372 struct cache {  struct
382 	struct dm_cache_metadata *cmd;  argument
397 	struct dm_dev *cache_dev;  argument
406 	 * Size of the cache device in blocks.  argument
408 	dm_cblock_t cache_size;  argument
413 	spinlock_t invalidation_lock;
414 	struct list_head invalidation_requests;
416 	sector_t migration_threshold;
417 	wait_queue_head_t migration_wait;
418 	atomic_t nr_allocated_migrations;
424 	atomic_t nr_io_migrations;
426 	struct bio_list deferred_bios;
428 	struct rw_semaphore quiesce_lock;
430 	struct dm_target_callbacks callbacks;
454 	 * cache_size entries, dirty if set  argument
460 	struct dm_cache_policy *policy;  argument
465 	struct cache_features features;  argument
467 	struct cache_stats stats;  argument
469 	bool need_tick_bio:1;
470 	bool sized:1;
471 	bool invalidate:1;
472 	bool commit_requested:1;
496 struct dm_cache_migration {  argument
498 	struct cache *cache;  argument
510 static bool writethrough_mode(struct cache *cache)  in writethrough_mode()
515 static bool writeback_mode(struct cache *cache)  in writeback_mode()
520 static inline bool passthrough_mode(struct cache *cache)  in passthrough_mode()
527 static void wake_deferred_bio_worker(struct cache *cache)  in wake_deferred_bio_worker()
532 static void wake_migration_worker(struct cache *cache)  in wake_migration_worker()
542 static struct dm_bio_prison_cell_v2 *alloc_prison_cell(struct cache *cache)  in alloc_prison_cell()
547 static void free_prison_cell(struct cache *cache, struct dm_bio_prison_cell_v2 *cell)  in free_prison_cell()
552 static struct dm_cache_migration *alloc_migration(struct cache *cache)  in alloc_migration()
568 	struct cache *cache = mg->cache;  in free_migration()  local
630 static void defer_bio(struct cache *cache, struct bio *bio)  in defer_bio()
641 static void defer_bios(struct cache *cache, struct bio_list *bios)  in defer_bios()
655 static bool bio_detain_shared(struct cache *cache, dm_oblock_t oblock, struct bio *bio)  in bio_detain_shared()
686 static bool is_dirty(struct cache *cache, dm_cblock_t b)  in is_dirty()
691 static void set_dirty(struct cache *cache, dm_cblock_t cblock)  in set_dirty()
703 static void force_set_dirty(struct cache *cache, dm_cblock_t cblock)  in force_set_dirty()
710 static void force_clear_dirty(struct cache *cache, dm_cblock_t cblock)  in force_clear_dirty()
722 static bool block_size_is_power_of_two(struct cache *cache)  in block_size_is_power_of_two()
738 static dm_block_t oblocks_per_dblock(struct cache *cache)  in oblocks_per_dblock()
750 static dm_dblock_t oblock_to_dblock(struct cache *cache, dm_oblock_t oblock)  in oblock_to_dblock()
756 static void set_discard(struct cache *cache, dm_dblock_t b)  in set_discard()
768 static void clear_discard(struct cache *cache, dm_dblock_t b)  in clear_discard()
777 static bool is_discarded(struct cache *cache, dm_dblock_t b)  in is_discarded()
789 static bool is_discarded_oblock(struct cache *cache, dm_oblock_t b)  in is_discarded_oblock()
805 static void remap_to_origin(struct cache *cache, struct bio *bio)  in remap_to_origin()
810 static void remap_to_cache(struct cache *cache, struct bio *bio,  in remap_to_cache()
827 static void check_if_tick_bio_needed(struct cache *cache, struct bio *bio)  in check_if_tick_bio_needed()
842 static void __remap_to_origin_clear_discard(struct cache *cache, struct bio *bio,  in __remap_to_origin_clear_discard()
852 static void remap_to_origin_clear_discard(struct cache *cache, struct bio *bio,  in remap_to_origin_clear_discard()
859 static void remap_to_cache_dirty(struct cache *cache, struct bio *bio,  in remap_to_cache_dirty()
870 static dm_oblock_t get_bio_block(struct cache *cache, struct bio *bio)  in get_bio_block()
882 static bool accountable_bio(struct cache *cache, struct bio *bio)  in accountable_bio()
887 static void accounted_begin(struct cache *cache, struct bio *bio)  in accounted_begin()
898 static void accounted_complete(struct cache *cache, struct bio *bio)  in accounted_complete()
905 static void accounted_request(struct cache *cache, struct bio *bio)  in accounted_request()
913 	struct cache *cache = context;  in issue_op()  local
921 static void remap_to_origin_and_cache(struct cache *cache, struct bio *bio,  in remap_to_origin_and_cache()
942 static enum cache_metadata_mode get_cache_mode(struct cache *cache)  in get_cache_mode()
947 static const char *cache_device_name(struct cache *cache)  in cache_device_name()
952 static void notify_mode_switch(struct cache *cache, enum cache_metadata_mode mode)  in notify_mode_switch()
965 static void set_cache_mode(struct cache *cache, enum cache_metadata_mode new_mode)  in set_cache_mode()
1006 static void abort_transaction(struct cache *cache)  in abort_transaction()
1025 static void metadata_operation_failed(struct cache *cache, const char *op, int r)  in metadata_operation_failed()
1035 static void load_stats(struct cache *cache)  in load_stats()
1046 static void save_stats(struct cache *cache)  in save_stats()
1085 static void inc_io_migrations(struct cache *cache)  in inc_io_migrations()
1090 static void dec_io_migrations(struct cache *cache)  in dec_io_migrations()
1100 static void calc_discard_block_range(struct cache *cache, struct bio *bio,  in calc_discard_block_range()
1116 static void prevent_background_work(struct cache *cache)  in prevent_background_work()
1123 static void allow_background_work(struct cache *cache)  in allow_background_work()
1130 static bool background_work_begin(struct cache *cache)  in background_work_begin()
1141 static void background_work_end(struct cache *cache)  in background_work_end()
1150 static bool bio_writes_complete_block(struct cache *cache, struct bio *bio)  in bio_writes_complete_block()
1156 static bool optimisable_bio(struct cache *cache, struct bio *bio, dm_oblock_t block)  in optimisable_bio()
1188 	struct cache *cache = mg->cache;  in copy()  local
1204 static void bio_drop_shared_lock(struct cache *cache, struct bio *bio)  in bio_drop_shared_lock()
1216 	struct cache *cache = mg->cache;  in overwrite_endio()  local
1262 	struct cache *cache = mg->cache;  in mg_complete()  local
1330 	struct cache *cache = mg->cache;  in mg_update_metadata()  local
1432 	struct cache *cache = mg->cache;  in mg_full_copy()  local
1485 	struct cache *cache = mg->cache;  in mg_lock_writes()  local
1516 static int mg_start(struct cache *cache, struct policy_work *op, struct bio *bio)  in mg_start()
1543 	struct cache *cache = mg->cache;  in invalidate_complete()  local
1564 static int invalidate_cblock(struct cache *cache, dm_cblock_t cblock)  in invalidate_cblock()
1591 	struct cache *cache = mg->cache;  in invalidate_remove()  local
1610 	struct cache *cache = mg->cache;  in invalidate_lock()  local
1642 static int invalidate_start(struct cache *cache, dm_cblock_t cblock,  in invalidate_start()
1668 static enum busy spare_migration_bandwidth(struct cache *cache)  in spare_migration_bandwidth()
1680 static void inc_hit_counter(struct cache *cache, struct bio *bio)  in inc_hit_counter()
1686 static void inc_miss_counter(struct cache *cache, struct bio *bio)  in inc_miss_counter()
1694 static int map_bio(struct cache *cache, struct bio *bio, dm_oblock_t block,  in map_bio()
1809 static bool process_bio(struct cache *cache, struct bio *bio)  in process_bio()
1822 static int commit(struct cache *cache, bool clean_shutdown)  in commit()
1842 	struct cache *cache = context;  in commit_op()  local
1852 static bool process_flush_bio(struct cache *cache, struct bio *bio)  in process_flush_bio()
1865 static bool process_discard_bio(struct cache *cache, struct bio *bio)  in process_discard_bio()
1885 	struct cache *cache = container_of(ws, struct cache, deferred_bio_worker);  in process_deferred_bios()  local
1918 static void requeue_deferred_bios(struct cache *cache)  in requeue_deferred_bios()
1939 	struct cache *cache = container_of(to_delayed_work(ws), struct cache, waker);  in do_waker()  local
1951 	struct cache *cache = container_of(ws, struct cache, migration_worker);  in check_migrations()  local
1981 static void destroy(struct cache *cache)  in destroy()
2028 	struct cache *cache = ti->private;  in cache_dtr()  local
2333 static int process_config_option(struct cache *cache, const char *key, const char *value)  in process_config_option()
2348 static int set_config_value(struct cache *cache, const char *key, const char *value)  in set_config_value()
2361 static int set_config_values(struct cache *cache, int argc, const char **argv)  in set_config_values()
2382 static int create_cache_policy(struct cache *cache, struct cache_args *ca,  in create_cache_policy()
2425 static void set_cache_size(struct cache *cache, dm_cblock_t size)  in set_cache_size()
2446 	struct cache *cache = container_of(cb, struct cache, callbacks);  in cache_is_congested()  local
2458 	struct cache *cache;  in cache_create()  local
2654 static int copy_ctr_args(struct cache *cache, int argc, const char **argv)  in copy_ctr_args()
2682 	struct cache *cache = NULL;  in cache_ctr()  local
2715 	struct cache *cache = ti->private;  in cache_map()  local
2747 	struct cache *cache = ti->private;  in cache_end_io()  local
2765 static int write_dirty_bitset(struct cache *cache)  in write_dirty_bitset()
2779 static int write_discard_bitset(struct cache *cache)  in write_discard_bitset()
2806 static int write_hints(struct cache *cache)  in write_hints()
2825 static bool sync_metadata(struct cache *cache)  in sync_metadata()
2857 	struct cache *cache = ti->private;  in cache_postsuspend()  local
2880 	struct cache *cache = context;  in load_mapping()  local
2902 	struct cache *cache;  member
2912 static void discard_load_info_init(struct cache *cache,  in discard_load_info_init()
2979 static dm_cblock_t get_cache_dev_size(struct cache *cache)  in get_cache_dev_size()
2986 static bool can_resize(struct cache *cache, dm_cblock_t new_size)  in can_resize()
3012 static int resize_cache_dev(struct cache *cache, dm_cblock_t new_size)  in resize_cache_dev()
3031 	struct cache *cache = ti->private;  in cache_preresume()  local
3092 	struct cache *cache = ti->private;  in cache_resume()  local
3119 	struct cache *cache = ti->private;  in cache_status()  local
3244 static int parse_cblock_range(struct cache *cache, const char *str,  in parse_cblock_range()
3281 static int validate_cblock_range(struct cache *cache, struct cblock_range *range)  in validate_cblock_range()
3313 static int request_invalidation(struct cache *cache, struct cblock_range *range)  in request_invalidation()
3335 static int process_invalidate_cblocks_message(struct cache *cache, unsigned count,  in process_invalidate_cblocks_message()
3379 	struct cache *cache = ti->private;  in cache_message()  local
3403 	struct cache *cache = ti->private;  in cache_iterate_devices()  local
3412 static void set_discard_limits(struct cache *cache, struct queue_limits *limits)  in set_discard_limits()
3424 	struct cache *cache = ti->private;  in cache_io_hints()  local