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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;
13struct xfs_zone_alloc_ctx;
14
15int xfs_iomap_write_direct(struct xfs_inode *ip, xfs_fileoff_t offset_fsb,
16 xfs_fileoff_t count_fsb, unsigned int flags,
17 struct xfs_bmbt_irec *imap, u64 *sequence);
18int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);
19xfs_fileoff_t xfs_iomap_eof_align_last_fsb(struct xfs_inode *ip,
20 xfs_fileoff_t end_fsb);
21
22u64 xfs_iomap_inode_sequence(struct xfs_inode *ip, u16 iomap_flags);
23int xfs_bmbt_to_iomap(struct xfs_inode *ip, struct iomap *iomap,
24 struct xfs_bmbt_irec *imap, unsigned int mapping_flags,
25 u16 iomap_flags, u64 sequence_cookie);
26
27int xfs_zero_range(struct xfs_inode *ip, loff_t pos, loff_t len,
28 struct xfs_zone_alloc_ctx *ac, bool *did_zero);
29int xfs_truncate_page(struct xfs_inode *ip, loff_t pos,
30 struct xfs_zone_alloc_ctx *ac, bool *did_zero);
31
32static inline xfs_filblks_t
33xfs_aligned_fsb_count(
34 xfs_fileoff_t offset_fsb,
35 xfs_filblks_t count_fsb,
36 xfs_extlen_t extsz)
37{
38 if (extsz) {
39 xfs_extlen_t align;
40
41 div_u64_rem(offset_fsb, extsz, &align);
42 if (align)
43 count_fsb += align;
44 div_u64_rem(count_fsb, extsz, &align);
45 if (align)
46 count_fsb += extsz - align;
47 }
48
49 return count_fsb;
50}
51
52extern const struct iomap_ops xfs_buffered_write_iomap_ops;
53extern const struct iomap_ops xfs_direct_write_iomap_ops;
54extern const struct iomap_ops xfs_zoned_direct_write_iomap_ops;
55extern const struct iomap_ops xfs_read_iomap_ops;
56extern const struct iomap_ops xfs_seek_iomap_ops;
57extern const struct iomap_ops xfs_xattr_iomap_ops;
58extern const struct iomap_ops xfs_dax_write_iomap_ops;
59
60#endif /* __XFS_IOMAP_H__*/