]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - fs/ocfs2/extent_map.h
1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * In-memory file extent mappings for OCFS2.
8 * Copyright (C) 2004 Oracle. All rights reserved.
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.
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.
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.
28 int init_ocfs2_extent_maps(void);
29 void exit_ocfs2_extent_maps(void);
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.
36 int ocfs2_extent_map_init(struct inode
*inode
);
37 int ocfs2_extent_map_append(struct inode
*inode
,
38 struct ocfs2_extent_rec
*rec
,
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 */