-/*
- * Bmap root header, on-disk form only.
- */
-typedef struct xfs_bmdr_block {
- __be16 bb_level; /* 0 is a leaf */
- __be16 bb_numrecs; /* current # of data records */
-} xfs_bmdr_block_t;
-
-/*
- * Bmap btree record and extent descriptor.
- * l0:63 is an extent flag (value 1 indicates non-normal).
- * l0:9-62 are startoff.
- * l0:0-8 and l1:21-63 are startblock.
- * l1:0-20 are blockcount.
- */
-#define BMBT_EXNTFLAG_BITLEN 1
-#define BMBT_STARTOFF_BITLEN 54
-#define BMBT_STARTBLOCK_BITLEN 52
-#define BMBT_BLOCKCOUNT_BITLEN 21
-
-typedef struct xfs_bmbt_rec {
- __be64 l0, l1;
-} xfs_bmbt_rec_t;
-
-typedef __uint64_t xfs_bmbt_rec_base_t; /* use this for casts */
-typedef xfs_bmbt_rec_t xfs_bmdr_rec_t;
-
-typedef struct xfs_bmbt_rec_host {
- __uint64_t l0, l1;
-} xfs_bmbt_rec_host_t;
-
-/*
- * Values and macros for delayed-allocation startblock fields.
- */
-#define STARTBLOCKVALBITS 17
-#define STARTBLOCKMASKBITS (15 + XFS_BIG_BLKNOS * 20)
-#define DSTARTBLOCKMASKBITS (15 + 20)
-#define STARTBLOCKMASK \
- (((((xfs_fsblock_t)1) << STARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
-#define DSTARTBLOCKMASK \
- (((((xfs_dfsbno_t)1) << DSTARTBLOCKMASKBITS) - 1) << STARTBLOCKVALBITS)
-
-static inline int isnullstartblock(xfs_fsblock_t x)
-{
- return ((x) & STARTBLOCKMASK) == STARTBLOCKMASK;
-}
-
-static inline int isnulldstartblock(xfs_dfsbno_t x)
-{
- return ((x) & DSTARTBLOCKMASK) == DSTARTBLOCKMASK;
-}
-
-static inline xfs_fsblock_t nullstartblock(int k)
-{
- ASSERT(k < (1 << STARTBLOCKVALBITS));
- return STARTBLOCKMASK | (k);
-}
-
-static inline xfs_filblks_t startblockval(xfs_fsblock_t x)
-{
- return (xfs_filblks_t)((x) & ~STARTBLOCKMASK);
-}
-
-/*
- * Possible extent formats.
- */
-typedef enum {
- XFS_EXTFMT_NOSTATE = 0,
- XFS_EXTFMT_HASSTATE
-} xfs_exntfmt_t;
-
-/*
- * Possible extent states.
- */
-typedef enum {
- XFS_EXT_NORM, XFS_EXT_UNWRITTEN,
- XFS_EXT_DMAPI_OFFLINE, XFS_EXT_INVALID
-} xfs_exntst_t;
-