1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (c) 2003-2005 Silicon Graphics, Inc.
4*4882a593Smuzhiyun * All Rights Reserved.
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun #ifndef __XFS_IOMAP_H__
7*4882a593Smuzhiyun #define __XFS_IOMAP_H__
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/iomap.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun struct xfs_inode;
12*4882a593Smuzhiyun struct xfs_bmbt_irec;
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun int xfs_iomap_write_direct(struct xfs_inode *ip, xfs_fileoff_t offset_fsb,
15*4882a593Smuzhiyun xfs_fileoff_t count_fsb, struct xfs_bmbt_irec *imap);
16*4882a593Smuzhiyun int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);
17*4882a593Smuzhiyun xfs_fileoff_t xfs_iomap_eof_align_last_fsb(struct xfs_inode *ip,
18*4882a593Smuzhiyun xfs_fileoff_t end_fsb);
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun int xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
21*4882a593Smuzhiyun struct xfs_bmbt_irec *, u16);
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun static inline xfs_filblks_t
xfs_aligned_fsb_count(xfs_fileoff_t offset_fsb,xfs_filblks_t count_fsb,xfs_extlen_t extsz)24*4882a593Smuzhiyun xfs_aligned_fsb_count(
25*4882a593Smuzhiyun xfs_fileoff_t offset_fsb,
26*4882a593Smuzhiyun xfs_filblks_t count_fsb,
27*4882a593Smuzhiyun xfs_extlen_t extsz)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun if (extsz) {
30*4882a593Smuzhiyun xfs_extlen_t align;
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun div_u64_rem(offset_fsb, extsz, &align);
33*4882a593Smuzhiyun if (align)
34*4882a593Smuzhiyun count_fsb += align;
35*4882a593Smuzhiyun div_u64_rem(count_fsb, extsz, &align);
36*4882a593Smuzhiyun if (align)
37*4882a593Smuzhiyun count_fsb += extsz - align;
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun return count_fsb;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun extern const struct iomap_ops xfs_buffered_write_iomap_ops;
44*4882a593Smuzhiyun extern const struct iomap_ops xfs_direct_write_iomap_ops;
45*4882a593Smuzhiyun extern const struct iomap_ops xfs_read_iomap_ops;
46*4882a593Smuzhiyun extern const struct iomap_ops xfs_seek_iomap_ops;
47*4882a593Smuzhiyun extern const struct iomap_ops xfs_xattr_iomap_ops;
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun #endif /* __XFS_IOMAP_H__*/
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