101 struct bufarea {  struct
102 	struct bufarea	*b_next;		/* free list queue */  argument
103 	struct bufarea	*b_prev;		/* free list queue */  argument
122 extern struct bufarea sblk;	/* file system superblock */  argument
123 extern struct bufarea cgblk;	/* cylinder group blocks */
124 extern struct bufarea *pbp;	/* pointer to inode data in buffer pool */
125 extern struct bufarea *pdirbp;	/* pointer to directory data in buffer pool */
520 void		brelse(struct bufarea *);
543 void		dirty(struct bufarea *);
554 void		flush(int, struct bufarea *);
562 struct bufarea	*getblk(struct bufarea *, daddr32_t, size_t);
563 struct bufarea	*getdatablk(daddr32_t, size_t size);
574 void		initbarea(struct bufarea *);