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ccd979bd MF |
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 | ||
83418978 MF |
29 | #include "extent_map.h" |
30 | ||
ccd979bd MF |
31 | /* OCFS2 Inode Private Data */ |
32 | struct ocfs2_inode_info | |
33 | { | |
34 | u64 ip_blkno; | |
35 | ||
36 | struct ocfs2_lock_res ip_rw_lockres; | |
e63aecb6 | 37 | struct ocfs2_lock_res ip_inode_lockres; |
50008630 | 38 | struct ocfs2_lock_res ip_open_lockres; |
ccd979bd MF |
39 | |
40 | /* protects allocation changes on this inode. */ | |
41 | struct rw_semaphore ip_alloc_sem; | |
42 | ||
cf1d6c76 TY |
43 | /* protects extended attribute changes on this inode */ |
44 | struct rw_semaphore ip_xattr_sem; | |
45 | ||
ccd979bd MF |
46 | /* These fields are protected by ip_lock */ |
47 | spinlock_t ip_lock; | |
48 | u32 ip_open_count; | |
49 | u32 ip_clusters; | |
ccd979bd | 50 | struct list_head ip_io_markers; |
ccd979bd | 51 | |
251b6ecc | 52 | struct mutex ip_io_mutex; |
ccd979bd | 53 | |
ccd979bd | 54 | u32 ip_flags; /* see below */ |
ca4d147e | 55 | u32 ip_attr; /* inode attributes */ |
15b1e36b | 56 | u16 ip_dyn_features; |
ccd979bd MF |
57 | |
58 | /* protected by recovery_lock. */ | |
59 | struct inode *ip_next_orphan; | |
60 | ||
61 | u32 ip_dir_start_lookup; | |
62 | ||
63 | /* next two are protected by trans_inc_lock */ | |
64 | /* which transaction were we created on? Zero if none. */ | |
65 | unsigned long ip_created_trans; | |
66 | /* last transaction we were a part of. */ | |
67 | unsigned long ip_last_trans; | |
68 | ||
69 | struct ocfs2_caching_info ip_metadata_cache; | |
70 | ||
83418978 MF |
71 | struct ocfs2_extent_map ip_extent_map; |
72 | ||
ccd979bd | 73 | struct inode vfs_inode; |
2b4e30fb | 74 | struct jbd2_inode ip_jinode; |
ccd979bd MF |
75 | }; |
76 | ||
77 | /* | |
78 | * Flags for the ip_flags field | |
79 | */ | |
80 | /* System file inodes */ | |
81 | #define OCFS2_INODE_SYSTEM_FILE 0x00000001 | |
82 | #define OCFS2_INODE_JOURNAL 0x00000002 | |
83 | #define OCFS2_INODE_BITMAP 0x00000004 | |
84 | /* This inode has been wiped from disk */ | |
85 | #define OCFS2_INODE_DELETED 0x00000008 | |
86 | /* Another node is deleting, so our delete is a nop */ | |
87 | #define OCFS2_INODE_SKIP_DELETE 0x00000010 | |
88 | /* Has the inode been orphaned on another node? | |
89 | * | |
90 | * This hints to ocfs2_drop_inode that it should clear i_nlink before | |
91 | * continuing. | |
92 | * | |
93 | * We *only* set this on unlink vote from another node. If the inode | |
94 | * was locally orphaned, then we're sure of the state and don't need | |
95 | * to twiddle i_nlink later - it's either zero or not depending on | |
96 | * whether our unlink succeeded. Otherwise we got this from a node | |
97 | * whose intention was to orphan the inode, however he may have | |
98 | * crashed, failed etc, so we let ocfs2_drop_inode zero the value and | |
99 | * rely on ocfs2_delete_inode to sort things out under the proper | |
100 | * cluster locks. | |
101 | */ | |
102 | #define OCFS2_INODE_MAYBE_ORPHANED 0x00000020 | |
103 | /* Does someone have the file open O_DIRECT */ | |
104 | #define OCFS2_INODE_OPEN_DIRECT 0x00000040 | |
105 | /* Indicates that the metadata cache should be used as an array. */ | |
106 | #define OCFS2_INODE_CACHE_INLINE 0x00000080 | |
107 | ||
108 | static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode) | |
109 | { | |
110 | return container_of(inode, struct ocfs2_inode_info, vfs_inode); | |
111 | } | |
112 | ||
113 | #define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL) | |
114 | #define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL) | |
115 | ||
e18b890b | 116 | extern struct kmem_cache *ocfs2_inode_cache; |
ccd979bd | 117 | |
f5e54d6e | 118 | extern const struct address_space_operations ocfs2_aops; |
ccd979bd | 119 | |
ccd979bd MF |
120 | void ocfs2_clear_inode(struct inode *inode); |
121 | void ocfs2_delete_inode(struct inode *inode); | |
122 | void ocfs2_drop_inode(struct inode *inode); | |
24c19ef4 MF |
123 | |
124 | /* Flags for ocfs2_iget() */ | |
5fa0613e JK |
125 | #define OCFS2_FI_FLAG_SYSFILE 0x1 |
126 | #define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2 | |
127 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags, | |
128 | int sysfile_type); | |
ccd979bd MF |
129 | int ocfs2_inode_init_private(struct inode *inode); |
130 | int ocfs2_inode_revalidate(struct dentry *dentry); | |
131 | int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, | |
132 | int create_ino); | |
133 | void ocfs2_read_inode(struct inode *inode); | |
134 | void ocfs2_read_inode2(struct inode *inode, void *opaque); | |
135 | ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf, | |
136 | size_t size, loff_t *offp); | |
137 | void ocfs2_sync_blockdev(struct super_block *sb); | |
138 | void ocfs2_refresh_inode(struct inode *inode, | |
139 | struct ocfs2_dinode *fe); | |
1fabe148 | 140 | int ocfs2_mark_inode_dirty(handle_t *handle, |
ccd979bd MF |
141 | struct inode *inode, |
142 | struct buffer_head *bh); | |
143 | int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb); | |
144 | int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb); | |
145 | ||
ca4d147e | 146 | void ocfs2_set_inode_flags(struct inode *inode); |
6e4b0d56 | 147 | void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi); |
ca4d147e | 148 | |
8110b073 MF |
149 | static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode) |
150 | { | |
151 | int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9; | |
152 | ||
153 | return (blkcnt_t)(OCFS2_I(inode)->ip_clusters << c_to_s_bits); | |
154 | } | |
155 | ||
ccd979bd | 156 | #endif /* OCFS2_INODE_H */ |