| /* | |
| * Super block | |
| * Fits into a sector-sized buffer at address 0 of each allocation group. | |
| * Only the first of these is ever updated except during growfs. | |
| */ | |
| struct xfs_buf; | |
| struct xfs_mount; | |
| #define XFS_SB_MAGIC 0x58465342 /* 'XFSB' */ | |
| typedef struct xfs_sb | |
| { | |
| __u32 sb_magicnum; /* magic number == XFS_SB_MAGIC */ | |
| __u32 sb_blocksize; /* logical block size, bytes */ | |
| __u64 sb_dblocks; /* number of data blocks */ | |
| } xfs_sb_t; |