void obdfs_cleanup_pgrqcache(void);
inline void obdfs_pgrq_del(struct obdfs_pgrq *pgrq);
int obdfs_readpage(struct file *file, struct page *page);
+int obdfs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to);
+int obdfs_commit_write(struct file *file, struct page *page, unsigned from, unsigned to);
int obdfs_writepage(struct page *page);
struct page *obdfs_getpage(struct inode *inode, unsigned long offset,
int create, int locked);