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