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