[mirror_ubuntu-focal-kernel.git] / include / linux / mpage.h

/*
 * include/linux/mpage.h
 *
 * Contains declarations related to preparing and submitting BIOS which contain
 * multiple pagecache pages.
 */

/*
 * (And no, it doesn't do the #ifdef __MPAGE_H thing, and it doesn't do
 * nested includes.  Get it right in the .c file).
 */

struct writeback_control;
typedef int (writepage_t)(struct page *page, struct writeback_control *wbc);

int mpage_readpages(struct address_space *mapping, struct list_head *pages,
				unsigned nr_pages, get_block_t get_block);
int mpage_readpage(struct page *page, get_block_t get_block);
int mpage_writepages(struct address_space *mapping,
		struct writeback_control *wbc, get_block_t get_block);
int mpage_writepage(struct page *page, get_block_t *get_block,
		struct writeback_control *wbc);
int __mpage_writepages(struct address_space *mapping,
		struct writeback_control *wbc, get_block_t get_block,
		writepage_t writepage);

static inline int
generic_writepages(struct address_space *mapping, struct writeback_control *wbc)
{
	return mpage_writepages(mapping, wbc, NULL);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* include/linux/mpage.h
	3	*
	4	* Contains declarations related to preparing and submitting BIOS which contain
	5	* multiple pagecache pages.
	6	*/
	7
	8	/*
	9	* (And no, it doesn't do the #ifdef __MPAGE_H thing, and it doesn't do
	10	* nested includes. Get it right in the .c file).
	11	*/
	12
	13	struct writeback_control;
	14	typedef int (writepage_t)(struct page page, struct writeback_control wbc);
	15
	16	int mpage_readpages(struct address_space mapping, struct list_head pages,
	17	unsigned nr_pages, get_block_t get_block);
	18	int mpage_readpage(struct page *page, get_block_t get_block);
	19	int mpage_writepages(struct address_space *mapping,
	20	struct writeback_control *wbc, get_block_t get_block);
	21	int mpage_writepage(struct page page, get_block_t get_block,
	22	struct writeback_control *wbc);
	23	int __mpage_writepages(struct address_space *mapping,
	24	struct writeback_control *wbc, get_block_t get_block,
	25	writepage_t writepage);
	26
	27	static inline int
	28	generic_writepages(struct address_space mapping, struct writeback_control wbc)
	29	{
	30	return mpage_writepages(mapping, wbc, NULL);
	31	}