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xfs_reflink.h

xfs_reflink.h 2.2 KB
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  1. // SPDX-License-Identifier: GPL-2.0+
    2. 

  2. /*
    3. 

  3.  * Copyright (C) 2016 Oracle.  All Rights Reserved.
    4. 

  4.  * Author: Darrick J. Wong <darrick.wong@oracle.com>
    5. 

  5.  */
    6. 

  6. #ifndef __XFS_REFLINK_H
    7. 

  7. #define __XFS_REFLINK_H 1
    8. 

  8. 

  9. extern int xfs_reflink_find_shared(struct xfs_mount *mp, struct xfs_trans *tp,
    10. 

  10. 		xfs_agnumber_t agno, xfs_agblock_t agbno, xfs_extlen_t aglen,
    11. 

  11. 		xfs_agblock_t *fbno, xfs_extlen_t *flen, bool find_maximal);
    12. 

  12. extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip,
    13. 

  13. 		struct xfs_bmbt_irec *irec, bool *shared);
    14. 

  14. 

  15. extern int xfs_reflink_reserve_cow(struct xfs_inode *ip,
    16. 

  16. 		struct xfs_bmbt_irec *imap);
    17. 

  17. extern int xfs_reflink_allocate_cow(struct xfs_inode *ip,
    18. 

  18. 		struct xfs_bmbt_irec *imap, bool *shared, uint *lockmode);
    19. 

  19. extern int xfs_reflink_convert_cow(struct xfs_inode *ip, xfs_off_t offset,
    20. 

  20. 		xfs_off_t count);
    21. 

  21. 

  22. extern int xfs_reflink_cancel_cow_blocks(struct xfs_inode *ip,
    23. 

  23. 		struct xfs_trans **tpp, xfs_fileoff_t offset_fsb,
    24. 

  24. 		xfs_fileoff_t end_fsb, bool cancel_real);
    25. 

  25. extern int xfs_reflink_cancel_cow_range(struct xfs_inode *ip, xfs_off_t offset,
    26. 

  26. 		xfs_off_t count, bool cancel_real);
    27. 

  27. extern int xfs_reflink_end_cow(struct xfs_inode *ip, xfs_off_t offset,
    28. 

  28. 		xfs_off_t count);
    29. 

  29. extern int xfs_reflink_recover_cow(struct xfs_mount *mp);
    30. 

  30. extern loff_t xfs_reflink_remap_range(struct file *file_in, loff_t pos_in,
    31. 

  31. 		struct file *file_out, loff_t pos_out, loff_t len,
    32. 

  32. 		unsigned int remap_flags);
    33. 

  33. extern int xfs_reflink_inode_has_shared_extents(struct xfs_trans *tp,
    34. 

  34. 		struct xfs_inode *ip, bool *has_shared);
    35. 

  35. extern int xfs_reflink_clear_inode_flag(struct xfs_inode *ip,
    36. 

  36. 		struct xfs_trans **tpp);
    37. 

  37. extern int xfs_reflink_unshare(struct xfs_inode *ip, xfs_off_t offset,
    38. 

  38. 		xfs_off_t len);
    39. 

  39. extern int xfs_reflink_remap_prep(struct file *file_in, loff_t pos_in,
    40. 

  40. 		struct file *file_out, loff_t pos_out, loff_t *len,
    41. 

  41. 		unsigned int remap_flags);
    42. 

  42. extern int xfs_reflink_remap_blocks(struct xfs_inode *src, loff_t pos_in,
    43. 

  43. 		struct xfs_inode *dest, loff_t pos_out, loff_t remap_len,
    44. 

  44. 		loff_t *remapped);
    45. 

  45. extern int xfs_reflink_update_dest(struct xfs_inode *dest, xfs_off_t newlen,
    46. 

  46. 		xfs_extlen_t cowextsize, unsigned int remap_flags);
    47. 

  47. extern void xfs_reflink_remap_unlock(struct file *file_in,
    48. 

  48. 		struct file *file_out);
    49. 

  49. 

  50. #endif /* __XFS_REFLINK_H */
    51.