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, struct xfs_bmbt_irec *imap);
16int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);
17xfs_fileoff_t xfs_iomap_eof_align_last_fsb(struct xfs_inode *ip,
18		xfs_fileoff_t end_fsb);
19
20int xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
21		struct xfs_bmbt_irec *, u16);
22
23static inline xfs_filblks_t
24xfs_aligned_fsb_count(
25	xfs_fileoff_t		offset_fsb,
26	xfs_filblks_t		count_fsb,
27	xfs_extlen_t		extsz)
28{
29	if (extsz) {
30		xfs_extlen_t	align;
31
32		div_u64_rem(offset_fsb, extsz, &align);
33		if (align)
34			count_fsb += align;
35		div_u64_rem(count_fsb, extsz, &align);
36		if (align)
37			count_fsb += extsz - align;
38	}
39
40	return count_fsb;
41}
42
43extern const struct iomap_ops xfs_buffered_write_iomap_ops;
44extern const struct iomap_ops xfs_direct_write_iomap_ops;
45extern const struct iomap_ops xfs_read_iomap_ops;
46extern const struct iomap_ops xfs_seek_iomap_ops;
47extern const struct iomap_ops xfs_xattr_iomap_ops;
48
49#endif /* __XFS_IOMAP_H__*/

 
 1/*
 2 * Copyright (c) 2003-2005 Silicon Graphics, Inc.
 3 * All Rights Reserved.
 4 *
 5 * This program is free software; you can redistribute it and/or
 6 * modify it under the terms of the GNU General Public License as
 7 * published by the Free Software Foundation.
 8 *
 9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
17 */
18#ifndef __XFS_IOMAP_H__
19#define __XFS_IOMAP_H__
20
 
 
21struct xfs_inode;
22struct xfs_bmbt_irec;
23
24extern int xfs_iomap_write_direct(struct xfs_inode *, xfs_off_t, size_t,
25			struct xfs_bmbt_irec *, int);
26extern int xfs_iomap_write_delay(struct xfs_inode *, xfs_off_t, size_t,
27			struct xfs_bmbt_irec *);
28extern int xfs_iomap_write_allocate(struct xfs_inode *, xfs_off_t, size_t,
29			struct xfs_bmbt_irec *);
30extern int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, size_t);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
31
32#endif /* __XFS_IOMAP_H__*/