xfs_fileoff_t bno, xfs_filblks_t len, int flags,
xfs_extnum_t nexts, xfs_fsblock_t *firstblock,
struct xfs_defer_ops *dfops, int *done);
-int xfs_bunmapi_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *del);
int xfs_bmap_del_extent_delay(struct xfs_inode *ip, int whichfork,
xfs_extnum_t *idx, struct xfs_bmbt_irec *got,
struct xfs_bmbt_irec *del);