395 struct cache {  struct
396 	struct cache_set	*set;  argument
397 	struct cache_sb		sb;  argument
398 	struct bio		sb_bio;
399 	struct bio_vec		sb_bv[1];
423 	 * cached data in them, and we can't reuse them until after we write  argument
431 	size_t			fifo_last_bucket;
434 	struct bucket		*buckets;
443 	unsigned		invalidate_needs_gc:1;
445 	bool			discard; /* Get rid of? */
447 	struct journal_device	journal;
471  * Flag bits, for how the cache set is shutting down, and what phase it's at:  argument
501 	struct cache		*cache[MAX_CACHES_PER_SET];  member