]>
Commit | Line | Data |
---|---|---|
8dec98ed TM |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * refcounttree.h | |
5 | * | |
6 | * Copyright (C) 2009 Oracle. All rights reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public | |
10 | * License version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | */ | |
17 | #ifndef OCFS2_REFCOUNTTREE_H | |
18 | #define OCFS2_REFCOUNTTREE_H | |
19 | ||
20 | struct ocfs2_refcount_tree { | |
21 | struct rb_node rf_node; | |
22 | u64 rf_blkno; | |
23 | u32 rf_generation; | |
24 | struct rw_semaphore rf_sem; | |
25 | struct ocfs2_lock_res rf_lockres; | |
26 | struct kref rf_getcnt; | |
27 | int rf_removed; | |
28 | ||
29 | /* the following 4 fields are used by caching_info. */ | |
30 | struct ocfs2_caching_info rf_ci; | |
31 | spinlock_t rf_lock; | |
32 | struct mutex rf_io_mutex; | |
33 | struct super_block *rf_sb; | |
34 | }; | |
35 | ||
374a263e TM |
36 | void ocfs2_purge_refcount_trees(struct ocfs2_super *osb); |
37 | int ocfs2_lock_refcount_tree(struct ocfs2_super *osb, u64 ref_blkno, int rw, | |
38 | struct ocfs2_refcount_tree **tree, | |
39 | struct buffer_head **ref_bh); | |
40 | void ocfs2_unlock_refcount_tree(struct ocfs2_super *osb, | |
41 | struct ocfs2_refcount_tree *tree, | |
42 | int rw); | |
8dec98ed | 43 | #endif /* OCFS2_REFCOUNTTREE_H */ |