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Linux kernel mirror (for testing)
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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2003-2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6#ifndef __XFS_IOMAP_H__
7#define __XFS_IOMAP_H__
8
9#include <linux/iomap.h>
10
11struct xfs_inode;
12struct xfs_bmbt_irec;
13
14int xfs_iomap_write_direct(struct xfs_inode *ip, xfs_fileoff_t offset_fsb,
15 xfs_fileoff_t count_fsb, unsigned int flags,
16 struct xfs_bmbt_irec *imap);
17int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);
18xfs_fileoff_t xfs_iomap_eof_align_last_fsb(struct xfs_inode *ip,
19 xfs_fileoff_t end_fsb);
20
21int xfs_bmbt_to_iomap(struct xfs_inode *ip, struct iomap *iomap,
22 struct xfs_bmbt_irec *imap, unsigned int mapping_flags,
23 u16 iomap_flags);
24
25int xfs_zero_range(struct xfs_inode *ip, loff_t pos, loff_t len,
26 bool *did_zero);
27int xfs_truncate_page(struct xfs_inode *ip, loff_t pos, bool *did_zero);
28
29static inline xfs_filblks_t
30xfs_aligned_fsb_count(
31 xfs_fileoff_t offset_fsb,
32 xfs_filblks_t count_fsb,
33 xfs_extlen_t extsz)
34{
35 if (extsz) {
36 xfs_extlen_t align;
37
38 div_u64_rem(offset_fsb, extsz, &align);
39 if (align)
40 count_fsb += align;
41 div_u64_rem(count_fsb, extsz, &align);
42 if (align)
43 count_fsb += extsz - align;
44 }
45
46 return count_fsb;
47}
48
49extern const struct iomap_ops xfs_buffered_write_iomap_ops;
50extern const struct iomap_ops xfs_direct_write_iomap_ops;
51extern const struct iomap_ops xfs_read_iomap_ops;
52extern const struct iomap_ops xfs_seek_iomap_ops;
53extern const struct iomap_ops xfs_xattr_iomap_ops;
54
55#endif /* __XFS_IOMAP_H__*/