#ifdef CONFIG_BLOCK
struct writeback_control;
struct readahead_control;
void mpage_readahead(struct readahead_control *, get_block_t get_block);
int mpage_read_folio(struct folio *folio, get_block_t get_block);
int __mpage_writepages(struct address_space *mapping,
struct writeback_control *wbc, get_block_t get_block,
int (*write_folio)(struct folio *folio,
struct writeback_control *wbc));
static inline int mpage_writepages(struct address_space *mapping,
struct writeback_control *wbc, get_block_t get_block)
{
return __mpage_writepages(mapping, wbc, get_block, NULL);
}
#endif