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
21/* base extent manipulation calls */
22#define BMAPI_READ	(1 << 0)	/* read extents */
23#define BMAPI_WRITE	(1 << 1)	/* create extents */
24#define BMAPI_ALLOCATE	(1 << 2)	/* delayed allocate to real extents */
25
26/* modifiers */
27#define BMAPI_IGNSTATE	(1 << 4)	/* ignore unwritten state on read */
28#define BMAPI_DIRECT	(1 << 5)	/* direct instead of buffered write */
29#define BMAPI_MMA	(1 << 6)	/* allocate for mmap write */
30#define BMAPI_TRYLOCK	(1 << 7)	/* non-blocking request */
31
32#define BMAPI_FLAGS \
33	{ BMAPI_READ,		"READ" }, \
34	{ BMAPI_WRITE,		"WRITE" }, \
35	{ BMAPI_ALLOCATE,	"ALLOCATE" }, \
36	{ BMAPI_IGNSTATE,	"IGNSTATE" }, \
37	{ BMAPI_DIRECT,		"DIRECT" }, \
38	{ BMAPI_TRYLOCK,	"TRYLOCK" }
39
40struct xfs_inode;
41struct xfs_bmbt_irec;
42
43extern int xfs_iomap(struct xfs_inode *, xfs_off_t, ssize_t, int,
44		     struct xfs_bmbt_irec *, int *, int *);
45extern int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, size_t);
46
47#endif /* __XFS_IOMAP_H__*/
48