343 typedef struct xfs_perag {  struct
344 	struct xfs_mount *pag_mount;	/* owner filesystem */
345 	xfs_agnumber_t	pag_agno;	/* AG this structure belongs to */
346 	atomic_t	pag_ref;	/* perag reference count */
347 	char		pagf_init;	/* this agf's entry is initialized */
348 	char		pagi_init;	/* this agi's entry is initialized */
349 	char		pagf_metadata;	/* the agf is preferred to be metadata */
350 	char		pagi_inodeok;	/* The agi is ok for inodes */
351 	uint8_t		pagf_levels[XFS_BTNUM_AGF];
353 	bool		pagf_agflreset; /* agfl requires reset before use */
354 	uint32_t	pagf_flcount;	/* count of blocks in freelist */
355 	xfs_extlen_t	pagf_freeblks;	/* total free blocks */
356 	xfs_extlen_t	pagf_longest;	/* longest free space */
357 	uint32_t	pagf_btreeblks;	/* # of blocks held in AGF btrees */
358 	xfs_agino_t	pagi_freecount;	/* number of free inodes */
359 	xfs_agino_t	pagi_count;	/* number of allocated inodes */
366 	xfs_agino_t	pagl_pagino;
367 	xfs_agino_t	pagl_leftrec;
368 	xfs_agino_t	pagl_rightrec;
374 	uint16_t	pag_checked;
375 	uint16_t	pag_sick;
376 	spinlock_t	pag_state_lock;
378 	spinlock_t	pagb_lock;	/* lock for pagb_tree */
379 	struct rb_root	pagb_tree;	/* ordered tree of busy extents */
380 	unsigned int	pagb_gen;	/* generation count for pagb_tree */
381 	wait_queue_head_t pagb_wait;	/* woken when pagb_gen changes */
383 	atomic_t        pagf_fstrms;    /* # of filestreams active in this AG */
385 	spinlock_t	pag_ici_lock;	/* incore inode cache lock */
386 	struct radix_tree_root pag_ici_root;	/* incore inode cache root */
387 	int		pag_ici_reclaimable;	/* reclaimable inodes */
388 	struct mutex	pag_ici_reclaim_lock;	/* serialisation point */
389 	unsigned long	pag_ici_reclaim_cursor;	/* reclaim restart point */
413 } xfs_perag_t;  argument
417 	struct xfs_perag	*pag,  in xfs_perag_resv()  argument