ia64/linux-2.6.18-xen.hg

view fs/ocfs2/extent_map.h @ 524:7f8b544237bf

netfront: Allow netfront in domain 0.

This is useful if your physical network device is in a utility domain.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue Apr 15 15:18:58 2008 +0100 (2008-04-15)
parents 831230e53067
children
line source
1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * extent_map.h
5 *
6 * In-memory file extent mappings for OCFS2.
7 *
8 * Copyright (C) 2004 Oracle. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License, version 2, as published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public
20 * License along with this program; if not, write to the
21 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 * Boston, MA 021110-1307, USA.
23 */
25 #ifndef _EXTENT_MAP_H
26 #define _EXTENT_MAP_H
28 int init_ocfs2_extent_maps(void);
29 void exit_ocfs2_extent_maps(void);
31 /*
32 * EVERY CALL here except _init, _trunc, and _drop expects alloc_sem
33 * to be held. The allocation cannot change at all while the map is
34 * in the process of being updated.
35 */
36 int ocfs2_extent_map_init(struct inode *inode);
37 int ocfs2_extent_map_append(struct inode *inode,
38 struct ocfs2_extent_rec *rec,
39 u32 new_clusters);
40 int ocfs2_extent_map_get_blocks(struct inode *inode,
41 u64 v_blkno, int count,
42 u64 *p_blkno, int *ret_count);
43 int ocfs2_extent_map_drop(struct inode *inode, u32 new_clusters);
44 int ocfs2_extent_map_trunc(struct inode *inode, u32 new_clusters);
46 #endif /* _EXTENT_MAP_H */