struct page *obdfs_getpage(struct inode *inode, unsigned long offset, int create, int locked);
int obdfs_write_one_page(struct file *file, struct page *page, unsigned long offset, unsigned long bytes, const char * buf);
struct page *obdfs_getpage(struct inode *inode, unsigned long offset, int create, int locked);
int obdfs_write_one_page(struct file *file, struct page *page, unsigned long offset, unsigned long bytes, const char * buf);