334 typedef struct xfs_perag {  struct
335 	struct xfs_mount *pag_mount;	/* owner filesystem */
336 	xfs_agnumber_t	pag_agno;	/* AG this structure belongs to */
337 	atomic_t	pag_ref;	/* perag reference count */
338 	char		pagf_init;	/* this agf's entry is initialized */
339 	char		pagi_init;	/* this agi's entry is initialized */
340 	char		pagf_metadata;	/* the agf is preferred to be metadata */
341 	char		pagi_inodeok;	/* The agi is ok for inodes */
342 	uint8_t		pagf_levels[XFS_BTNUM_AGF];
344 	bool		pagf_agflreset; /* agfl requires reset before use */
345 	uint32_t	pagf_flcount;	/* count of blocks in freelist */
346 	xfs_extlen_t	pagf_freeblks;	/* total free blocks */
347 	xfs_extlen_t	pagf_longest;	/* longest free space */
348 	uint32_t	pagf_btreeblks;	/* # of blocks held in AGF btrees */
349 	xfs_agino_t	pagi_freecount;	/* number of free inodes */
350 	xfs_agino_t	pagi_count;	/* number of allocated inodes */
357 	xfs_agino_t	pagl_pagino;
358 	xfs_agino_t	pagl_leftrec;
359 	xfs_agino_t	pagl_rightrec;
360 	spinlock_t	pagb_lock;	/* lock for pagb_tree */
361 	struct rb_root	pagb_tree;	/* ordered tree of busy extents */
362 	unsigned int	pagb_gen;	/* generation count for pagb_tree */
363 	wait_queue_head_t pagb_wait;	/* woken when pagb_gen changes */
388 } xfs_perag_t;  argument
392 	struct xfs_perag	*pag,  in xfs_perag_resv()  argument