xfs_bmap_util.h 2.6 KB

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  1. // SPDX-License-Identifier: GPL-2.0
  2. /*
  3. * Copyright (c) 2000-2006 Silicon Graphics, Inc.
  4. * All Rights Reserved.
  5. */
  6. #ifndef __XFS_BMAP_UTIL_H__
  7. #define __XFS_BMAP_UTIL_H__
  8. /* Kernel only BMAP related definitions and functions */
  9. struct xfs_bmbt_irec;
  10. struct xfs_extent_free_item;
  11. struct xfs_ifork;
  12. struct xfs_inode;
  13. struct xfs_mount;
  14. struct xfs_trans;
  15. struct xfs_bmalloca;
  16. #ifdef CONFIG_XFS_RT
  17. int xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
  18. #else /* !CONFIG_XFS_RT */
  19. /*
  20. * Attempts to allocate RT extents when RT is disable indicates corruption and
  21. * should trigger a shutdown.
  22. */
  23. static inline int
  24. xfs_bmap_rtalloc(struct xfs_bmalloca *ap)
  25. {
  26. return -EFSCORRUPTED;
  27. }
  28. #endif /* CONFIG_XFS_RT */
  29. int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
  30. xfs_fileoff_t start_fsb, xfs_fileoff_t length);
  31. struct kgetbmap {
  32. __s64 bmv_offset; /* file offset of segment in blocks */
  33. __s64 bmv_block; /* starting block (64-bit daddr_t) */
  34. __s64 bmv_length; /* length of segment, blocks */
  35. __s32 bmv_oflags; /* output flags */
  36. };
  37. int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
  38. struct kgetbmap *out);
  39. /* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
  40. int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp,
  41. struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz,
  42. int rt, int eof, int delay, int convert,
  43. xfs_fileoff_t *offp, xfs_extlen_t *lenp);
  44. void xfs_bmap_adjacent(struct xfs_bmalloca *ap);
  45. int xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip,
  46. int whichfork, struct xfs_bmbt_irec *rec,
  47. int *is_empty);
  48. /* preallocation and hole punch interface */
  49. int xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset,
  50. xfs_off_t len, int alloc_type);
  51. int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
  52. xfs_off_t len);
  53. int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
  54. xfs_off_t len);
  55. int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
  56. xfs_off_t len);
  57. /* EOF block manipulation functions */
  58. bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force);
  59. int xfs_free_eofblocks(struct xfs_inode *ip);
  60. int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
  61. struct xfs_swapext *sx);
  62. xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
  63. xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count);
  64. int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
  65. int whichfork, xfs_extnum_t *nextents,
  66. xfs_filblks_t *count);
  67. int xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset,
  68. xfs_off_t len);
  69. #endif /* __XFS_BMAP_UTIL_H__ */