reboot_notifier(&ic->reboot_notifier));  in dm_integrity_postsuspend()
2971 	del_timer_sync(&ic->autocommit_timer);  in dm_integrity_postsuspend()
2973 	if (ic->recalc_wq)  in dm_integrity_postsuspend()
2974 		drain_workqueue(ic->recalc_wq);  in dm_integrity_postsuspend()
2976 	if (ic->mode == 'B')  in dm_integrity_postsuspend()
2977 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_postsuspend()
2979 	queue_work(ic->commit_wq, &ic->commit_work);  in dm_integrity_postsuspend()
2980 	drain_workqueue(ic->commit_wq);  in dm_integrity_postsuspend()
2982 	if (ic->mode == 'J') {  in dm_integrity_postsuspend()
2983 		queue_work(ic->writer_wq, &ic->writer_work);  in dm_integrity_postsuspend()
2984 		drain_workqueue(ic->writer_wq);  in dm_integrity_postsuspend()
2985 		dm_integrity_flush_buffers(ic, true);  in dm_integrity_postsuspend()
2986 		if (ic->wrote_to_journal) {  in dm_integrity_postsuspend()
2987 			init_journal(ic, ic->free_section,  in dm_integrity_postsuspend()
2988 				     ic->journal_sections - ic->free_section, ic->commit_seq);  in dm_integrity_postsuspend()
2989 			if (ic->free_section) {  in dm_integrity_postsuspend()
2990 				init_journal(ic, 0, ic->free_section,  in dm_integrity_postsuspend()
2991 					     next_commit_seq(ic->commit_seq));  in dm_integrity_postsuspend()
2996 	if (ic->mode == 'B') {  in dm_integrity_postsuspend()
2997 		dm_integrity_flush_buffers(ic, true);  in dm_integrity_postsuspend()
3000 		init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_postsuspend()
3001 		ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_postsuspend()
3002 		r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA);  in dm_integrity_postsuspend()
3004 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_postsuspend()
3008 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));  in dm_integrity_postsuspend()
3010 	ic->journal_uptodate = true;  in dm_integrity_postsuspend()
3015 	struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private;  in dm_integrity_resume()  local
3016 	__u64 old_provided_data_sectors = le64_to_cpu(ic->sb->provided_data_sectors);  in dm_integrity_resume()
3021 	ic->wrote_to_journal = false;  in dm_integrity_resume()
3023 	if (ic->provided_data_sectors != old_provided_data_sectors) {  in dm_integrity_resume()
3024 		if (ic->provided_data_sectors > old_provided_data_sectors &&  in dm_integrity_resume()
3025 		    ic->mode == 'B' &&  in dm_integrity_resume()
3026 		    ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit) {  in dm_integrity_resume()
3027 			rw_journal_sectors(ic, REQ_OP_READ, 0, 0,  in dm_integrity_resume()
3028 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3029 			block_bitmap_op(ic, ic->journal, old_provided_data_sectors,  in dm_integrity_resume()
3030 					ic->provided_data_sectors - old_provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3031 			rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3032 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3035 		ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);  in dm_integrity_resume()
3036 		r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA);  in dm_integrity_resume()
3038 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3041 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP)) {  in dm_integrity_resume()
3043 		rw_journal_sectors(ic, REQ_OP_READ, 0, 0,  in dm_integrity_resume()
3044 				   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3045 		if (ic->mode == 'B') {  in dm_integrity_resume()
3046 			if (ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit) {  in dm_integrity_resume()
3047 				block_bitmap_copy(ic, ic->recalc_bitmap, ic->journal);  in dm_integrity_resume()
3048 				block_bitmap_copy(ic, ic->may_write_bitmap, ic->journal);  in dm_integrity_resume()
3049 				if (!block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors,  in dm_integrity_resume()
3051 					ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3052 					ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3056 					    ic->sb->log2_blocks_per_bitmap_bit, ic->log2_blocks_per_bitmap_bit);  in dm_integrity_resume()
3057 				ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;  in dm_integrity_resume()
3058 				block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3059 				block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3060 				block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_SET);  in dm_integrity_resume()
3061 				rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3062 						   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3063 				ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3064 				ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3067 			if (!(ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit &&  in dm_integrity_resume()
3068 …	      block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_TEST_ALL_CLEAR))) {  in dm_integrity_resume()
3069 				ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_resume()
3070 				ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_resume()
3072 			init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_resume()
3073 			replay_journal(ic);  in dm_integrity_resume()
3074 			ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_resume()
3076 		r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA);  in dm_integrity_resume()
3078 			dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3080 		replay_journal(ic);  in dm_integrity_resume()
3081 		if (ic->mode == 'B') {  in dm_integrity_resume()
3082 			ic->sb->flags |= cpu_to_le32(SB_FLAG_DIRTY_BITMAP);  in dm_integrity_resume()
3083 			ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;  in dm_integrity_resume()
3084 			r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA);  in dm_integrity_resume()
3086 				dm_integrity_io_error(ic, "writing superblock", r);  in dm_integrity_resume()
3088 			block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3089 			block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3090 			block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR);  in dm_integrity_resume()
3091 			if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_resume()
3092 			    le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors) {  in dm_integrity_resume()
3093 				block_bitmap_op(ic, ic->journal, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3094 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3095 				block_bitmap_op(ic, ic->recalc_bitmap, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3096 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3097 				block_bitmap_op(ic, ic->may_write_bitmap, le64_to_cpu(ic->sb->recalc_sector),  in dm_integrity_resume()
3098 						ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);  in dm_integrity_resume()
3100 			rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0,  in dm_integrity_resume()
3101 					   ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);  in dm_integrity_resume()
3105 	DEBUG_print("testing recalc: %x\n", ic->sb->flags);  in dm_integrity_resume()
3106 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in dm_integrity_resume()
3107 		__u64 recalc_pos = le64_to_cpu(ic->sb->recalc_sector);  in dm_integrity_resume()
3108 		DEBUG_print("recalc pos: %llx / %llx\n", recalc_pos, ic->provided_data_sectors);  in dm_integrity_resume()
3109 		if (recalc_pos < ic->provided_data_sectors) {  in dm_integrity_resume()
3110 			queue_work(ic->recalc_wq, &ic->recalc_work);  in dm_integrity_resume()
3111 		} else if (recalc_pos > ic->provided_data_sectors) {  in dm_integrity_resume()
3112 			ic->sb->recalc_sector = cpu_to_le64(ic->provided_data_sectors);  in dm_integrity_resume()
3113 			recalc_write_super(ic);  in dm_integrity_resume()
3117 	ic->reboot_notifier.notifier_call = dm_integrity_reboot;  in dm_integrity_resume()
3118 	ic->reboot_notifier.next = NULL;  in dm_integrity_resume()
3119 	ic->reboot_notifier.priority = INT_MAX - 1;	/* be notified after md and before hardware drivers */  in dm_integrity_resume()
3120 	WARN_ON(register_reboot_notifier(&ic->reboot_notifier));  in dm_integrity_resume()
3124 	dm_integrity_enter_synchronous_mode(ic);  in dm_integrity_resume()
3131 	struct dm_integrity_c *ic = (struct dm_integrity_c *)ti->private;  in dm_integrity_status()  local
3138 			(unsigned long long)atomic64_read(&ic->number_of_mismatches),  in dm_integrity_status()
3139 			ic->provided_data_sectors);  in dm_integrity_status()
3140 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in dm_integrity_status()
3141 			DMEMIT(" %llu", le64_to_cpu(ic->sb->recalc_sector));  in dm_integrity_status()
3147 		__u64 watermark_percentage = (__u64)(ic->journal_entries - ic->free_sectors_threshold) * 100;  in dm_integrity_status()
3148 		watermark_percentage += ic->journal_entries / 2;  in dm_integrity_status()
3149 		do_div(watermark_percentage, ic->journal_entries);  in dm_integrity_status()
3151 		arg_count += !!ic->meta_dev;  in dm_integrity_status()
3152 		arg_count += ic->sectors_per_block != 1;  in dm_integrity_status()
3153 		arg_count += !!(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING));  in dm_integrity_status()
3154 		arg_count += ic->discard;  in dm_integrity_status()
3155 		arg_count += ic->mode == 'J';  in dm_integrity_status()
3156 		arg_count += ic->mode == 'J';  in dm_integrity_status()
3157 		arg_count += ic->mode == 'B';  in dm_integrity_status()
3158 		arg_count += ic->mode == 'B';  in dm_integrity_status()
3159 		arg_count += !!ic->internal_hash_alg.alg_string;  in dm_integrity_status()
3160 		arg_count += !!ic->journal_crypt_alg.alg_string;  in dm_integrity_status()
3161 		arg_count += !!ic->journal_mac_alg.alg_string;  in dm_integrity_status()
3162 		arg_count += (ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0;  in dm_integrity_status()
3163 		arg_count += ic->legacy_recalculate;  in dm_integrity_status()
3164 		DMEMIT("%s %llu %u %c %u", ic->dev->name, ic->start,  in dm_integrity_status()
3165 		       ic->tag_size, ic->mode, arg_count);  in dm_integrity_status()
3166 		if (ic->meta_dev)  in dm_integrity_status()
3167 			DMEMIT(" meta_device:%s", ic->meta_dev->name);  in dm_integrity_status()
3168 		if (ic->sectors_per_block != 1)  in dm_integrity_status()
3169 			DMEMIT(" block_size:%u", ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_status()
3170 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))  in dm_integrity_status()
3172 		if (ic->discard)  in dm_integrity_status()
3174 		DMEMIT(" journal_sectors:%u", ic->initial_sectors - SB_SECTORS);  in dm_integrity_status()
3175 		DMEMIT(" interleave_sectors:%u", 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_status()
3176 		DMEMIT(" buffer_sectors:%u", 1U << ic->log2_buffer_sectors);  in dm_integrity_status()
3177 		if (ic->mode == 'J') {  in dm_integrity_status()
3179 			DMEMIT(" commit_time:%u", ic->autocommit_msec);  in dm_integrity_status()
3181 		if (ic->mode == 'B') {  in dm_integrity_status()
3182 …DMEMIT(" sectors_per_bit:%llu", (sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit);  in dm_integrity_status()
3183 			DMEMIT(" bitmap_flush_interval:%u", jiffies_to_msecs(ic->bitmap_flush_interval));  in dm_integrity_status()
3185 		if ((ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING)) != 0)  in dm_integrity_status()
3187 		if (ic->legacy_recalculate)  in dm_integrity_status()
3192 			if (ic->a.alg_string) {				\  in dm_integrity_status()
3193 				DMEMIT(" %s:%s", n, ic->a.alg_string);	\  in dm_integrity_status()
3194 				if (ic->a.key_string)			\  in dm_integrity_status()
3195 					DMEMIT(":%s", ic->a.key_string);\  in dm_integrity_status()
3209 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_iterate_devices()  local
3211 	if (!ic->meta_dev)  in dm_integrity_iterate_devices()
3212 		return fn(ti, ic->dev, ic->start + ic->initial_sectors + ic->metadata_run, ti->len, data);  in dm_integrity_iterate_devices()
3214 		return fn(ti, ic->dev, 0, ti->len, data);  in dm_integrity_iterate_devices()
3219 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_io_hints()  local
3221 	if (ic->sectors_per_block > 1) {  in dm_integrity_io_hints()
3222 		limits->logical_block_size = ic->sectors_per_block << SECTOR_SHIFT;  in dm_integrity_io_hints()
3223 		limits->physical_block_size = ic->sectors_per_block << SECTOR_SHIFT;  in dm_integrity_io_hints()
3224 		blk_limits_io_min(limits, ic->sectors_per_block << SECTOR_SHIFT);  in dm_integrity_io_hints()
3228 static void calculate_journal_section_size(struct dm_integrity_c *ic)  in calculate_journal_section_size()  argument
3232 	ic->journal_sections = le32_to_cpu(ic->sb->journal_sections);  in calculate_journal_section_size()
3233 …ic->journal_entry_size = roundup(offsetof(struct journal_entry, last_bytes[ic->sectors_per_block])…  in calculate_journal_section_size()
3236 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC))  in calculate_journal_section_size()
3238 	ic->journal_entries_per_sector = sector_space / ic->journal_entry_size;  in calculate_journal_section_size()
3239 	ic->journal_section_entries = ic->journal_entries_per_sector * JOURNAL_BLOCK_SECTORS;  in calculate_journal_section_size()
3240 …ic->journal_section_sectors = (ic->journal_section_entries << ic->sb->log2_sectors_per_block) + JO…  in calculate_journal_section_size()
3241 	ic->journal_entries = ic->journal_section_entries * ic->journal_sections;  in calculate_journal_section_size()
3244 static int calculate_device_limits(struct dm_integrity_c *ic)  in calculate_device_limits()  argument
3248 	calculate_journal_section_size(ic);  in calculate_device_limits()
3249 	initial_sectors = SB_SECTORS + (__u64)ic->journal_section_sectors * ic->journal_sections;  in calculate_device_limits()
3250 …if (initial_sectors + METADATA_PADDING_SECTORS >= ic->meta_device_sectors || initial_sectors > UIN…  in calculate_device_limits()
3252 	ic->initial_sectors = initial_sectors;  in calculate_device_limits()
3254 	if (!ic->meta_dev) {  in calculate_device_limits()
3259 			ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_PADDING) ?  in calculate_device_limits()
3263 …ic->metadata_run = round_up((__u64)ic->tag_size << (ic->sb->log2_interleave_sectors - ic->sb->log2…  in calculate_device_limits()
3265 		if (!(ic->metadata_run & (ic->metadata_run - 1)))  in calculate_device_limits()
3266 			ic->log2_metadata_run = __ffs(ic->metadata_run);  in calculate_device_limits()
3268 			ic->log2_metadata_run = -1;  in calculate_device_limits()
3270 		get_area_and_offset(ic, ic->provided_data_sectors - 1, &last_area, &last_offset);  in calculate_device_limits()
3271 		last_sector = get_data_sector(ic, last_area, last_offset);  in calculate_device_limits()
3272 		if (last_sector < ic->start || last_sector >= ic->meta_device_sectors)  in calculate_device_limits()
3275 		__u64 meta_size = (ic->provided_data_sectors >> ic->sb->log2_sectors_per_block) * ic->tag_size;  in calculate_device_limits()
3276 		meta_size = (meta_size + ((1U << (ic->log2_buffer_sectors + SECTOR_SHIFT)) - 1))  in calculate_device_limits()
3277 				>> (ic->log2_buffer_sectors + SECTOR_SHIFT);  in calculate_device_limits()
3278 		meta_size <<= ic->log2_buffer_sectors;  in calculate_device_limits()
3279 		if (ic->initial_sectors + meta_size < ic->initial_sectors ||  in calculate_device_limits()
3280 		    ic->initial_sectors + meta_size > ic->meta_device_sectors)  in calculate_device_limits()
3282 		ic->metadata_run = 1;  in calculate_device_limits()
3283 		ic->log2_metadata_run = 0;  in calculate_device_limits()
3289 static void get_provided_data_sectors(struct dm_integrity_c *ic)  in get_provided_data_sectors()  argument
3291 	if (!ic->meta_dev) {  in get_provided_data_sectors()
3293 		ic->provided_data_sectors = 0;  in get_provided_data_sectors()
3294 		for (test_bit = fls64(ic->meta_device_sectors) - 1; test_bit >= 3; test_bit--) {  in get_provided_data_sectors()
3295 			__u64 prev_data_sectors = ic->provided_data_sectors;  in get_provided_data_sectors()
3297 			ic->provided_data_sectors |= (sector_t)1 << test_bit;  in get_provided_data_sectors()
3298 			if (calculate_device_limits(ic))  in get_provided_data_sectors()
3299 				ic->provided_data_sectors = prev_data_sectors;  in get_provided_data_sectors()
3302 		ic->provided_data_sectors = ic->data_device_sectors;  in get_provided_data_sectors()
3303 		ic->provided_data_sectors &= ~(sector_t)(ic->sectors_per_block - 1);  in get_provided_data_sectors()
3307 static int initialize_superblock(struct dm_integrity_c *ic, unsigned journal_sectors, unsigned inte…  in initialize_superblock()  argument
3312 	memset(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT);  in initialize_superblock()
3313 	memcpy(ic->sb->magic, SB_MAGIC, 8);  in initialize_superblock()
3314 	ic->sb->integrity_tag_size = cpu_to_le16(ic->tag_size);  in initialize_superblock()
3315 	ic->sb->log2_sectors_per_block = __ffs(ic->sectors_per_block);  in initialize_superblock()
3316 	if (ic->journal_mac_alg.alg_string)  in initialize_superblock()
3317 		ic->sb->flags |= cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC);  in initialize_superblock()
3319 	calculate_journal_section_size(ic);  in initialize_superblock()
3320 	journal_sections = journal_sectors / ic->journal_section_sectors;  in initialize_superblock()
3324 	if (!ic->meta_dev) {  in initialize_superblock()
3325 		if (ic->fix_padding)  in initialize_superblock()
3326 			ic->sb->flags |= cpu_to_le32(SB_FLAG_FIXED_PADDING);  in initialize_superblock()
3327 		ic->sb->journal_sections = cpu_to_le32(journal_sections);  in initialize_superblock()
3330 		ic->sb->log2_interleave_sectors = __fls(interleave_sectors);  in initialize_superblock()
3331 …ic->sb->log2_interleave_sectors = max((__u8)MIN_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave_s…  in initialize_superblock()
3332 …ic->sb->log2_interleave_sectors = min((__u8)MAX_LOG2_INTERLEAVE_SECTORS, ic->sb->log2_interleave_s…  in initialize_superblock()
3334 		get_provided_data_sectors(ic);  in initialize_superblock()
3335 		if (!ic->provided_data_sectors)  in initialize_superblock()
3338 		ic->sb->log2_interleave_sectors = 0;  in initialize_superblock()
3340 		get_provided_data_sectors(ic);  in initialize_superblock()
3341 		if (!ic->provided_data_sectors)  in initialize_superblock()
3345 		ic->sb->journal_sections = cpu_to_le32(0);  in initialize_superblock()
3347 			__u32 prev_journal_sections = le32_to_cpu(ic->sb->journal_sections);  in initialize_superblock()
3351 			ic->sb->journal_sections = cpu_to_le32(test_journal_sections);  in initialize_superblock()
3352 			if (calculate_device_limits(ic))  in initialize_superblock()
3353 				ic->sb->journal_sections = cpu_to_le32(prev_journal_sections);  in initialize_superblock()
3356 		if (!le32_to_cpu(ic->sb->journal_sections)) {  in initialize_superblock()
3357 			if (ic->log2_buffer_sectors > 3) {  in initialize_superblock()
3358 				ic->log2_buffer_sectors--;  in initialize_superblock()
3365 	ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);  in initialize_superblock()
3367 	sb_set_version(ic);  in initialize_superblock()
3372 static void dm_integrity_set(struct dm_target *ti, struct dm_integrity_c *ic)  in dm_integrity_set()  argument
3379 	bi.tuple_size = ic->tag_size;  in dm_integrity_set()
3381 	bi.interval_exp = ic->sb->log2_sectors_per_block + SECTOR_SHIFT;  in dm_integrity_set()
3422 static void dm_integrity_free_journal_scatterlist(struct dm_integrity_c *ic, struct scatterlist **s…  in dm_integrity_free_journal_scatterlist()  argument
3425 	for (i = 0; i < ic->journal_sections; i++)  in dm_integrity_free_journal_scatterlist()
3430 static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_integrity_c *ic,  in dm_integrity_alloc_journal_scatterlist()  argument
3436 	sl = kvmalloc_array(ic->journal_sections,  in dm_integrity_alloc_journal_scatterlist()
3442 	for (i = 0; i < ic->journal_sections; i++) {  in dm_integrity_alloc_journal_scatterlist()
3449 		page_list_location(ic, i, 0, &start_index, &start_offset);  in dm_integrity_alloc_journal_scatterlist()
3450 		page_list_location(ic, i, ic->journal_section_sectors - 1,  in dm_integrity_alloc_journal_scatterlist()
3458 			dm_integrity_free_journal_scatterlist(ic, sl);  in dm_integrity_alloc_journal_scatterlist()
3549 static int create_journal(struct dm_integrity_c *ic, char **error)  in create_journal()  argument
3557 	ic->commit_ids[0] = cpu_to_le64(0x1111111111111111ULL);  in create_journal()
3558 	ic->commit_ids[1] = cpu_to_le64(0x2222222222222222ULL);  in create_journal()
3559 	ic->commit_ids[2] = cpu_to_le64(0x3333333333333333ULL);  in create_journal()
3560 	ic->commit_ids[3] = cpu_to_le64(0x4444444444444444ULL);  in create_journal()
3562 	journal_pages = roundup((__u64)ic->journal_sections * ic->journal_section_sectors,  in create_journal()
3570 	ic->journal_pages = journal_pages;  in create_journal()
3572 	ic->journal = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3573 	if (!ic->journal) {  in create_journal()
3578 	if (ic->journal_crypt_alg.alg_string) {  in create_journal()
3582 		comp.ic = ic;  in create_journal()
3583 …ic->journal_crypt = crypto_alloc_skcipher(ic->journal_crypt_alg.alg_string, 0, CRYPTO_ALG_ALLOCATE…  in create_journal()
3584 		if (IS_ERR(ic->journal_crypt)) {  in create_journal()
3586 			r = PTR_ERR(ic->journal_crypt);  in create_journal()
3587 			ic->journal_crypt = NULL;  in create_journal()
3590 		ivsize = crypto_skcipher_ivsize(ic->journal_crypt);  in create_journal()
3591 		blocksize = crypto_skcipher_blocksize(ic->journal_crypt);  in create_journal()
3593 		if (ic->journal_crypt_alg.key) {  in create_journal()
3594 			r = crypto_skcipher_setkey(ic->journal_crypt, ic->journal_crypt_alg.key,  in create_journal()
3595 						   ic->journal_crypt_alg.key_size);  in create_journal()
3602 			    ic->journal_crypt_alg.alg_string, blocksize, ivsize);  in create_journal()
3604 		ic->journal_io = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3605 		if (!ic->journal_io) {  in create_journal()
3614 			req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3628 			ic->journal_xor = dm_integrity_alloc_page_list(ic->journal_pages);  in create_journal()
3629 			if (!ic->journal_xor) {  in create_journal()
3635 			sg = kvmalloc_array(ic->journal_pages + 1,  in create_journal()
3643 			sg_init_table(sg, ic->journal_pages + 1);  in create_journal()
3644 			for (i = 0; i < ic->journal_pages; i++) {  in create_journal()
3645 				char *va = lowmem_page_address(ic->journal_xor[i].page);  in create_journal()
3649 			sg_set_buf(&sg[i], &ic->commit_ids, sizeof ic->commit_ids);  in create_journal()
3652 						   PAGE_SIZE * ic->journal_pages + sizeof ic->commit_ids, crypt_iv);  in create_journal()
3658 			r = dm_integrity_failed(ic);  in create_journal()
3663 			DEBUG_bytes(lowmem_page_address(ic->journal_xor[0].page), 64, "xor data");  in create_journal()
3665 			crypto_free_skcipher(ic->journal_crypt);  in create_journal()
3666 			ic->journal_crypt = NULL;  in create_journal()
3670 			req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3691 			ic->journal_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal);  in create_journal()
3692 			if (!ic->journal_scatterlist) {  in create_journal()
3697 			ic->journal_io_scatterlist = dm_integrity_alloc_journal_scatterlist(ic, ic->journal_io);  in create_journal()
3698 			if (!ic->journal_io_scatterlist) {  in create_journal()
3703 			ic->sk_requests = kvmalloc_array(ic->journal_sections,  in create_journal()
3706 			if (!ic->sk_requests) {  in create_journal()
3711 			for (i = 0; i < ic->journal_sections; i++) {  in create_journal()
3727 				r = dm_integrity_failed(ic);  in create_journal()
3733 				section_req = skcipher_request_alloc(ic->journal_crypt, GFP_KERNEL);  in create_journal()
3748 				section_req->cryptlen = (size_t)ic->journal_section_sectors << SECTOR_SHIFT;  in create_journal()
3749 				ic->sk_requests[i] = section_req;  in create_journal()
3759 			if (ic->commit_ids[j] == ic->commit_ids[i]) {  in create_journal()
3760 				ic->commit_ids[i] = cpu_to_le64(le64_to_cpu(ic->commit_ids[i]) + 1);  in create_journal()
3764 		DEBUG_print("commit id %u: %016llx\n", i, ic->commit_ids[i]);  in create_journal()
3767 	journal_tree_size = (__u64)ic->journal_entries * sizeof(struct journal_node);  in create_journal()
3773 	ic->journal_tree = kvmalloc(journal_tree_size, GFP_KERNEL);  in create_journal()
3774 	if (!ic->journal_tree) {  in create_journal()
3812 	struct dm_integrity_c *ic;  in dm_integrity_ctr()  local
3836 	ic = kzalloc(sizeof(struct dm_integrity_c), GFP_KERNEL);  in dm_integrity_ctr()
3837 	if (!ic) {  in dm_integrity_ctr()
3841 	ti->private = ic;  in dm_integrity_ctr()
3843 	ic->ti = ti;  in dm_integrity_ctr()
3845 	ic->in_progress = RB_ROOT;  in dm_integrity_ctr()
3846 	INIT_LIST_HEAD(&ic->wait_list);  in dm_integrity_ctr()
3847 	init_waitqueue_head(&ic->endio_wait);  in dm_integrity_ctr()
3848 	bio_list_init(&ic->flush_bio_list);  in dm_integrity_ctr()
3849 	init_waitqueue_head(&ic->copy_to_journal_wait);  in dm_integrity_ctr()
3850 	init_completion(&ic->crypto_backoff);  in dm_integrity_ctr()
3851 	atomic64_set(&ic->number_of_mismatches, 0);  in dm_integrity_ctr()
3852 	ic->bitmap_flush_interval = BITMAP_FLUSH_INTERVAL;  in dm_integrity_ctr()
3854 	r = dm_get_device(ti, argv[0], dm_table_get_mode(ti->table), &ic->dev);  in dm_integrity_ctr()
3865 	ic->start = start;  in dm_integrity_ctr()
3868 		if (sscanf(argv[2], "%u%c", &ic->tag_size, &dummy) != 1 || !ic->tag_size) {  in dm_integrity_ctr()
3877 		ic->mode = argv[3][0];  in dm_integrity_ctr()
3889 	ic->sectors_per_block = 1;  in dm_integrity_ctr()
3918 			if (ic->meta_dev) {  in dm_integrity_ctr()
3919 				dm_put_device(ti, ic->meta_dev);  in dm_integrity_ctr()
3920 				ic->meta_dev = NULL;  in dm_integrity_ctr()
3923 					  dm_table_get_mode(ti->table), &ic->meta_dev);  in dm_integrity_ctr()
3936 			ic->sectors_per_block = val >> SECTOR_SHIFT;  in dm_integrity_ctr()
3945 			ic->bitmap_flush_interval = msecs_to_jiffies(val);  in dm_integrity_ctr()
3947 			r = get_alg_and_key(opt_string, &ic->internal_hash_alg, &ti->error,  in dm_integrity_ctr()
3952 			r = get_alg_and_key(opt_string, &ic->journal_crypt_alg, &ti->error,  in dm_integrity_ctr()
3957 			r = get_alg_and_key(opt_string, &ic->journal_mac_alg,  &ti->error,  in dm_integrity_ctr()
3962 			ic->recalculate_flag = true;  in dm_integrity_ctr()
3964 			ic->discard = true;  in dm_integrity_ctr()
3966 			ic->fix_padding = true;  in dm_integrity_ctr()
3968 			ic->legacy_recalculate = true;  in dm_integrity_ctr()
3976 	ic->data_device_sectors = i_size_read(ic->dev->bdev->bd_inode) >> SECTOR_SHIFT;  in dm_integrity_ctr()
3977 	if (!ic->meta_dev)  in dm_integrity_ctr()
3978 		ic->meta_device_sectors = ic->data_device_sectors;  in dm_integrity_ctr()
3980 		ic->meta_device_sectors = i_size_read(ic->meta_dev->bdev->bd_inode) >> SECTOR_SHIFT;  in dm_integrity_ctr()
3984 				      ic->data_device_sectors >> DEFAULT_JOURNAL_SIZE_FACTOR);  in dm_integrity_ctr()
3989 	ic->log2_buffer_sectors = min((int)__fls(buffer_sectors), 31 - SECTOR_SHIFT);  in dm_integrity_ctr()
3991 	r = get_mac(&ic->internal_hash, &ic->internal_hash_alg, &ti->error,  in dm_integrity_ctr()
3996 	r = get_mac(&ic->journal_mac, &ic->journal_mac_alg, &ti->error,  in dm_integrity_ctr()
4001 	if (!ic->tag_size) {  in dm_integrity_ctr()
4002 		if (!ic->internal_hash) {  in dm_integrity_ctr()
4007 		ic->tag_size = crypto_shash_digestsize(ic->internal_hash);  in dm_integrity_ctr()
4009 	if (ic->tag_size > MAX_TAG_SIZE) {  in dm_integrity_ctr()
4014 	if (!(ic->tag_size & (ic->tag_size - 1)))  in dm_integrity_ctr()
4015 		ic->log2_tag_size = __ffs(ic->tag_size);  in dm_integrity_ctr()
4017 		ic->log2_tag_size = -1;  in dm_integrity_ctr()
4019 	if (ic->mode == 'B' && !ic->internal_hash) {  in dm_integrity_ctr()
4025 	if (ic->discard && !ic->internal_hash) {  in dm_integrity_ctr()
4031 	ic->autocommit_jiffies = msecs_to_jiffies(sync_msec);  in dm_integrity_ctr()
4032 	ic->autocommit_msec = sync_msec;  in dm_integrity_ctr()
4033 	timer_setup(&ic->autocommit_timer, autocommit_fn, 0);  in dm_integrity_ctr()
4035 	ic->io = dm_io_client_create();  in dm_integrity_ctr()
4036 	if (IS_ERR(ic->io)) {  in dm_integrity_ctr()
4037 		r = PTR_ERR(ic->io);  in dm_integrity_ctr()
4038 		ic->io = NULL;  in dm_integrity_ctr()
4043 	r = mempool_init_slab_pool(&ic->journal_io_mempool, JOURNAL_IO_MEMPOOL, journal_io_cache);  in dm_integrity_ctr()
4049 	ic->metadata_wq = alloc_workqueue("dm-integrity-metadata",  in dm_integrity_ctr()
4051 	if (!ic->metadata_wq) {  in dm_integrity_ctr()
4061 	ic->wait_wq = alloc_workqueue("dm-integrity-wait", WQ_MEM_RECLAIM | WQ_UNBOUND, 1);  in dm_integrity_ctr()
4062 	if (!ic->wait_wq) {  in dm_integrity_ctr()
4068 	ic->offload_wq = alloc_workqueue("dm-integrity-offload", WQ_MEM_RECLAIM,  in dm_integrity_ctr()
4070 	if (!ic->offload_wq) {  in dm_integrity_ctr()
4076 	ic->commit_wq = alloc_workqueue("dm-integrity-commit", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4077 	if (!ic->commit_wq) {  in dm_integrity_ctr()
4082 	INIT_WORK(&ic->commit_work, integrity_commit);  in dm_integrity_ctr()
4084 	if (ic->mode == 'J' || ic->mode == 'B') {  in dm_integrity_ctr()
4085 		ic->writer_wq = alloc_workqueue("dm-integrity-writer", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4086 		if (!ic->writer_wq) {  in dm_integrity_ctr()
4091 		INIT_WORK(&ic->writer_work, integrity_writer);  in dm_integrity_ctr()
4094 	ic->sb = alloc_pages_exact(SB_SECTORS << SECTOR_SHIFT, GFP_KERNEL);  in dm_integrity_ctr()
4095 	if (!ic->sb) {  in dm_integrity_ctr()
4101 	r = sync_rw_sb(ic, REQ_OP_READ, 0);  in dm_integrity_ctr()
4107 	if (memcmp(ic->sb->magic, SB_MAGIC, 8)) {  in dm_integrity_ctr()
4108 		if (ic->mode != 'R') {  in dm_integrity_ctr()
4109 			if (memchr_inv(ic->sb, 0, SB_SECTORS << SECTOR_SHIFT)) {  in dm_integrity_ctr()
4116 		r = initialize_superblock(ic, journal_sectors, interleave_sectors);  in dm_integrity_ctr()
4121 		if (ic->mode != 'R')  in dm_integrity_ctr()
4125 	if (!ic->sb->version || ic->sb->version > SB_VERSION_4) {  in dm_integrity_ctr()
4130 	if (le16_to_cpu(ic->sb->integrity_tag_size) != ic->tag_size) {  in dm_integrity_ctr()
4135 	if (ic->sb->log2_sectors_per_block != __ffs(ic->sectors_per_block)) {  in dm_integrity_ctr()
4140 	if (!le32_to_cpu(ic->sb->journal_sections)) {  in dm_integrity_ctr()
4146 	if (!ic->meta_dev) {  in dm_integrity_ctr()
4147 		if (ic->sb->log2_interleave_sectors < MIN_LOG2_INTERLEAVE_SECTORS ||  in dm_integrity_ctr()
4148 		    ic->sb->log2_interleave_sectors > MAX_LOG2_INTERLEAVE_SECTORS) {  in dm_integrity_ctr()
4154 		if (ic->sb->log2_interleave_sectors) {  in dm_integrity_ctr()
4160 …if (!!(ic->sb->flags & cpu_to_le32(SB_FLAG_HAVE_JOURNAL_MAC)) != !!ic->journal_mac_alg.alg_string)…  in dm_integrity_ctr()
4166 	get_provided_data_sectors(ic);  in dm_integrity_ctr()
4167 	if (!ic->provided_data_sectors) {  in dm_integrity_ctr()
4174 	r = calculate_device_limits(ic);  in dm_integrity_ctr()
4176 		if (ic->meta_dev) {  in dm_integrity_ctr()
4177 			if (ic->log2_buffer_sectors > 3) {  in dm_integrity_ctr()
4178 				ic->log2_buffer_sectors--;  in dm_integrity_ctr()
4188 	if (log2_sectors_per_bitmap_bit < ic->sb->log2_sectors_per_block)  in dm_integrity_ctr()
4189 		log2_sectors_per_bitmap_bit = ic->sb->log2_sectors_per_block;  in dm_integrity_ctr()
4191 …bits_in_journal = ((__u64)ic->journal_section_sectors * ic->journal_sections) << (SECTOR_SHIFT + 3…  in dm_integrity_ctr()
4194 …while (bits_in_journal < (ic->provided_data_sectors + ((sector_t)1 << log2_sectors_per_bitmap_bit)…  in dm_integrity_ctr()
4197 	log2_blocks_per_bitmap_bit = log2_sectors_per_bitmap_bit - ic->sb->log2_sectors_per_block;  in dm_integrity_ctr()
4198 	ic->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit;  in dm_integrity_ctr()
4200 		ic->sb->log2_blocks_per_bitmap_bit = log2_blocks_per_bitmap_bit;  in dm_integrity_ctr()
4202 	n_bitmap_bits = ((ic->provided_data_sectors >> ic->sb->log2_sectors_per_block)  in dm_integrity_ctr()
4204 	ic->n_bitmap_blocks = DIV_ROUND_UP(n_bitmap_bits, BITMAP_BLOCK_SIZE * 8);  in dm_integrity_ctr()
4206 	if (!ic->meta_dev)  in dm_integrity_ctr()
4207 		ic->log2_buffer_sectors = min(ic->log2_buffer_sectors, (__u8)__ffs(ic->metadata_run));  in dm_integrity_ctr()
4209 	if (ti->len > ic->provided_data_sectors) {  in dm_integrity_ctr()
4216 	threshold = (__u64)ic->journal_entries * (100 - journal_watermark);  in dm_integrity_ctr()
4219 	ic->free_sectors_threshold = threshold;  in dm_integrity_ctr()
4222 	DEBUG_print("	integrity_tag_size %u\n", le16_to_cpu(ic->sb->integrity_tag_size));  in dm_integrity_ctr()
4223 	DEBUG_print("	journal_entry_size %u\n", ic->journal_entry_size);  in dm_integrity_ctr()
4224 	DEBUG_print("	journal_entries_per_sector %u\n", ic->journal_entries_per_sector);  in dm_integrity_ctr()
4225 	DEBUG_print("	journal_section_entries %u\n", ic->journal_section_entries);  in dm_integrity_ctr()
4226 	DEBUG_print("	journal_section_sectors %u\n", ic->journal_section_sectors);  in dm_integrity_ctr()
4227 	DEBUG_print("	journal_sections %u\n", (unsigned)le32_to_cpu(ic->sb->journal_sections));  in dm_integrity_ctr()
4228 	DEBUG_print("	journal_entries %u\n", ic->journal_entries);  in dm_integrity_ctr()
4229 	DEBUG_print("	log2_interleave_sectors %d\n", ic->sb->log2_interleave_sectors);  in dm_integrity_ctr()
4230 	DEBUG_print("	data_device_sectors 0x%llx\n", i_size_read(ic->dev->bdev->bd_inode) >> SECTOR_SHIFT);  in dm_integrity_ctr()
4231 	DEBUG_print("	initial_sectors 0x%x\n", ic->initial_sectors);  in dm_integrity_ctr()
4232 	DEBUG_print("	metadata_run 0x%x\n", ic->metadata_run);  in dm_integrity_ctr()
4233 	DEBUG_print("	log2_metadata_run %d\n", ic->log2_metadata_run);  in dm_integrity_ctr()
4234 …DEBUG_print("	provided_data_sectors 0x%llx (%llu)\n", ic->provided_data_sectors, ic->provided_data…  in dm_integrity_ctr()
4235 	DEBUG_print("	log2_buffer_sectors %u\n", ic->log2_buffer_sectors);  in dm_integrity_ctr()
4238 	if (ic->recalculate_flag && !(ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING))) {  in dm_integrity_ctr()
4239 		ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);  in dm_integrity_ctr()
4240 		ic->sb->recalc_sector = cpu_to_le64(0);  in dm_integrity_ctr()
4243 	if (ic->internal_hash) {  in dm_integrity_ctr()
4245 		ic->recalc_wq = alloc_workqueue("dm-integrity-recalc", WQ_MEM_RECLAIM, 1);  in dm_integrity_ctr()
4246 		if (!ic->recalc_wq ) {  in dm_integrity_ctr()
4251 		INIT_WORK(&ic->recalc_work, integrity_recalc);  in dm_integrity_ctr()
4252 		ic->recalc_buffer = vmalloc(RECALC_SECTORS << SECTOR_SHIFT);  in dm_integrity_ctr()
4253 		if (!ic->recalc_buffer) {  in dm_integrity_ctr()
4258 		recalc_tags_size = (RECALC_SECTORS >> ic->sb->log2_sectors_per_block) * ic->tag_size;  in dm_integrity_ctr()
4259 		if (crypto_shash_digestsize(ic->internal_hash) > ic->tag_size)  in dm_integrity_ctr()
4260 			recalc_tags_size += crypto_shash_digestsize(ic->internal_hash) - ic->tag_size;  in dm_integrity_ctr()
4261 		ic->recalc_tags = kvmalloc(recalc_tags_size, GFP_KERNEL);  in dm_integrity_ctr()
4262 		if (!ic->recalc_tags) {  in dm_integrity_ctr()
4268 		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {  in dm_integrity_ctr()
4275 	if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) &&  in dm_integrity_ctr()
4276 	    le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors &&  in dm_integrity_ctr()
4277 	    dm_integrity_disable_recalculate(ic)) {  in dm_integrity_ctr()
4283 	ic->bufio = dm_bufio_client_create(ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev,  in dm_integrity_ctr()
4284 			1U << (SECTOR_SHIFT + ic->log2_buffer_sectors), 1, 0, NULL, NULL);  in dm_integrity_ctr()
4285 	if (IS_ERR(ic->bufio)) {  in dm_integrity_ctr()
4286 		r = PTR_ERR(ic->bufio);  in dm_integrity_ctr()
4288 		ic->bufio = NULL;  in dm_integrity_ctr()
4291 	dm_bufio_set_sector_offset(ic->bufio, ic->start + ic->initial_sectors);  in dm_integrity_ctr()
4293 	if (ic->mode != 'R') {  in dm_integrity_ctr()
4294 		r = create_journal(ic, &ti->error);  in dm_integrity_ctr()
4300 	if (ic->mode == 'B') {  in dm_integrity_ctr()
4302 		unsigned n_bitmap_pages = DIV_ROUND_UP(ic->n_bitmap_blocks, PAGE_SIZE / BITMAP_BLOCK_SIZE);  in dm_integrity_ctr()
4304 		ic->recalc_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages);  in dm_integrity_ctr()
4305 		if (!ic->recalc_bitmap) {  in dm_integrity_ctr()
4309 		ic->may_write_bitmap = dm_integrity_alloc_page_list(n_bitmap_pages);  in dm_integrity_ctr()
4310 		if (!ic->may_write_bitmap) {  in dm_integrity_ctr()
4314 		ic->bbs = kvmalloc_array(ic->n_bitmap_blocks, sizeof(struct bitmap_block_status), GFP_KERNEL);  in dm_integrity_ctr()
4315 		if (!ic->bbs) {  in dm_integrity_ctr()
4319 		INIT_DELAYED_WORK(&ic->bitmap_flush_work, bitmap_flush_work);  in dm_integrity_ctr()
4320 		for (i = 0; i < ic->n_bitmap_blocks; i++) {  in dm_integrity_ctr()
4321 			struct bitmap_block_status *bbs = &ic->bbs[i];  in dm_integrity_ctr()
4325 			bbs->ic = ic;  in dm_integrity_ctr()
4334 			bbs->bitmap = lowmem_page_address(ic->journal[pl_index].page) + pl_offset;  in dm_integrity_ctr()
4339 		init_journal(ic, 0, ic->journal_sections, 0);  in dm_integrity_ctr()
4340 		r = dm_integrity_failed(ic);  in dm_integrity_ctr()
4345 		r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA);  in dm_integrity_ctr()
4350 		ic->just_formatted = true;  in dm_integrity_ctr()
4353 	if (!ic->meta_dev) {  in dm_integrity_ctr()
4354 		r = dm_set_target_max_io_len(ti, 1U << ic->sb->log2_interleave_sectors);  in dm_integrity_ctr()
4358 	if (ic->mode == 'B') {  in dm_integrity_ctr()
4359 …unsigned max_io_len = ((sector_t)ic->sectors_per_block << ic->log2_blocks_per_bitmap_bit) * (BITMA…  in dm_integrity_ctr()
4370 	if (!ic->internal_hash)  in dm_integrity_ctr()
4371 		dm_integrity_set(ti, ic);  in dm_integrity_ctr()
4375 	if (ic->discard)  in dm_integrity_ctr()
4387 	struct dm_integrity_c *ic = ti->private;  in dm_integrity_dtr()  local
4389 	BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));  in dm_integrity_dtr()
4390 	BUG_ON(!list_empty(&ic->wait_list));  in dm_integrity_dtr()
4392 	if (ic->mode == 'B')  in dm_integrity_dtr()
4393 		cancel_delayed_work_sync(&ic->bitmap_flush_work);  in dm_integrity_dtr()
4394 	if (ic->metadata_wq)  in dm_integrity_dtr()
4395 		destroy_workqueue(ic->metadata_wq);  in dm_integrity_dtr()
4396 	if (ic->wait_wq)  in dm_integrity_dtr()
4397 		destroy_workqueue(ic->wait_wq);  in dm_integrity_dtr()
4398 	if (ic->offload_wq)  in dm_integrity_dtr()
4399 		destroy_workqueue(ic->offload_wq);  in dm_integrity_dtr()
4400 	if (ic->commit_wq)  in dm_integrity_dtr()
4401 		destroy_workqueue(ic->commit_wq);  in dm_integrity_dtr()
4402 	if (ic->writer_wq)  in dm_integrity_dtr()
4403 		destroy_workqueue(ic->writer_wq);  in dm_integrity_dtr()
4404 	if (ic->recalc_wq)  in dm_integrity_dtr()
4405 		destroy_workqueue(ic->recalc_wq);  in dm_integrity_dtr()
4406 	vfree(ic->recalc_buffer);  in dm_integrity_dtr()
4407 	kvfree(ic->recalc_tags);  in dm_integrity_dtr()
4408 	kvfree(ic->bbs);  in dm_integrity_dtr()
4409 	if (ic->bufio)  in dm_integrity_dtr()
4410 		dm_bufio_client_destroy(ic->bufio);  in dm_integrity_dtr()
4411 	mempool_exit(&ic->journal_io_mempool);  in dm_integrity_dtr()
4412 	if (ic->io)  in dm_integrity_dtr()
4413 		dm_io_client_destroy(ic->io);  in dm_integrity_dtr()
4414 	if (ic->dev)  in dm_integrity_dtr()
4415 		dm_put_device(ti, ic->dev);  in dm_integrity_dtr()
4416 	if (ic->meta_dev)  in dm_integrity_dtr()
4417 		dm_put_device(ti, ic->meta_dev);  in dm_integrity_dtr()
4418 	dm_integrity_free_page_list(ic->journal);  in dm_integrity_dtr()
4419 	dm_integrity_free_page_list(ic->journal_io);  in dm_integrity_dtr()
4420 	dm_integrity_free_page_list(ic->journal_xor);  in dm_integrity_dtr()
4421 	dm_integrity_free_page_list(ic->recalc_bitmap);  in dm_integrity_dtr()
4422 	dm_integrity_free_page_list(ic->may_write_bitmap);  in dm_integrity_dtr()
4423 	if (ic->journal_scatterlist)  in dm_integrity_dtr()
4424 		dm_integrity_free_journal_scatterlist(ic, ic->journal_scatterlist);  in dm_integrity_dtr()
4425 	if (ic->journal_io_scatterlist)  in dm_integrity_dtr()
4426 		dm_integrity_free_journal_scatterlist(ic, ic->journal_io_scatterlist);  in dm_integrity_dtr()
4427 	if (ic->sk_requests) {  in dm_integrity_dtr()
4430 		for (i = 0; i < ic->journal_sections; i++) {  in dm_integrity_dtr()
4431 			struct skcipher_request *req = ic->sk_requests[i];  in dm_integrity_dtr()
4437 		kvfree(ic->sk_requests);  in dm_integrity_dtr()
4439 	kvfree(ic->journal_tree);  in dm_integrity_dtr()
4440 	if (ic->sb)  in dm_integrity_dtr()
4441 		free_pages_exact(ic->sb, SB_SECTORS << SECTOR_SHIFT);  in dm_integrity_dtr()
4443 	if (ic->internal_hash)  in dm_integrity_dtr()
4444 		crypto_free_shash(ic->internal_hash);  in dm_integrity_dtr()
4445 	free_alg(&ic->internal_hash_alg);  in dm_integrity_dtr()
4447 	if (ic->journal_crypt)  in dm_integrity_dtr()
4448 		crypto_free_skcipher(ic->journal_crypt);  in dm_integrity_dtr()
4449 	free_alg(&ic->journal_crypt_alg);  in dm_integrity_dtr()
4451 	if (ic->journal_mac)  in dm_integrity_dtr()
4452 		crypto_free_shash(ic->journal_mac);  in dm_integrity_dtr()
4453 	free_alg(&ic->journal_mac_alg);  in dm_integrity_dtr()
4455 	kfree(ic);  in dm_integrity_dtr()