380 struct cache {  struct
381 	struct cache_set	*set;  argument
382 	struct cache_sb		sb;  argument
383 	struct bio		sb_bio;
384 	struct bio_vec		sb_bv[1];
408 	 * cached data in them, and we can't reuse them until after we write  argument
416 	size_t			fifo_last_bucket;
419 	struct bucket		*buckets;
428 	unsigned		invalidate_needs_gc:1;
430 	bool			discard; /* Get rid of? */
454  * Flag bits, for how the cache set is shutting down, and what phase it's at:  argument
484 	struct cache		*cache[MAX_CACHES_PER_SET];  member