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
;