517 typedef struct xfs_agf {  struct
521 	__be32		agf_magicnum;	/* magic number == XFS_AGF_MAGIC */
522 	__be32		agf_versionnum;	/* header version == XFS_AGF_VERSION */
523 	__be32		agf_seqno;	/* sequence # starting from 0 */
524 	__be32		agf_length;	/* size in blocks of a.g. */
528 	__be32		agf_bno_root;	/* bnobt root block */
529 	__be32		agf_cnt_root;	/* cntbt root block */
530 	__be32		agf_rmap_root;	/* rmapbt root block */
532 	__be32		agf_bno_level;	/* bnobt btree levels */
533 	__be32		agf_cnt_level;	/* cntbt btree levels */
534 	__be32		agf_rmap_level;	/* rmapbt btree levels */
536 	__be32		agf_flfirst;	/* first freelist block's index */
537 	__be32		agf_fllast;	/* last freelist block's index */
538 	__be32		agf_flcount;	/* count of blocks in freelist */
539 	__be32		agf_freeblks;	/* total free blocks */
564 } xfs_agf_t;  argument
566 #define XFS_AGF_CRC_OFF		offsetof(struct xfs_agf, agf_crc)  argument