1 /* fs/ internal definitions
3 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <linux/lglock.h>
15 struct file_system_type;
24 extern void __init bdev_cache_init(void);
26 extern int __sync_blockdev(struct block_device *bdev, int wait);
29 static inline void bdev_cache_init(void)
33 static inline int __sync_blockdev(struct block_device *bdev, int wait)
42 extern void __init chrdev_init(void);
47 extern int __inode_permission(struct inode *, int);
52 extern int copy_mount_options(const void __user *, unsigned long *);
53 extern int copy_mount_string(const void __user *, char **);
55 extern struct vfsmount *lookup_mnt(struct path *);
56 extern int finish_automount(struct vfsmount *, struct path *);
58 extern int sb_prepare_remount_readonly(struct super_block *);
60 extern void __init mnt_init(void);
62 extern struct lglock vfsmount_lock;
64 extern int __mnt_want_write(struct vfsmount *);
65 extern int __mnt_want_write_file(struct file *);
66 extern void __mnt_drop_write(struct vfsmount *);
67 extern void __mnt_drop_write_file(struct file *);
72 extern void chroot_fs_refs(const struct path *, const struct path *);
77 extern void file_sb_list_add(struct file *f, struct super_block *sb);
78 extern void file_sb_list_del(struct file *f);
79 extern void mark_files_ro(struct super_block *);
80 extern struct file *get_empty_filp(void);
85 extern int do_remount_sb(struct super_block *, int, void *, int);
86 extern bool grab_super_passive(struct super_block *sb);
87 extern struct dentry *mount_fs(struct file_system_type *,
88 int, const char *, void *);
89 extern struct super_block *user_get_super(dev_t);
101 extern struct file *do_filp_open(int dfd, struct filename *pathname,
102 const struct open_flags *op);
103 extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
104 const char *, const struct open_flags *);
106 extern long do_handle_open(int mountdirfd,
107 struct file_handle __user *ufh, int open_flag);
108 extern int open_check_o_direct(struct file *f);
113 extern spinlock_t inode_sb_list_lock;
114 extern void inode_add_lru(struct inode *inode);
119 extern void inode_wb_list_del(struct inode *inode);
121 extern int get_nr_dirty_inodes(void);
122 extern void evict_inodes(struct super_block *);
123 extern int invalidate_inodes(struct super_block *, bool);
128 extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
133 extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
138 extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
139 loff_t *opos, size_t len, unsigned int flags);
144 extern const struct file_operations pipefifo_fops;