extern int zfs_getpage(struct inode *ip, struct page *pl[], int nr_pages);
extern int zfs_putpage(struct page *page, struct writeback_control *wbc,
void *data);
extern int zfs_getpage(struct inode *ip, struct page *pl[], int nr_pages);
extern int zfs_putpage(struct page *page, struct writeback_control *wbc,
void *data);