416 struct cache {  struct
417 	struct cache_set	*set;  argument
418 	struct cache_sb		sb;  argument
419 	struct cache_sb_disk	*sb_disk;  argument
420 	struct bio		sb_bio;
421 	struct bio_vec		sb_bv[1];
445 	 * cached data in them, and we can't reuse them until after we write  argument
453 	size_t			fifo_last_bucket;
456 	struct bucket		*buckets;
465 	unsigned int		invalidate_needs_gc;
467 	bool			discard; /* Get rid of? */
492  * Flag bits, for how the cache set is shutting down, and what phase it's at:  argument
527 	struct cache		*cache;  member