- int (*write_page)(struct v_inode* inode, void* pg, size_t len, size_t fpos);
- int (*read_page)(struct v_inode* inode, void* pg, size_t len, size_t fpos);
+ int (*write_page)(struct v_inode* inode, void* pg, size_t fpos);
+ int (*read_page)(struct v_inode* inode, void* pg, size_t fpos);