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- #ifndef __XFS_BMAP_BTREE_H__
- #define __XFS_BMAP_BTREE_H__
- struct xfs_btree_cur;
- struct xfs_btree_block;
- struct xfs_mount;
- struct xfs_inode;
- struct xfs_trans;
- #define XFS_BMBT_BLOCK_LEN(mp) \
- (xfs_has_crc(((mp))) ? \
- XFS_BTREE_LBLOCK_CRC_LEN : XFS_BTREE_LBLOCK_LEN)
- #define XFS_BMBT_REC_ADDR(mp, block, index) \
- ((xfs_bmbt_rec_t *) \
- ((char *)(block) + \
- XFS_BMBT_BLOCK_LEN(mp) + \
- ((index) - 1) * sizeof(xfs_bmbt_rec_t)))
- #define XFS_BMBT_KEY_ADDR(mp, block, index) \
- ((xfs_bmbt_key_t *) \
- ((char *)(block) + \
- XFS_BMBT_BLOCK_LEN(mp) + \
- ((index) - 1) * sizeof(xfs_bmbt_key_t)))
- #define XFS_BMBT_PTR_ADDR(mp, block, index, maxrecs) \
- ((xfs_bmbt_ptr_t *) \
- ((char *)(block) + \
- XFS_BMBT_BLOCK_LEN(mp) + \
- (maxrecs) * sizeof(xfs_bmbt_key_t) + \
- ((index) - 1) * sizeof(xfs_bmbt_ptr_t)))
- #define XFS_BMDR_REC_ADDR(block, index) \
- ((xfs_bmdr_rec_t *) \
- ((char *)(block) + \
- sizeof(struct xfs_bmdr_block) + \
- ((index) - 1) * sizeof(xfs_bmdr_rec_t)))
- #define XFS_BMDR_KEY_ADDR(block, index) \
- ((xfs_bmdr_key_t *) \
- ((char *)(block) + \
- sizeof(struct xfs_bmdr_block) + \
- ((index) - 1) * sizeof(xfs_bmdr_key_t)))
- #define XFS_BMDR_PTR_ADDR(block, index, maxrecs) \
- ((xfs_bmdr_ptr_t *) \
- ((char *)(block) + \
- sizeof(struct xfs_bmdr_block) + \
- (maxrecs) * sizeof(xfs_bmdr_key_t) + \
- ((index) - 1) * sizeof(xfs_bmdr_ptr_t)))
- #define XFS_BMAP_BROOT_PTR_ADDR(mp, bb, i, sz) \
- XFS_BMBT_PTR_ADDR(mp, bb, i, xfs_bmbt_maxrecs(mp, sz, 0))
- #define XFS_BMAP_BROOT_SPACE_CALC(mp, nrecs) \
- (int)(XFS_BMBT_BLOCK_LEN(mp) + \
- ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t))))
- #define XFS_BMAP_BROOT_SPACE(mp, bb) \
- (XFS_BMAP_BROOT_SPACE_CALC(mp, be16_to_cpu((bb)->bb_numrecs)))
- #define XFS_BMDR_SPACE_CALC(nrecs) \
- (int)(sizeof(xfs_bmdr_block_t) + \
- ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t))))
- #define XFS_BMAP_BMDR_SPACE(bb) \
- (XFS_BMDR_SPACE_CALC(be16_to_cpu((bb)->bb_numrecs)))
- #define XFS_BM_MAXLEVELS(mp,w) ((mp)->m_bm_maxlevels[(w)])
- extern void xfs_bmdr_to_bmbt(struct xfs_inode *, xfs_bmdr_block_t *, int,
- struct xfs_btree_block *, int);
- void xfs_bmbt_disk_set_all(struct xfs_bmbt_rec *r, struct xfs_bmbt_irec *s);
- extern xfs_filblks_t xfs_bmbt_disk_get_blockcount(const struct xfs_bmbt_rec *r);
- extern xfs_fileoff_t xfs_bmbt_disk_get_startoff(const struct xfs_bmbt_rec *r);
- void xfs_bmbt_disk_get_all(const struct xfs_bmbt_rec *r,
- struct xfs_bmbt_irec *s);
- extern void xfs_bmbt_to_bmdr(struct xfs_mount *, struct xfs_btree_block *, int,
- xfs_bmdr_block_t *, int);
- extern int xfs_bmbt_get_maxrecs(struct xfs_btree_cur *, int level);
- extern int xfs_bmdr_maxrecs(int blocklen, int leaf);
- extern int xfs_bmbt_maxrecs(struct xfs_mount *, int blocklen, int leaf);
- extern int xfs_bmbt_change_owner(struct xfs_trans *tp, struct xfs_inode *ip,
- int whichfork, xfs_ino_t new_owner,
- struct list_head *buffer_list);
- extern struct xfs_btree_cur *xfs_bmbt_init_cursor(struct xfs_mount *,
- struct xfs_trans *, struct xfs_inode *, int);
- extern unsigned long long xfs_bmbt_calc_size(struct xfs_mount *mp,
- unsigned long long len);
- unsigned int xfs_bmbt_maxlevels_ondisk(void);
- int __init xfs_bmbt_init_cur_cache(void);
- void xfs_bmbt_destroy_cur_cache(void);
- #endif /* __XFS_BMAP_BTREE_H__ */
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