diff options
author | Mark Fasheh <mark.fasheh@oracle.com> | 2005-12-15 14:31:24 -0800 |
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committer | Joel Becker <joel.becker@oracle.com> | 2006-01-03 11:45:47 -0800 |
commit | ccd979bdbce9fba8412beb3f1de68a9d0171b12c (patch) | |
tree | c50ed941849ce06ccadd4ce27599b3ef9fdbe2ae /fs/ocfs2/extent_map.h | |
parent | 8df08c89c668e1bd922a053fdb5ba1fadbecbb38 (diff) |
[PATCH] OCFS2: The Second Oracle Cluster Filesystem
The OCFS2 file system module.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Diffstat (limited to 'fs/ocfs2/extent_map.h')
-rw-r--r-- | fs/ocfs2/extent_map.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/fs/ocfs2/extent_map.h b/fs/ocfs2/extent_map.h new file mode 100644 index 00000000000..fa3745efa88 --- /dev/null +++ b/fs/ocfs2/extent_map.h @@ -0,0 +1,46 @@ +/* -*- mode: c; c-basic-offset: 8; -*- + * vim: noexpandtab sw=8 ts=8 sts=0: + * + * extent_map.h + * + * In-memory file extent mappings for OCFS2. + * + * Copyright (C) 2004 Oracle. 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, version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will 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 to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#ifndef _EXTENT_MAP_H +#define _EXTENT_MAP_H + +int init_ocfs2_extent_maps(void); +void exit_ocfs2_extent_maps(void); + +/* + * EVERY CALL here except _init, _trunc, and _drop expects alloc_sem + * to be held. The allocation cannot change at all while the map is + * in the process of being updated. + */ +int ocfs2_extent_map_init(struct inode *inode); +int ocfs2_extent_map_append(struct inode *inode, + struct ocfs2_extent_rec *rec, + u32 new_clusters); +int ocfs2_extent_map_get_blocks(struct inode *inode, + u64 v_blkno, int count, + u64 *p_blkno, int *ret_count); +int ocfs2_extent_map_drop(struct inode *inode, u32 new_clusters); +int ocfs2_extent_map_trunc(struct inode *inode, u32 new_clusters); + +#endif /* _EXTENT_MAP_H */ |