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| author | Tao Ma <tao.ma@oracle.com> | 2009-08-18 05:19:58 +0200 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2009-09-23 05:09:28 +0200 |
| commit | 8dec98edfe9684ce00b580a09dde3dcd21ee785b (patch) | |
| tree | 3002e990974163a09ea6d427d7cf775aaca7acca /fs/ocfs2/refcounttree.h | |
| parent | ocfs2: Abstract caching info checkpoint. (diff) | |
| download | linux-8dec98edfe9684ce00b580a09dde3dcd21ee785b.tar.xz linux-8dec98edfe9684ce00b580a09dde3dcd21ee785b.zip | |
ocfs2: Add new refcount tree lock resource in dlmglue.
refcount tree lock resource is used to protect refcount
tree read/write among multiple nodes.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Diffstat (limited to 'fs/ocfs2/refcounttree.h')
| -rw-r--r-- | fs/ocfs2/refcounttree.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/fs/ocfs2/refcounttree.h b/fs/ocfs2/refcounttree.h new file mode 100644 index 000000000000..9a3695cdbb53 --- /dev/null +++ b/fs/ocfs2/refcounttree.h @@ -0,0 +1,36 @@ +/* -*- mode: c; c-basic-offset: 8; -*- + * vim: noexpandtab sw=8 ts=8 sts=0: + * + * refcounttree.h + * + * Copyright (C) 2009 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. + */ +#ifndef OCFS2_REFCOUNTTREE_H +#define OCFS2_REFCOUNTTREE_H + +struct ocfs2_refcount_tree { + struct rb_node rf_node; + u64 rf_blkno; + u32 rf_generation; + struct rw_semaphore rf_sem; + struct ocfs2_lock_res rf_lockres; + struct kref rf_getcnt; + int rf_removed; + + /* the following 4 fields are used by caching_info. */ + struct ocfs2_caching_info rf_ci; + spinlock_t rf_lock; + struct mutex rf_io_mutex; + struct super_block *rf_sb; +}; + +#endif /* OCFS2_REFCOUNTTREE_H */ |