diff options
Diffstat (limited to 'drivers/md/dm-cache-target.c')
| -rw-r--r-- | drivers/md/dm-cache-target.c | 48 |
1 files changed, 31 insertions, 17 deletions
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 1b1469ebe5cb..ffd472e015ca 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -85,6 +85,12 @@ static void dm_unhook_bio(struct dm_hook_info *h, struct bio *bio) { bio->bi_end_io = h->bi_end_io; bio->bi_private = h->bi_private; + + /* + * Must bump bi_remaining to allow bio to complete with + * restored bi_end_io. + */ + atomic_inc(&bio->bi_remaining); } /*----------------------------------------------------------------*/ @@ -664,15 +670,17 @@ static void remap_to_origin(struct cache *cache, struct bio *bio) static void remap_to_cache(struct cache *cache, struct bio *bio, dm_cblock_t cblock) { - sector_t bi_sector = bio->bi_sector; + sector_t bi_sector = bio->bi_iter.bi_sector; bio->bi_bdev = cache->cache_dev->bdev; if (!block_size_is_power_of_two(cache)) - bio->bi_sector = (from_cblock(cblock) * cache->sectors_per_block) + - sector_div(bi_sector, cache->sectors_per_block); + bio->bi_iter.bi_sector = + (from_cblock(cblock) * cache->sectors_per_block) + + sector_div(bi_sector, cache->sectors_per_block); else - bio->bi_sector = (from_cblock(cblock) << cache->sectors_per_block_shift) | - (bi_sector & (cache->sectors_per_block - 1)); + bio->bi_iter.bi_sector = + (from_cblock(cblock) << cache->sectors_per_block_shift) | + (bi_sector & (cache->sectors_per_block - 1)); } static void check_if_tick_bio_needed(struct cache *cache, struct bio *bio) @@ -712,7 +720,7 @@ static void remap_to_cache_dirty(struct cache *cache, struct bio *bio, static dm_oblock_t get_bio_block(struct cache *cache, struct bio *bio) { - sector_t block_nr = bio->bi_sector; + sector_t block_nr = bio->bi_iter.bi_sector; if (!block_size_is_power_of_two(cache)) (void) sector_div(block_nr, cache->sectors_per_block); @@ -1027,7 +1035,7 @@ static void issue_overwrite(struct dm_cache_migration *mg, struct bio *bio) static bool bio_writes_complete_block(struct cache *cache, struct bio *bio) { return (bio_data_dir(bio) == WRITE) && - (bio->bi_size == (cache->sectors_per_block << SECTOR_SHIFT)); + (bio->bi_iter.bi_size == (cache->sectors_per_block << SECTOR_SHIFT)); } static void avoid_copy(struct dm_cache_migration *mg) @@ -1252,7 +1260,7 @@ static void process_flush_bio(struct cache *cache, struct bio *bio) size_t pb_data_size = get_per_bio_data_size(cache); struct per_bio_data *pb = get_per_bio_data(bio, pb_data_size); - BUG_ON(bio->bi_size); + BUG_ON(bio->bi_iter.bi_size); if (!pb->req_nr) remap_to_origin(cache, bio); else @@ -1275,9 +1283,9 @@ static void process_flush_bio(struct cache *cache, struct bio *bio) */ static void process_discard_bio(struct cache *cache, struct bio *bio) { - dm_block_t start_block = dm_sector_div_up(bio->bi_sector, + dm_block_t start_block = dm_sector_div_up(bio->bi_iter.bi_sector, cache->discard_block_size); - dm_block_t end_block = bio->bi_sector + bio_sectors(bio); + dm_block_t end_block = bio_end_sector(bio); dm_block_t b; end_block = block_div(end_block, cache->discard_block_size); @@ -2826,12 +2834,13 @@ static void cache_resume(struct dm_target *ti) /* * Status format: * - * <#used metadata blocks>/<#total metadata blocks> + * <metadata block size> <#used metadata blocks>/<#total metadata blocks> + * <cache block size> <#used cache blocks>/<#total cache blocks> * <#read hits> <#read misses> <#write hits> <#write misses> - * <#demotions> <#promotions> <#blocks in cache> <#dirty> + * <#demotions> <#promotions> <#dirty> * <#features> <features>* * <#core args> <core args> - * <#policy args> <policy args>* + * <policy name> <#policy args> <policy args>* */ static void cache_status(struct dm_target *ti, status_type_t type, unsigned status_flags, char *result, unsigned maxlen) @@ -2869,17 +2878,20 @@ static void cache_status(struct dm_target *ti, status_type_t type, residency = policy_residency(cache->policy); - DMEMIT("%llu/%llu %u %u %u %u %u %u %llu %u ", + DMEMIT("%u %llu/%llu %u %llu/%llu %u %u %u %u %u %u %llu ", + (unsigned)(DM_CACHE_METADATA_BLOCK_SIZE >> SECTOR_SHIFT), (unsigned long long)(nr_blocks_metadata - nr_free_blocks_metadata), (unsigned long long)nr_blocks_metadata, + cache->sectors_per_block, + (unsigned long long) from_cblock(residency), + (unsigned long long) from_cblock(cache->cache_size), (unsigned) atomic_read(&cache->stats.read_hit), (unsigned) atomic_read(&cache->stats.read_miss), (unsigned) atomic_read(&cache->stats.write_hit), (unsigned) atomic_read(&cache->stats.write_miss), (unsigned) atomic_read(&cache->stats.demotion), (unsigned) atomic_read(&cache->stats.promotion), - (unsigned long long) from_cblock(residency), - cache->nr_dirty); + (unsigned long long) from_cblock(cache->nr_dirty)); if (writethrough_mode(&cache->features)) DMEMIT("1 writethrough "); @@ -2896,6 +2908,8 @@ static void cache_status(struct dm_target *ti, status_type_t type, } DMEMIT("2 migration_threshold %llu ", (unsigned long long) cache->migration_threshold); + + DMEMIT("%s ", dm_cache_policy_get_name(cache->policy)); if (sz < maxlen) { r = policy_emit_config_values(cache->policy, result + sz, maxlen - sz); if (r) @@ -3129,7 +3143,7 @@ static void cache_io_hints(struct dm_target *ti, struct queue_limits *limits) static struct target_type cache_target = { .name = "cache", - .version = {1, 2, 0}, + .version = {1, 3, 0}, .module = THIS_MODULE, .ctr = cache_ctr, .dtr = cache_dtr, |