-extern struct vfsmount * sysfs_mount;
-extern struct kmem_cache *sysfs_dir_cachep;
-
-extern void sysfs_delete_inode(struct inode *inode);
-extern struct inode * sysfs_new_inode(mode_t mode, struct sysfs_dirent *);
-extern int sysfs_create(struct dentry *, int mode, int (*init)(struct inode *));
-
-extern int sysfs_dirent_exist(struct sysfs_dirent *, const unsigned char *);
-extern int sysfs_make_dirent(struct sysfs_dirent *, struct dentry *, void *,
- umode_t, int);
-
-extern int sysfs_add_file(struct dentry *, const struct attribute *, int);
-extern int sysfs_hash_and_remove(struct dentry * dir, const char * name);
-extern struct sysfs_dirent *sysfs_find(struct sysfs_dirent *dir, const char * name);
-
-extern int sysfs_create_subdir(struct kobject *, const char *, struct dentry **);
-extern void sysfs_remove_subdir(struct dentry *);
-
-extern const unsigned char * sysfs_get_name(struct sysfs_dirent *sd);
-extern void sysfs_drop_dentry(struct sysfs_dirent *sd, struct dentry *parent);
-extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
-
-extern spinlock_t sysfs_lock;
-extern struct rw_semaphore sysfs_rename_sem;
-extern struct super_block * sysfs_sb;
-extern const struct file_operations sysfs_dir_operations;
-extern const struct file_operations sysfs_file_operations;
-extern const struct file_operations bin_fops;
-extern const struct inode_operations sysfs_dir_inode_operations;
-extern const struct inode_operations sysfs_symlink_inode_operations;