1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* inode.h
*
* Function prototypes
*
* Copyright (C) 2002, 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 as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* 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 OCFS2_INODE_H
#define OCFS2_INODE_H
#include "extent_map.h"
/* OCFS2 Inode Private Data */
struct ocfs2_inode_info
{
u64 ip_blkno;
struct ocfs2_lock_res ip_rw_lockres;
struct ocfs2_lock_res ip_inode_lockres;
struct ocfs2_lock_res ip_open_lockres;
/* protects allocation changes on this inode. */
struct rw_semaphore ip_alloc_sem;
/* protects extended attribute changes on this inode */
struct rw_semaphore ip_xattr_sem;
/* These fields are protected by ip_lock */
spinlock_t ip_lock;
u32 ip_open_count;
u32 ip_clusters;
struct list_head ip_io_markers;
struct mutex ip_io_mutex;
u32 ip_flags; /* see below */
u32 ip_attr; /* inode attributes */
u16 ip_dyn_features;
/* protected by recovery_lock. */
struct inode *ip_next_orphan;
u32 ip_dir_start_lookup;
struct ocfs2_caching_info ip_metadata_cache;
struct ocfs2_extent_map ip_extent_map;
struct inode vfs_inode;
struct jbd2_inode ip_jinode;
/* Only valid if the inode is the dir. */
u32 ip_last_used_slot;
u64 ip_last_used_group;
struct ocfs2_alloc_reservation ip_la_data_resv;
};
/*
* Flags for the ip_flags field
*/
/* System file inodes */
#define OCFS2_INODE_SYSTEM_FILE 0x00000001
#define OCFS2_INODE_JOURNAL 0x00000002
#define OCFS2_INODE_BITMAP 0x00000004
/* This inode has been wiped from disk */
#define OCFS2_INODE_DELETED 0x00000008
/* Another node is deleting, so our delete is a nop */
#define OCFS2_INODE_SKIP_DELETE 0x00000010
/* Has the inode been orphaned on another node?
*
* This hints to ocfs2_drop_inode that it should clear i_nlink before
* continuing.
*
* We *only* set this on unlink vote from another node. If the inode
* was locally orphaned, then we're sure of the state and don't need
* to twiddle i_nlink later - it's either zero or not depending on
* whether our unlink succeeded. Otherwise we got this from a node
* whose intention was to orphan the inode, however he may have
* crashed, failed etc, so we let ocfs2_drop_inode zero the value and
* rely on ocfs2_delete_inode to sort things out under the proper
* cluster locks.
*/
#define OCFS2_INODE_MAYBE_ORPHANED 0x00000020
/* Does someone have the file open O_DIRECT */
#define OCFS2_INODE_OPEN_DIRECT 0x00000040
/* Tell the inode wipe code it's not in orphan dir */
#define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000080
static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode)
{
return container_of(inode, struct ocfs2_inode_info, vfs_inode);
}
#define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL)
#define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL)
extern struct kmem_cache *ocfs2_inode_cache;
extern const struct address_space_operations ocfs2_aops;
extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops;
static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode)
{
return &OCFS2_I(inode)->ip_metadata_cache;
}
void ocfs2_evict_inode(struct inode *inode);
void ocfs2_drop_inode(struct inode *inode);
/* Flags for ocfs2_iget() */
#define OCFS2_FI_FLAG_SYSFILE 0x1
#define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2
struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff);
struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags,
int sysfile_type);
int ocfs2_inode_init_private(struct inode *inode);
int ocfs2_inode_revalidate(struct dentry *dentry);
void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
int create_ino);
void ocfs2_read_inode(struct inode *inode);
void ocfs2_read_inode2(struct inode *inode, void *opaque);
ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf,
size_t size, loff_t *offp);
void ocfs2_sync_blockdev(struct super_block *sb);
void ocfs2_refresh_inode(struct inode *inode,
struct ocfs2_dinode *fe);
int ocfs2_mark_inode_dirty(handle_t *handle,
struct inode *inode,
struct buffer_head *bh);
int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb);
int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb);
struct buffer_head *ocfs2_bread(struct inode *inode,
int block, int *err, int reada);
void ocfs2_set_inode_flags(struct inode *inode);
void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi);
static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode)
{
int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9;
return (blkcnt_t)(OCFS2_I(inode)->ip_clusters << c_to_s_bits);
}
/* Validate that a bh contains a valid inode */
int ocfs2_validate_inode_block(struct super_block *sb,
struct buffer_head *bh);
/*
* Read an inode block into *bh. If *bh is NULL, a bh will be allocated.
* This is a cached read. The inode will be validated with
* ocfs2_validate_inode_block().
*/
int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh);
/* The same, but can be passed OCFS2_BH_* flags */
int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh,
int flags);
static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_info *ci)
{
return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache);
}
#endif /* OCFS2_INODE_H */
|
