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1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * inode.h | |
5 | * | |
6 | * Function prototypes | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #ifndef OCFS2_INODE_H | |
27 | #define OCFS2_INODE_H | |
28 | ||
29 | /* OCFS2 Inode Private Data */ | |
30 | struct ocfs2_inode_info | |
31 | { | |
32 | u64 ip_blkno; | |
33 | ||
34 | struct ocfs2_lock_res ip_rw_lockres; | |
35 | struct ocfs2_lock_res ip_meta_lockres; | |
36 | struct ocfs2_lock_res ip_data_lockres; | |
37 | ||
38 | /* protects allocation changes on this inode. */ | |
39 | struct rw_semaphore ip_alloc_sem; | |
40 | ||
41 | /* These fields are protected by ip_lock */ | |
42 | spinlock_t ip_lock; | |
43 | u32 ip_open_count; | |
44 | u32 ip_clusters; | |
45 | struct ocfs2_extent_map ip_map; | |
46 | struct list_head ip_io_markers; | |
47 | int ip_orphaned_slot; | |
48 | ||
49 | struct semaphore ip_io_sem; | |
50 | ||
51 | /* Used by the journalling code to attach an inode to a | |
52 | * handle. These are protected by ip_io_sem in order to lock | |
53 | * out other I/O to the inode until we either commit or | |
54 | * abort. */ | |
55 | struct list_head ip_handle_list; | |
56 | struct ocfs2_journal_handle *ip_handle; | |
57 | ||
58 | u32 ip_flags; /* see below */ | |
59 | ||
60 | /* protected by recovery_lock. */ | |
61 | struct inode *ip_next_orphan; | |
62 | ||
63 | u32 ip_dir_start_lookup; | |
64 | ||
65 | /* next two are protected by trans_inc_lock */ | |
66 | /* which transaction were we created on? Zero if none. */ | |
67 | unsigned long ip_created_trans; | |
68 | /* last transaction we were a part of. */ | |
69 | unsigned long ip_last_trans; | |
70 | ||
71 | struct ocfs2_caching_info ip_metadata_cache; | |
72 | ||
73 | struct inode vfs_inode; | |
74 | }; | |
75 | ||
76 | /* | |
77 | * Flags for the ip_flags field | |
78 | */ | |
79 | /* System file inodes */ | |
80 | #define OCFS2_INODE_SYSTEM_FILE 0x00000001 | |
81 | #define OCFS2_INODE_JOURNAL 0x00000002 | |
82 | #define OCFS2_INODE_BITMAP 0x00000004 | |
83 | /* This inode has been wiped from disk */ | |
84 | #define OCFS2_INODE_DELETED 0x00000008 | |
85 | /* Another node is deleting, so our delete is a nop */ | |
86 | #define OCFS2_INODE_SKIP_DELETE 0x00000010 | |
87 | /* Has the inode been orphaned on another node? | |
88 | * | |
89 | * This hints to ocfs2_drop_inode that it should clear i_nlink before | |
90 | * continuing. | |
91 | * | |
92 | * We *only* set this on unlink vote from another node. If the inode | |
93 | * was locally orphaned, then we're sure of the state and don't need | |
94 | * to twiddle i_nlink later - it's either zero or not depending on | |
95 | * whether our unlink succeeded. Otherwise we got this from a node | |
96 | * whose intention was to orphan the inode, however he may have | |
97 | * crashed, failed etc, so we let ocfs2_drop_inode zero the value and | |
98 | * rely on ocfs2_delete_inode to sort things out under the proper | |
99 | * cluster locks. | |
100 | */ | |
101 | #define OCFS2_INODE_MAYBE_ORPHANED 0x00000020 | |
102 | /* Does someone have the file open O_DIRECT */ | |
103 | #define OCFS2_INODE_OPEN_DIRECT 0x00000040 | |
104 | /* Indicates that the metadata cache should be used as an array. */ | |
105 | #define OCFS2_INODE_CACHE_INLINE 0x00000080 | |
106 | ||
107 | static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode) | |
108 | { | |
109 | return container_of(inode, struct ocfs2_inode_info, vfs_inode); | |
110 | } | |
111 | ||
112 | #define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL) | |
113 | #define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL) | |
114 | ||
115 | extern kmem_cache_t *ocfs2_inode_cache; | |
116 | ||
117 | extern struct address_space_operations ocfs2_aops; | |
118 | ||
119 | struct buffer_head *ocfs2_bread(struct inode *inode, int block, | |
120 | int *err, int reada); | |
121 | void ocfs2_clear_inode(struct inode *inode); | |
122 | void ocfs2_delete_inode(struct inode *inode); | |
123 | void ocfs2_drop_inode(struct inode *inode); | |
124 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff); | |
125 | struct inode *ocfs2_ilookup_for_vote(struct ocfs2_super *osb, | |
126 | u64 blkno, | |
127 | int delete_vote); | |
128 | int ocfs2_inode_init_private(struct inode *inode); | |
129 | int ocfs2_inode_revalidate(struct dentry *dentry); | |
130 | int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, | |
131 | int create_ino); | |
132 | void ocfs2_read_inode(struct inode *inode); | |
133 | void ocfs2_read_inode2(struct inode *inode, void *opaque); | |
134 | ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf, | |
135 | size_t size, loff_t *offp); | |
136 | void ocfs2_sync_blockdev(struct super_block *sb); | |
137 | void ocfs2_refresh_inode(struct inode *inode, | |
138 | struct ocfs2_dinode *fe); | |
139 | int ocfs2_mark_inode_dirty(struct ocfs2_journal_handle *handle, | |
140 | struct inode *inode, | |
141 | struct buffer_head *bh); | |
142 | int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb); | |
143 | int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb); | |
144 | ||
145 | #endif /* OCFS2_INODE_H */ |