unsigned int prev; /* number of the block of PAGE_SIZE bytes that
* was the current one previously
*/
- struct pbe *pbe; /* PBE that corresponds to 'buffer' */
- struct pbe *last_pbe; /* When the image is restored (eg. read
- * from disk) we can store some image
- * data directly in the page frames
- * in which they were before suspend.
- * In such a case the PBEs that
- * correspond to them will be unused.
- * This is the last PBE, so far, that
- * does not correspond to such data.
- */
void *buffer; /* address of the block to read from
* or write to
*/
extern int snapshot_read_next(struct snapshot_handle *handle, size_t count);
extern int snapshot_write_next(struct snapshot_handle *handle, size_t count);
extern int snapshot_image_loaded(struct snapshot_handle *handle);
+extern void snapshot_free_unused_memory(struct snapshot_handle *handle);
#define SNAPSHOT_IOC_MAGIC '3'
#define SNAPSHOT_FREEZE _IO(SNAPSHOT_IOC_MAGIC, 1)