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review.shift-gmbh.com / SHIFTPHONES / kernel / common / 3fc9f5e409319e994d113cf1327ba6ab147423c2 / . / fs / xfs / xfs_reflink.h
blob: 28a84edda88998fbcb68bee4f41cff851db01c28 [file] [log] [blame]
Dave Chinner0b61f8a2018-06-05 19:42:14 -0700[diff] [blame]1// SPDX-License-Identifier: GPL-2.0+
Darrick J. Wong3993bae2016-10-03 09:11:32 -0700[diff] [blame]2/*
3 * Copyright (C) 2016 Oracle. All Rights Reserved.
Darrick J. Wong3993bae2016-10-03 09:11:32 -0700[diff] [blame]4 * Author: Darrick J. Wong <darrick.wong@oracle.com>
Darrick J. Wong3993bae2016-10-03 09:11:32 -0700[diff] [blame]5 */
6#ifndef __XFS_REFLINK_H
7#define __XFS_REFLINK_H 1
8
Darrick J. Wong92ff7282017-06-16 11:00:10 -0700[diff] [blame]9extern int xfs_reflink_find_shared(struct xfs_mount *mp, struct xfs_trans *tp,
10 xfs_agnumber_t agno, xfs_agblock_t agbno, xfs_extlen_t aglen,
11 xfs_agblock_t *fbno, xfs_extlen_t *flen, bool find_maximal);
Darrick J. Wong2a067052016-10-03 09:11:33 -0700[diff] [blame]12extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip,
13 struct xfs_bmbt_irec *irec, bool *shared, bool *trimmed);
14
Christoph Hellwig3ba020b2016-10-20 15:53:50 +1100[diff] [blame]15extern int xfs_reflink_reserve_cow(struct xfs_inode *ip,
16 struct xfs_bmbt_irec *imap, bool *shared);
Christoph Hellwig3c68d442017-02-06 10:51:03 -0800[diff] [blame]17extern int xfs_reflink_allocate_cow(struct xfs_inode *ip,
18 struct xfs_bmbt_irec *imap, bool *shared, uint *lockmode);
Darrick J. Wong5eda4302017-02-02 15:14:02 -0800[diff] [blame]19extern int xfs_reflink_convert_cow(struct xfs_inode *ip, xfs_off_t offset,
20 xfs_off_t count);
Darrick J. Wong2a067052016-10-03 09:11:33 -0700[diff] [blame]21
Darrick J. Wong43caeb12016-10-03 09:11:35 -0700[diff] [blame]22extern int xfs_reflink_cancel_cow_blocks(struct xfs_inode *ip,
23 struct xfs_trans **tpp, xfs_fileoff_t offset_fsb,
Christoph Hellwig3802a342017-03-07 16:45:58 -0800[diff] [blame]24 xfs_fileoff_t end_fsb, bool cancel_real);
Darrick J. Wong43caeb12016-10-03 09:11:35 -0700[diff] [blame]25extern int xfs_reflink_cancel_cow_range(struct xfs_inode *ip, xfs_off_t offset,
Christoph Hellwig3802a342017-03-07 16:45:58 -0800[diff] [blame]26 xfs_off_t count, bool cancel_real);
Darrick J. Wong43caeb12016-10-03 09:11:35 -0700[diff] [blame]27extern int xfs_reflink_end_cow(struct xfs_inode *ip, xfs_off_t offset,
28 xfs_off_t count);
Darrick J. Wong174edb02016-10-03 09:11:39 -0700[diff] [blame]29extern int xfs_reflink_recover_cow(struct xfs_mount *mp);
Darrick J. Wong3f68c1f2018-10-30 10:47:06 +1100[diff] [blame]30extern loff_t xfs_reflink_remap_range(struct file *file_in, loff_t pos_in,
Darrick J. Wong42ec3d42018-10-30 10:41:49 +1100[diff] [blame]31 struct file *file_out, loff_t pos_out, loff_t len,
Darrick J. Wonga91ae49b2018-10-30 10:41:28 +1100[diff] [blame]32 unsigned int remap_flags);
Darrick J. Wongea7cdd72017-06-16 11:00:11 -0700[diff] [blame]33extern int xfs_reflink_inode_has_shared_extents(struct xfs_trans *tp,
34 struct xfs_inode *ip, bool *has_shared);
Darrick J. Wong98cc2db2016-10-03 09:11:43 -0700[diff] [blame]35extern int xfs_reflink_clear_inode_flag(struct xfs_inode *ip,
36 struct xfs_trans **tpp);
37extern int xfs_reflink_unshare(struct xfs_inode *ip, xfs_off_t offset,
38 xfs_off_t len);
Darrick J. Wong3fc9f5e2018-10-30 10:47:26 +1100[diff] [blame^]39extern int xfs_reflink_remap_prep(struct file *file_in, loff_t pos_in,
40 struct file *file_out, loff_t pos_out, loff_t *len,
41 unsigned int remap_flags);
42extern int xfs_reflink_remap_blocks(struct xfs_inode *src, loff_t pos_in,
43 struct xfs_inode *dest, loff_t pos_out, loff_t remap_len,
44 loff_t *remapped);
45extern int xfs_reflink_update_dest(struct xfs_inode *dest, xfs_off_t newlen,
46 xfs_extlen_t cowextsize, unsigned int remap_flags);
47extern void xfs_reflink_remap_unlock(struct file *file_in,
48 struct file *file_out);
Darrick J. Wong43caeb12016-10-03 09:11:35 -0700[diff] [blame]49
Darrick J. Wong3993bae2016-10-03 09:11:32 -0700[diff] [blame]50#endif /* __XFS_REFLINK_H */