ia64/linux-2.6.18-xen.hg

view fs/afs/vnode.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 /* vnode.h: AFS vnode record
2 *
3 * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
12 #ifndef _LINUX_AFS_VNODE_H
13 #define _LINUX_AFS_VNODE_H
15 #include <linux/fs.h>
16 #include "server.h"
17 #include "kafstimod.h"
18 #include "cache.h"
20 #ifdef __KERNEL__
22 struct afs_rxfs_fetch_descriptor;
24 /*****************************************************************************/
25 /*
26 * vnode catalogue entry
27 */
28 struct afs_cache_vnode
29 {
30 afs_vnodeid_t vnode_id; /* vnode ID */
31 unsigned vnode_unique; /* vnode ID uniquifier */
32 afs_dataversion_t data_version; /* data version */
33 };
35 #ifdef AFS_CACHING_SUPPORT
36 extern struct cachefs_index_def afs_vnode_cache_index_def;
37 #endif
39 /*****************************************************************************/
40 /*
41 * AFS inode private data
42 */
43 struct afs_vnode
44 {
45 struct inode vfs_inode; /* the VFS's inode record */
47 struct afs_volume *volume; /* volume on which vnode resides */
48 struct afs_fid fid; /* the file identifier for this inode */
49 struct afs_file_status status; /* AFS status info for this file */
50 #ifdef AFS_CACHING_SUPPORT
51 struct cachefs_cookie *cache; /* caching cookie */
52 #endif
54 wait_queue_head_t update_waitq; /* status fetch waitqueue */
55 unsigned update_cnt; /* number of outstanding ops that will update the
56 * status */
57 spinlock_t lock; /* waitqueue/flags lock */
58 unsigned flags;
59 #define AFS_VNODE_CHANGED 0x00000001 /* set if vnode reported changed by callback */
60 #define AFS_VNODE_DELETED 0x00000002 /* set if vnode deleted on server */
61 #define AFS_VNODE_MOUNTPOINT 0x00000004 /* set if vnode is a mountpoint symlink */
63 /* outstanding callback notification on this file */
64 struct afs_server *cb_server; /* server that made the current promise */
65 struct list_head cb_link; /* link in server's promises list */
66 struct list_head cb_hash_link; /* link in master callback hash */
67 struct afs_timer cb_timeout; /* timeout on promise */
68 unsigned cb_version; /* callback version */
69 unsigned cb_expiry; /* callback expiry time */
70 afs_callback_type_t cb_type; /* type of callback */
71 };
73 static inline struct afs_vnode *AFS_FS_I(struct inode *inode)
74 {
75 return container_of(inode,struct afs_vnode,vfs_inode);
76 }
78 static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode)
79 {
80 return &vnode->vfs_inode;
81 }
83 extern int afs_vnode_fetch_status(struct afs_vnode *vnode);
85 extern int afs_vnode_fetch_data(struct afs_vnode *vnode,
86 struct afs_rxfs_fetch_descriptor *desc);
88 extern int afs_vnode_give_up_callback(struct afs_vnode *vnode);
90 extern struct afs_timer_ops afs_vnode_cb_timed_out_ops;
92 #endif /* __KERNEL__ */
94 #endif /* _LINUX_AFS_VNODE_H */