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11
12struct super_block;
13struct file_system_type;
14struct iomap;
15struct iomap_ops;
16struct linux_binprm;
17struct path;
18struct mount;
19struct shrink_control;
20
21
22
23
24#ifdef CONFIG_BLOCK
25extern void __init bdev_cache_init(void);
26
27extern int __sync_blockdev(struct block_device *bdev, int wait);
28
29#else
30static inline void bdev_cache_init(void)
31{
32}
33
34static inline int __sync_blockdev(struct block_device *bdev, int wait)
35{
36 return 0;
37}
38#endif
39
40
41
42
43extern void guard_bio_eod(int rw, struct bio *bio);
44extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
45 get_block_t *get_block, struct iomap *iomap);
46
47
48
49
50extern void __init chrdev_init(void);
51
52
53
54
55extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
56extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
57 const char *, unsigned int, struct path *);
58
59
60
61
62extern void *copy_mount_options(const void __user *);
63extern char *copy_mount_string(const void __user *);
64
65extern struct vfsmount *lookup_mnt(struct path *);
66extern int finish_automount(struct vfsmount *, struct path *);
67
68extern int sb_prepare_remount_readonly(struct super_block *);
69
70extern void __init mnt_init(void);
71
72extern int __mnt_want_write(struct vfsmount *);
73extern int __mnt_want_write_file(struct file *);
74extern void __mnt_drop_write(struct vfsmount *);
75extern void __mnt_drop_write_file(struct file *);
76
77
78
79
80extern void chroot_fs_refs(const struct path *, const struct path *);
81
82
83
84
85extern struct file *get_empty_filp(void);
86
87
88
89
90extern int do_remount_sb(struct super_block *, int, void *, int);
91extern bool trylock_super(struct super_block *sb);
92extern struct dentry *mount_fs(struct file_system_type *,
93 int, const char *, void *);
94extern struct super_block *user_get_super(dev_t);
95
96
97
98
99struct open_flags {
100 int open_flag;
101 umode_t mode;
102 int acc_mode;
103 int intent;
104 int lookup_flags;
105};
106extern struct file *do_filp_open(int dfd, struct filename *pathname,
107 const struct open_flags *op);
108extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
109 const char *, const struct open_flags *);
110
111extern long do_handle_open(int mountdirfd,
112 struct file_handle __user *ufh, int open_flag);
113extern int open_check_o_direct(struct file *f);
114extern int vfs_open(const struct path *, struct file *, const struct cred *);
115extern struct file *filp_clone_open(struct file *);
116
117
118
119
120extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
121extern void inode_add_lru(struct inode *inode);
122extern int dentry_needs_remove_privs(struct dentry *dentry);
123
124extern bool __atime_needs_update(const struct path *, struct inode *, bool);
125static inline bool atime_needs_update_rcu(const struct path *path,
126 struct inode *inode)
127{
128 return __atime_needs_update(path, inode, true);
129}
130
131extern bool atime_needs_update_rcu(const struct path *, struct inode *);
132
133
134
135
136extern void inode_io_list_del(struct inode *inode);
137
138extern long get_nr_dirty_inodes(void);
139extern void evict_inodes(struct super_block *);
140extern int invalidate_inodes(struct super_block *, bool);
141
142
143
144
145extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
146extern int d_set_mounted(struct dentry *dentry);
147extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
148extern struct dentry *d_alloc_cursor(struct dentry *);
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151
152
153extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
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156
157
158extern const struct file_operations pipefifo_fops;
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161
162
163extern void group_pin_kill(struct hlist_head *p);
164extern void mnt_pin_kill(struct mount *m);
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166
167
168
169extern const struct dentry_operations ns_dentry_operations;
170
171
172
173
174extern int do_vfs_ioctl(struct file *file, unsigned int fd, unsigned int cmd,
175 unsigned long arg);
176extern long vfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
177
178
179
180
181typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len,
182 void *data, struct iomap *iomap);
183
184loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length,
185 unsigned flags, struct iomap_ops *ops, void *data,
186 iomap_actor_t actor);
187