6 * Fits into a sector-sized buffer at address 0 of each allocation group.
7 * Only the first of these is ever updated except during growfs.
13 #define XFS_SB_MAGIC 0x58465342 /* 'XFSB' */
15 typedef struct xfs_sb
{
16 __u32 sb_magicnum
; /* magic number == XFS_SB_MAGIC */
17 __u32 sb_blocksize
; /* logical block size, bytes */
18 __u64 sb_dblocks
; /* number of data blocks */
21 #endif /* __XFS_SB_H */