diff options
author | Mike Snitzer <snitzer@redhat.com> | 2019-05-09 21:25:49 +0200 |
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committer | Mike Snitzer <snitzer@redhat.com> | 2019-05-09 22:00:31 +0200 |
commit | 05d6909ea9d62bb357846177a84842e09fc15914 (patch) | |
tree | 04fd1f9f3f82d89fdd09c672a9f0cc7bb5e40034 /drivers/md/dm-integrity.c | |
parent | dm integrity: implement synchronous mode for reboot handling (diff) | |
download | linux-05d6909ea9d62bb357846177a84842e09fc15914.tar.xz linux-05d6909ea9d62bb357846177a84842e09fc15914.zip |
dm integrity: whitespace, coding style and dead code cleanup
Just some things that stood out like a sore thumb.
Also, converted some printk(KERN_CRIT, ...) to DMCRIT(...)
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-integrity.c')
-rw-r--r-- | drivers/md/dm-integrity.c | 104 |
1 files changed, 61 insertions, 43 deletions
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index 1968b0b1b280..9af98a990079 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -488,13 +488,14 @@ static int sync_rw_sb(struct dm_integrity_c *ic, int op, int op_flags) #define BITMAP_OP_SET 2 #define BITMAP_OP_CLEAR 3 -static bool block_bitmap_op(struct dm_integrity_c *ic, struct page_list *bitmap, sector_t sector, sector_t n_sectors, int mode) +static bool block_bitmap_op(struct dm_integrity_c *ic, struct page_list *bitmap, + sector_t sector, sector_t n_sectors, int mode) { unsigned long bit, end_bit, this_end_bit, page, end_page; unsigned long *data; if (unlikely(((sector | n_sectors) & ((1 << ic->sb->log2_sectors_per_block) - 1)) != 0)) { - DMCRIT("invalid bitmap access (%llx,%llx,%d,%d,%d)\n", + DMCRIT("invalid bitmap access (%llx,%llx,%d,%d,%d)", (unsigned long long)sector, (unsigned long long)n_sectors, ic->sb->log2_sectors_per_block, @@ -507,7 +508,8 @@ static bool block_bitmap_op(struct dm_integrity_c *ic, struct page_list *bitmap, return true; bit = sector >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit); - end_bit = (sector + n_sectors - 1) >> (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit); + end_bit = (sector + n_sectors - 1) >> + (ic->sb->log2_sectors_per_block + ic->log2_blocks_per_bitmap_bit); page = bit / (PAGE_SIZE * 8); bit %= PAGE_SIZE * 8; @@ -620,8 +622,8 @@ static void access_journal_check(struct dm_integrity_c *ic, unsigned section, un if (unlikely(section >= ic->journal_sections) || unlikely(offset >= limit)) { - printk(KERN_CRIT "%s: invalid access at (%u,%u), limit (%u,%u)\n", - function, section, offset, ic->journal_sections, limit); + DMCRIT("%s: invalid access at (%u,%u), limit (%u,%u)", + function, section, offset, ic->journal_sections, limit); BUG(); } #endif @@ -1666,7 +1668,8 @@ static int dm_integrity_map(struct dm_target *ti, struct bio *bio) else wanted_tag_size *= ic->tag_size; if (unlikely(wanted_tag_size != bip->bip_iter.bi_size)) { - DMERR("Invalid integrity data size %u, expected %u", bip->bip_iter.bi_size, wanted_tag_size); + DMERR("Invalid integrity data size %u, expected %u", + bip->bip_iter.bi_size, wanted_tag_size); return DM_MAPIO_KILL; } } @@ -1954,15 +1957,15 @@ offload_to_thread: } if (ic->mode == 'B' && dio->write) { - if (!block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector, dio->range.n_sectors, BITMAP_OP_TEST_ALL_SET)) { - struct bitmap_block_status *bbs = sector_to_bitmap_block(ic, dio->range.logical_sector); + if (!block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector, + dio->range.n_sectors, BITMAP_OP_TEST_ALL_SET)) { + struct bitmap_block_status *bbs; + bbs = sector_to_bitmap_block(ic, dio->range.logical_sector); spin_lock(&bbs->bio_queue_lock); bio_list_add(&bbs->bio_queue, bio); spin_unlock(&bbs->bio_queue_lock); - queue_work(ic->writer_wq, &bbs->work); - return; } } @@ -1997,7 +2000,8 @@ offload_to_thread: dio->range.logical_sector + dio->range.n_sectors > le64_to_cpu(ic->sb->recalc_sector)) goto skip_check; if (ic->mode == 'B') { - if (!block_bitmap_op(ic, ic->recalc_bitmap, dio->range.logical_sector, dio->range.n_sectors, BITMAP_OP_TEST_ALL_CLEAR)) + if (!block_bitmap_op(ic, ic->recalc_bitmap, dio->range.logical_sector, + dio->range.n_sectors, BITMAP_OP_TEST_ALL_CLEAR)) goto skip_check; } @@ -2039,20 +2043,14 @@ static void pad_uncommitted(struct dm_integrity_c *ic) ic->n_uncommitted_sections++; } if (WARN_ON(ic->journal_sections * ic->journal_section_entries != - (ic->n_uncommitted_sections + ic->n_committed_sections) * ic->journal_section_entries + ic->free_sectors)) { - printk(KERN_CRIT "dm-integrity: " - "journal_sections %u, " - "journal_section_entries %u, " - "n_uncommitted_sections %u, " - "n_committed_sections %u, " - "journal_section_entries %u, " - "free_sectors %u\n", - ic->journal_sections, - ic->journal_section_entries, - ic->n_uncommitted_sections, - ic->n_committed_sections, - ic->journal_section_entries, - ic->free_sectors); + (ic->n_uncommitted_sections + ic->n_committed_sections) * + ic->journal_section_entries + ic->free_sectors)) { + DMCRIT("journal_sections %u, journal_section_entries %u, " + "n_uncommitted_sections %u, n_committed_sections %u, " + "journal_section_entries %u, free_sectors %u", + ic->journal_sections, ic->journal_section_entries, + ic->n_uncommitted_sections, ic->n_committed_sections, + ic->journal_section_entries, ic->free_sectors); } } @@ -2378,12 +2376,14 @@ next_chunk: if (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector, n_sectors, BITMAP_OP_TEST_ALL_CLEAR)) { goto advance_and_next; } - while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector, ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) { + while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector, + ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) { logical_sector += ic->sectors_per_block; n_sectors -= ic->sectors_per_block; cond_resched(); } - while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector + n_sectors - ic->sectors_per_block, ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) { + while (block_bitmap_op(ic, ic->recalc_bitmap, logical_sector + n_sectors - ic->sectors_per_block, + ic->sectors_per_block, BITMAP_OP_TEST_ALL_CLEAR)) { n_sectors -= ic->sectors_per_block; cond_resched(); } @@ -2471,12 +2471,14 @@ static void bitmap_block_work(struct work_struct *w) dio = dm_per_bio_data(bio, sizeof(struct dm_integrity_io)); - if (block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector, dio->range.n_sectors, BITMAP_OP_TEST_ALL_SET)) { + if (block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector, + dio->range.n_sectors, BITMAP_OP_TEST_ALL_SET)) { remove_range(ic, &dio->range); INIT_WORK(&dio->work, integrity_bio_wait); queue_work(ic->wait_wq, &dio->work); } else { - block_bitmap_op(ic, ic->journal, dio->range.logical_sector, dio->range.n_sectors, BITMAP_OP_SET); + block_bitmap_op(ic, ic->journal, dio->range.logical_sector, + dio->range.n_sectors, BITMAP_OP_SET); bio_list_add(&waiting, bio); } } @@ -2484,12 +2486,15 @@ static void bitmap_block_work(struct work_struct *w) if (bio_list_empty(&waiting)) return; - rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, bbs->idx * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), BITMAP_BLOCK_SIZE >> SECTOR_SHIFT, NULL); + rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, + bbs->idx * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), + BITMAP_BLOCK_SIZE >> SECTOR_SHIFT, NULL); while ((bio = bio_list_pop(&waiting))) { struct dm_integrity_io *dio = dm_per_bio_data(bio, sizeof(struct dm_integrity_io)); - block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector, dio->range.n_sectors, BITMAP_OP_SET); + block_bitmap_op(ic, ic->may_write_bitmap, dio->range.logical_sector, + dio->range.n_sectors, BITMAP_OP_SET); remove_range(ic, &dio->range); INIT_WORK(&dio->work, integrity_bio_wait); @@ -2529,7 +2534,8 @@ static void bitmap_flush_work(struct work_struct *work) block_bitmap_op(ic, ic->journal, 0, limit, BITMAP_OP_CLEAR); block_bitmap_op(ic, ic->may_write_bitmap, 0, limit, BITMAP_OP_CLEAR); - rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); + rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, + ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); spin_lock_irq(&ic->endio_wait.lock); remove_range_unlocked(ic, &range); @@ -2793,6 +2799,7 @@ static void dm_integrity_postsuspend(struct dm_target *ti) if (ic->mode == 'B') { dm_integrity_flush_buffers(ic); #if 1 + /* set to 0 to test bitmap replay code */ init_journal(ic, 0, ic->journal_sections, 0); ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP); r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA); @@ -2816,22 +2823,26 @@ static void dm_integrity_resume(struct dm_target *ti) if (ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP)) { DEBUG_print("resume dirty_bitmap\n"); - rw_journal_sectors(ic, REQ_OP_READ, 0, 0, ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); + rw_journal_sectors(ic, REQ_OP_READ, 0, 0, + ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); if (ic->mode == 'B') { if (ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit) { block_bitmap_copy(ic, ic->recalc_bitmap, ic->journal); block_bitmap_copy(ic, ic->may_write_bitmap, ic->journal); - if (!block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_TEST_ALL_CLEAR)) { + if (!block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, + BITMAP_OP_TEST_ALL_CLEAR)) { ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING); ic->sb->recalc_sector = cpu_to_le64(0); } } else { - DEBUG_print("non-matching blocks_per_bitmap_bit: %u, %u\n", ic->sb->log2_blocks_per_bitmap_bit, ic->log2_blocks_per_bitmap_bit); + DEBUG_print("non-matching blocks_per_bitmap_bit: %u, %u\n", + ic->sb->log2_blocks_per_bitmap_bit, ic->log2_blocks_per_bitmap_bit); ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit; block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET); block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET); block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_SET); - rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); + rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, + ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING); ic->sb->recalc_sector = cpu_to_le64(0); } @@ -2862,7 +2873,8 @@ static void dm_integrity_resume(struct dm_target *ti) block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, mode); block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, mode); block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, mode); - rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); + rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, + ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); } } @@ -2884,6 +2896,7 @@ static void dm_integrity_resume(struct dm_target *ti) WARN_ON(register_reboot_notifier(&ic->reboot_notifier)); #if 0 + /* set to 1 to stress test synchronous mode */ dm_integrity_enter_synchronous_mode(ic); #endif } @@ -3160,7 +3173,8 @@ static void dm_integrity_free_journal_scatterlist(struct dm_integrity_c *ic, str kvfree(sl); } -static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_integrity_c *ic, struct page_list *pl) +static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_integrity_c *ic, + struct page_list *pl) { struct scatterlist **sl; unsigned i; @@ -3179,7 +3193,8 @@ static struct scatterlist **dm_integrity_alloc_journal_scatterlist(struct dm_int unsigned idx; page_list_location(ic, i, 0, &start_index, &start_offset); - page_list_location(ic, i, ic->journal_section_sectors - 1, &end_index, &end_offset); + page_list_location(ic, i, ic->journal_section_sectors - 1, + &end_index, &end_offset); n_pages = (end_index - start_index + 1); @@ -3380,7 +3395,8 @@ static int create_journal(struct dm_integrity_c *ic, char **error) sg_set_buf(&sg[i], &ic->commit_ids, sizeof ic->commit_ids); memset(crypt_iv, 0x00, ivsize); - skcipher_request_set_crypt(req, sg, sg, PAGE_SIZE * ic->journal_pages + sizeof ic->commit_ids, crypt_iv); + skcipher_request_set_crypt(req, sg, sg, + PAGE_SIZE * ic->journal_pages + sizeof ic->commit_ids, crypt_iv); init_completion(&comp.comp); comp.in_flight = (atomic_t)ATOMIC_INIT(1); if (do_crypt(true, req, &comp)) @@ -3602,7 +3618,8 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv) } } - if (!strcmp(argv[3], "J") || !strcmp(argv[3], "B") || !strcmp(argv[3], "D") || !strcmp(argv[3], "R")) { + if (!strcmp(argv[3], "J") || !strcmp(argv[3], "B") || + !strcmp(argv[3], "D") || !strcmp(argv[3], "R")) { ic->mode = argv[3][0]; } else { ti->error = "Invalid mode (expecting J, B, D, R)"; @@ -3648,7 +3665,8 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv) dm_put_device(ti, ic->meta_dev); ic->meta_dev = NULL; } - r = dm_get_device(ti, strchr(opt_string, ':') + 1, dm_table_get_mode(ti->table), &ic->meta_dev); + r = dm_get_device(ti, strchr(opt_string, ':') + 1, + dm_table_get_mode(ti->table), &ic->meta_dev); if (r) { ti->error = "Device lookup failed"; goto bad; @@ -3702,7 +3720,7 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv) if (!journal_sectors) { journal_sectors = min((sector_t)DEFAULT_MAX_JOURNAL_SECTORS, - ic->data_device_sectors >> DEFAULT_JOURNAL_SIZE_FACTOR); + ic->data_device_sectors >> DEFAULT_JOURNAL_SIZE_FACTOR); } if (!buffer_sectors) |