projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 3993baeb DW |
2 | /* |
| 3 | * Copyright (C) 2016 Oracle. All Rights Reserved. | |
| 3993baeb | 4 | * Author: Darrick J. Wong <darrick.wong@oracle.com> |
| 3993baeb DW |
5 | */ |
| 6 | #ifndef __XFS_REFLINK_H | |
| 7 | #define __XFS_REFLINK_H 1 | |
| 8 | ||
| 66ae56a5 CH |
9 | static inline bool xfs_is_always_cow_inode(struct xfs_inode *ip) |
| 10 | { | |
| ebd9027d | 11 | return ip->i_mount->m_always_cow && xfs_has_reflink(ip->i_mount); |
| 66ae56a5 CH |
12 | } |
| 13 | ||
| 14 | static inline bool xfs_is_cow_inode(struct xfs_inode *ip) | |
| 15 | { | |
| 16 | return xfs_is_reflink_inode(ip) || xfs_is_always_cow_inode(ip); | |
| 17 | } | |
| 18 | ||
| 92ff7285 DW |
19 | extern int xfs_reflink_find_shared(struct xfs_mount *mp, struct xfs_trans *tp, |
| 20 | xfs_agnumber_t agno, xfs_agblock_t agbno, xfs_extlen_t aglen, | |
| 21 | xfs_agblock_t *fbno, xfs_extlen_t *flen, bool find_maximal); | |
| 2a06705c | 22 | extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip, |
| d392bc81 | 23 | struct xfs_bmbt_irec *irec, bool *shared); |
| aa124436 | 24 | int xfs_bmap_trim_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap, |
| 66ae56a5 | 25 | bool *shared); |
| 2a06705c | 26 | |
| ffb375a8 CH |
27 | int xfs_reflink_allocate_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap, |
| 28 | struct xfs_bmbt_irec *cmap, bool *shared, uint *lockmode, | |
| affe250a | 29 | bool convert_now); |
| 5eda4300 DW |
30 | extern int xfs_reflink_convert_cow(struct xfs_inode *ip, xfs_off_t offset, |
| 31 | xfs_off_t count); | |
| 2a06705c | 32 | |
| 43caeb18 DW |
33 | extern int xfs_reflink_cancel_cow_blocks(struct xfs_inode *ip, |
| 34 | struct xfs_trans **tpp, xfs_fileoff_t offset_fsb, | |
| 3802a345 | 35 | xfs_fileoff_t end_fsb, bool cancel_real); |
| 43caeb18 | 36 | extern int xfs_reflink_cancel_cow_range(struct xfs_inode *ip, xfs_off_t offset, |
| 3802a345 | 37 | xfs_off_t count, bool cancel_real); |
| 43caeb18 DW |
38 | extern int xfs_reflink_end_cow(struct xfs_inode *ip, xfs_off_t offset, |
| 39 | xfs_off_t count); | |
| 174edb0e | 40 | extern int xfs_reflink_recover_cow(struct xfs_mount *mp); |
| 3f68c1f5 | 41 | extern loff_t xfs_reflink_remap_range(struct file *file_in, loff_t pos_in, |
| 42ec3d4c | 42 | struct file *file_out, loff_t pos_out, loff_t len, |
| a91ae49b | 43 | unsigned int remap_flags); |
| ea7cdd7b DW |
44 | extern int xfs_reflink_inode_has_shared_extents(struct xfs_trans *tp, |
| 45 | struct xfs_inode *ip, bool *has_shared); | |
| 98cc2db5 DW |
46 | extern int xfs_reflink_clear_inode_flag(struct xfs_inode *ip, |
| 47 | struct xfs_trans **tpp); | |
| 48 | extern int xfs_reflink_unshare(struct xfs_inode *ip, xfs_off_t offset, | |
| 49 | xfs_off_t len); | |
| 3fc9f5e4 DW |
50 | extern int xfs_reflink_remap_prep(struct file *file_in, loff_t pos_in, |
| 51 | struct file *file_out, loff_t pos_out, loff_t *len, | |
| 52 | unsigned int remap_flags); | |
| 53 | extern int xfs_reflink_remap_blocks(struct xfs_inode *src, loff_t pos_in, | |
| 54 | struct xfs_inode *dest, loff_t pos_out, loff_t remap_len, | |
| 55 | loff_t *remapped); | |
| 56 | extern int xfs_reflink_update_dest(struct xfs_inode *dest, xfs_off_t newlen, | |
| 57 | xfs_extlen_t cowextsize, unsigned int remap_flags); | |
| 43caeb18 | 58 | |
| 3993baeb | 59 | #endif /* __XFS_REFLINK_H */ |