611 typedef struct xfs_agi {  struct
615 	__be32		agi_magicnum;	/* magic number == XFS_AGI_MAGIC */
616 	__be32		agi_versionnum;	/* header version == XFS_AGI_VERSION */
617 	__be32		agi_seqno;	/* sequence # starting from 0 */
618 	__be32		agi_length;	/* size in blocks of a.g. */
624 	__be32		agi_count;	/* count of allocated inodes */
625 	__be32		agi_root;	/* root of inode btree */
626 	__be32		agi_level;	/* levels in inode btree */
627 	__be32		agi_freecount;	/* number of free inodes */
651 } xfs_agi_t;  argument
653 #define XFS_AGI_CRC_OFF		offsetof(struct xfs_agi, agi_crc)  argument