int block_read_full_page(struct page*, get_block_t*);
int block_is_partially_uptodate(struct page *page, read_descriptor_t *desc,
unsigned long from);
-int block_write_begin_newtrunc(struct file *, struct address_space *,
- loff_t, unsigned, unsigned,
- struct page **, void **, get_block_t*);
-int block_write_begin(struct file *, struct address_space *,
- loff_t, unsigned, unsigned,
- struct page **, void **, get_block_t*);
+int block_write_begin(struct address_space *mapping, loff_t pos, unsigned len,
+ unsigned flags, struct page **pagep, get_block_t *get_block);
int __block_write_begin(struct page *page, loff_t pos, unsigned len,
get_block_t *get_block);
int block_write_end(struct file *, struct address_space *,