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_allocate(struct xfs_inode *, int, xfs_off_t,
17 			struct xfs_bmbt_irec *, unsigned int *);
18 int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);
19 
20 void xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
21 		struct xfs_bmbt_irec *);
22 xfs_extlen_t xfs_eof_alignment(struct xfs_inode *ip, xfs_extlen_t extsize);
23 
24 static inline xfs_filblks_t
xfs_aligned_fsb_count(xfs_fileoff_t offset_fsb,xfs_filblks_t count_fsb,xfs_extlen_t extsz)25 xfs_aligned_fsb_count(
26 	xfs_fileoff_t		offset_fsb,
27 	xfs_filblks_t		count_fsb,
28 	xfs_extlen_t		extsz)
29 {
30 	if (extsz) {
31 		xfs_extlen_t	align;
32 
33 		div_u64_rem(offset_fsb, extsz, &align);
34 		if (align)
35 			count_fsb += align;
36 		div_u64_rem(count_fsb, extsz, &align);
37 		if (align)
38 			count_fsb += extsz - align;
39 	}
40 
41 	return count_fsb;
42 }
43 
44 extern const struct iomap_ops xfs_iomap_ops;
45 extern const struct iomap_ops xfs_xattr_iomap_ops;
46 
47 #endif /* __XFS_IOMAP_H__*/
48