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
11 struct xfs_inode;
12 struct xfs_bmbt_irec;
13
14 int xfs_iomap_write_direct(struct xfs_inode *, xfs_off_t, size_t,
15 struct xfs_bmbt_irec *, int);
16 int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);
17
18 int xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
19 struct xfs_bmbt_irec *, bool shared);
20 xfs_extlen_t xfs_eof_alignment(struct xfs_inode *ip, xfs_extlen_t extsize);
21
22 static inline xfs_filblks_t
xfs_aligned_fsb_count(xfs_fileoff_t offset_fsb,xfs_filblks_t count_fsb,xfs_extlen_t extsz)23 xfs_aligned_fsb_count(
24 xfs_fileoff_t offset_fsb,
25 xfs_filblks_t count_fsb,
26 xfs_extlen_t extsz)
27 {
28 if (extsz) {
29 xfs_extlen_t align;
30
31 div_u64_rem(offset_fsb, extsz, &align);
32 if (align)
33 count_fsb += align;
34 div_u64_rem(count_fsb, extsz, &align);
35 if (align)
36 count_fsb += extsz - align;
37 }
38
39 return count_fsb;
40 }
41
42 extern const struct iomap_ops xfs_iomap_ops;
43 extern const struct iomap_ops xfs_seek_iomap_ops;
44 extern const struct iomap_ops xfs_xattr_iomap_ops;
45
46 #endif /* __XFS_IOMAP_H__*/
47
