blob: fad11607c9adf3937d6fa739c2ede29c7d0a8bb2 [file] [log] [blame]
Darrick J. Wong3993bae2016-10-03 09:11:32 -07001/*
2 * Copyright (C) 2016 Oracle. All Rights Reserved.
3 *
4 * Author: Darrick J. Wong <darrick.wong@oracle.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it would be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
19 */
20#ifndef __XFS_REFLINK_H
21#define __XFS_REFLINK_H 1
22
Darrick J. Wong2a067052016-10-03 09:11:33 -070023extern int xfs_reflink_find_shared(struct xfs_mount *mp, xfs_agnumber_t agno,
24 xfs_agblock_t agbno, xfs_extlen_t aglen, xfs_agblock_t *fbno,
25 xfs_extlen_t *flen, bool find_maximal);
26extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip,
27 struct xfs_bmbt_irec *irec, bool *shared, bool *trimmed);
28
Christoph Hellwig3ba020b2016-10-20 15:53:50 +110029extern int xfs_reflink_reserve_cow(struct xfs_inode *ip,
30 struct xfs_bmbt_irec *imap, bool *shared);
Darrick J. Wong0613f162016-10-03 09:11:37 -070031extern int xfs_reflink_allocate_cow_range(struct xfs_inode *ip,
32 xfs_off_t offset, xfs_off_t count);
Darrick J. Wongef473662016-10-03 09:11:34 -070033extern bool xfs_reflink_find_cow_mapping(struct xfs_inode *ip, xfs_off_t offset,
34 struct xfs_bmbt_irec *imap, bool *need_alloc);
35extern int xfs_reflink_trim_irec_to_next_cow(struct xfs_inode *ip,
36 xfs_fileoff_t offset_fsb, struct xfs_bmbt_irec *imap);
Darrick J. Wong2a067052016-10-03 09:11:33 -070037
Darrick J. Wong43caeb12016-10-03 09:11:35 -070038extern int xfs_reflink_cancel_cow_blocks(struct xfs_inode *ip,
39 struct xfs_trans **tpp, xfs_fileoff_t offset_fsb,
40 xfs_fileoff_t end_fsb);
41extern int xfs_reflink_cancel_cow_range(struct xfs_inode *ip, xfs_off_t offset,
42 xfs_off_t count);
43extern int xfs_reflink_end_cow(struct xfs_inode *ip, xfs_off_t offset,
44 xfs_off_t count);
Darrick J. Wong174edb02016-10-03 09:11:39 -070045extern int xfs_reflink_recover_cow(struct xfs_mount *mp);
Christoph Hellwig5faaf4f2016-10-20 15:50:07 +110046extern int xfs_reflink_remap_range(struct file *file_in, loff_t pos_in,
47 struct file *file_out, loff_t pos_out, u64 len, bool is_dedupe);
Darrick J. Wong98cc2db2016-10-03 09:11:43 -070048extern int xfs_reflink_clear_inode_flag(struct xfs_inode *ip,
49 struct xfs_trans **tpp);
50extern int xfs_reflink_unshare(struct xfs_inode *ip, xfs_off_t offset,
51 xfs_off_t len);
Darrick J. Wong43caeb12016-10-03 09:11:35 -070052
Darrick J. Wong83104d42016-10-03 09:11:46 -070053extern bool xfs_reflink_has_real_cow_blocks(struct xfs_inode *ip);
54
Darrick J. Wong3993bae2016-10-03 09:11:32 -070055#endif /* __XFS_REFLINK_H */