1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * inode.h |
4 | * |
5 | * Function prototypes |
6 | * |
7 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. |
8 | */ |
9 | |
10 | #ifndef OCFS2_INODE_H |
11 | #define OCFS2_INODE_H |
12 | |
13 | #include "extent_map.h" |
14 | |
15 | /* OCFS2 Inode Private Data */ |
16 | struct ocfs2_inode_info |
17 | { |
18 | u64 ip_blkno; |
19 | |
20 | struct ocfs2_lock_res ip_rw_lockres; |
21 | struct ocfs2_lock_res ip_inode_lockres; |
22 | struct ocfs2_lock_res ip_open_lockres; |
23 | |
24 | /* protects allocation changes on this inode. */ |
25 | struct rw_semaphore ip_alloc_sem; |
26 | |
27 | /* protects extended attribute changes on this inode */ |
28 | struct rw_semaphore ip_xattr_sem; |
29 | |
30 | /* These fields are protected by ip_lock */ |
31 | spinlock_t ip_lock; |
32 | u32 ip_open_count; |
33 | struct list_head ip_io_markers; |
34 | u32 ip_clusters; |
35 | |
36 | u16 ip_dyn_features; |
37 | struct mutex ip_io_mutex; |
38 | u32 ip_flags; /* see below */ |
39 | u32 ip_attr; /* inode attributes */ |
40 | |
41 | /* Record unwritten extents during direct io. */ |
42 | struct list_head ip_unwritten_list; |
43 | |
44 | /* protected by recovery_lock. */ |
45 | struct inode *ip_next_orphan; |
46 | |
47 | struct ocfs2_caching_info ip_metadata_cache; |
48 | struct ocfs2_extent_map ip_extent_map; |
49 | struct inode vfs_inode; |
50 | struct jbd2_inode ip_jinode; |
51 | |
52 | u32 ip_dir_start_lookup; |
53 | |
54 | /* Only valid if the inode is the dir. */ |
55 | u32 ip_last_used_slot; |
56 | u64 ip_last_used_group; |
57 | u32 ip_dir_lock_gen; |
58 | |
59 | struct ocfs2_alloc_reservation ip_la_data_resv; |
60 | |
61 | /* |
62 | * Transactions that contain inode's metadata needed to complete |
63 | * fsync and fdatasync, respectively. |
64 | */ |
65 | tid_t i_sync_tid; |
66 | tid_t i_datasync_tid; |
67 | |
68 | struct dquot __rcu *i_dquot[MAXQUOTAS]; |
69 | }; |
70 | |
71 | /* |
72 | * Flags for the ip_flags field |
73 | */ |
74 | /* System file inodes */ |
75 | #define OCFS2_INODE_SYSTEM_FILE 0x00000001 |
76 | #define OCFS2_INODE_JOURNAL 0x00000002 |
77 | #define OCFS2_INODE_BITMAP 0x00000004 |
78 | /* This inode has been wiped from disk */ |
79 | #define OCFS2_INODE_DELETED 0x00000008 |
80 | /* Has the inode been orphaned on another node? |
81 | * |
82 | * This hints to ocfs2_drop_inode that it should clear i_nlink before |
83 | * continuing. |
84 | * |
85 | * We *only* set this on unlink vote from another node. If the inode |
86 | * was locally orphaned, then we're sure of the state and don't need |
87 | * to twiddle i_nlink later - it's either zero or not depending on |
88 | * whether our unlink succeeded. Otherwise we got this from a node |
89 | * whose intention was to orphan the inode, however he may have |
90 | * crashed, failed etc, so we let ocfs2_drop_inode zero the value and |
91 | * rely on ocfs2_delete_inode to sort things out under the proper |
92 | * cluster locks. |
93 | */ |
94 | #define OCFS2_INODE_MAYBE_ORPHANED 0x00000010 |
95 | /* Does someone have the file open O_DIRECT */ |
96 | #define OCFS2_INODE_OPEN_DIRECT 0x00000020 |
97 | /* Tell the inode wipe code it's not in orphan dir */ |
98 | #define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000040 |
99 | /* Entry in orphan dir with 'dio-' prefix */ |
100 | #define OCFS2_INODE_DIO_ORPHAN_ENTRY 0x00000080 |
101 | |
102 | static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode) |
103 | { |
104 | return container_of(inode, struct ocfs2_inode_info, vfs_inode); |
105 | } |
106 | |
107 | #define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL) |
108 | #define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL) |
109 | |
110 | extern const struct address_space_operations ocfs2_aops; |
111 | extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops; |
112 | |
113 | static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode) |
114 | { |
115 | return &OCFS2_I(inode)->ip_metadata_cache; |
116 | } |
117 | |
118 | void ocfs2_evict_inode(struct inode *inode); |
119 | int ocfs2_drop_inode(struct inode *inode); |
120 | |
121 | /* Flags for ocfs2_iget() */ |
122 | #define OCFS2_FI_FLAG_SYSFILE 0x1 |
123 | #define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2 |
124 | #define OCFS2_FI_FLAG_FILECHECK_CHK 0x4 |
125 | #define OCFS2_FI_FLAG_FILECHECK_FIX 0x8 |
126 | |
127 | struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff); |
128 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags, |
129 | int sysfile_type); |
130 | int ocfs2_inode_revalidate(struct dentry *dentry); |
131 | void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
132 | int create_ino); |
133 | void ocfs2_sync_blockdev(struct super_block *sb); |
134 | void ocfs2_refresh_inode(struct inode *inode, |
135 | struct ocfs2_dinode *fe); |
136 | int ocfs2_mark_inode_dirty(handle_t *handle, |
137 | struct inode *inode, |
138 | struct buffer_head *bh); |
139 | |
140 | void ocfs2_set_inode_flags(struct inode *inode); |
141 | void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi); |
142 | |
143 | static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode) |
144 | { |
145 | int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9; |
146 | |
147 | return (blkcnt_t)OCFS2_I(inode)->ip_clusters << c_to_s_bits; |
148 | } |
149 | |
150 | /* Validate that a bh contains a valid inode */ |
151 | int ocfs2_validate_inode_block(struct super_block *sb, |
152 | struct buffer_head *bh); |
153 | /* |
154 | * Read an inode block into *bh. If *bh is NULL, a bh will be allocated. |
155 | * This is a cached read. The inode will be validated with |
156 | * ocfs2_validate_inode_block(). |
157 | */ |
158 | int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh); |
159 | /* The same, but can be passed OCFS2_BH_* flags */ |
160 | int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, |
161 | int flags); |
162 | |
163 | static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_info *ci) |
164 | { |
165 | return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache); |
166 | } |
167 | |
168 | /* Does this inode have the reflink flag set? */ |
169 | static inline bool ocfs2_is_refcount_inode(struct inode *inode) |
170 | { |
171 | return (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL); |
172 | } |
173 | |
174 | #endif /* OCFS2_INODE_H */ |
175 | |