ui_spare 638 fs/ufs/ufs_fs.h __fs32 ui_spare[2]; /* 0x78 reserved */ ui_spare 644 fs/ufs/ufs_fs.h __fs16 ui_spare; /* 0x7A unused */ ui_spare 679 fs/ufs/ufs_fs.h __fs64 ui_spare[3]; /* 232: Reserved; currently unused */