[net-next-2.6.git] / fs / xfs / xfs_iomap.h

/*
 * Copyright (c) 2003-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_IOMAP_H__
#define __XFS_IOMAP_H__

/* base extent manipulation calls */
#define BMAPI_READ	(1 << 0)	/* read extents */
#define BMAPI_WRITE	(1 << 1)	/* create extents */
#define BMAPI_ALLOCATE	(1 << 2)	/* delayed allocate to real extents */

/* modifiers */
#define BMAPI_IGNSTATE	(1 << 4)	/* ignore unwritten state on read */
#define BMAPI_DIRECT	(1 << 5)	/* direct instead of buffered write */
#define BMAPI_MMA	(1 << 6)	/* allocate for mmap write */
#define BMAPI_TRYLOCK	(1 << 7)	/* non-blocking request */

#define BMAPI_FLAGS \
	{ BMAPI_READ,		"READ" }, \
	{ BMAPI_WRITE,		"WRITE" }, \
	{ BMAPI_ALLOCATE,	"ALLOCATE" }, \
	{ BMAPI_IGNSTATE,	"IGNSTATE" }, \
	{ BMAPI_DIRECT,		"DIRECT" }, \
	{ BMAPI_TRYLOCK,	"TRYLOCK" }

struct xfs_inode;
struct xfs_bmbt_irec;

extern int xfs_iomap(struct xfs_inode *, xfs_off_t, ssize_t, int,
		     struct xfs_bmbt_irec *, int *, int *);
extern int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, size_t);

#endif /* __XFS_IOMAP_H__*/
Commit	Line	Data
1da177e4	1	/*
7b718769 NS	2	* Copyright (c) 2003-2005 Silicon Graphics, Inc.
7b718769 NS	3	* All Rights Reserved.
1da177e4	4	*
7b718769 NS	5	* This program is free software; you can redistribute it and/or
7b718769 NS	6	* modify it under the terms of the GNU General Public License as
1da177e4 LT	7	* published by the Free Software Foundation.
1da177e4 LT	8	*
7b718769 NS	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.
1da177e4	13	*
7b718769 NS	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
1da177e4	17	*/
1da177e4 LT	18	#ifndef __XFS_IOMAP_H__
	19	#define __XFS_IOMAP_H__
	20
807cbbdb CH	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 */
1da177e4	31
0b1b213f CH	32	#define BMAPI_FLAGS \
	33	{ BMAPI_READ, "READ" }, \
	34	{ BMAPI_WRITE, "WRITE" }, \
	35	{ BMAPI_ALLOCATE, "ALLOCATE" }, \
	36	{ BMAPI_IGNSTATE, "IGNSTATE" }, \
	37	{ BMAPI_DIRECT, "DIRECT" }, \
0b1b213f	38	{ BMAPI_TRYLOCK, "TRYLOCK" }
1da177e4	39
1da177e4 LT	40	struct xfs_inode;
	41	struct xfs_bmbt_irec;
	42
541d7d3c	43	extern int xfs_iomap(struct xfs_inode *, xfs_off_t, ssize_t, int,
207d0416	44	struct xfs_bmbt_irec , int , int *);
f403b7f4	45	extern int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, size_t);
1da177e4 LT	46
1da177e4 LT	47	#endif /* __XFS_IOMAP_H__*/