typedef int (*iterate_devices_callout_fn) (struct dm_target *ti,
struct dm_dev *dev,
- sector_t physical_start,
+ sector_t start, sector_t len,
void *data);
typedef int (*dm_iterate_devices_fn) (struct dm_target *ti,
iterate_devices_callout_fn fn,
void *data);
+typedef void (*dm_io_hints_fn) (struct dm_target *ti,
+ struct queue_limits *limits);
+
/*
* Returns:
* 0: The target can handle the next I/O immediately.
* Combine device limits.
*/
int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev,
- sector_t start, void *data);
+ sector_t start, sector_t len, void *data);
struct dm_dev {
struct block_device *bdev;
/*
* Constructors should call these functions to ensure destination devices
* are opened/closed correctly.
- * FIXME: too many arguments.
*/
-int dm_get_device(struct dm_target *ti, const char *path, sector_t start,
- sector_t len, fmode_t mode, struct dm_dev **result);
+int dm_get_device(struct dm_target *ti, const char *path, fmode_t mode,
+ struct dm_dev **result);
void dm_put_device(struct dm_target *ti, struct dm_dev *d);
/*
dm_merge_fn merge;
dm_busy_fn busy;
dm_iterate_devices_fn iterate_devices;
+ dm_io_hints_fn io_hints;
/* For internal device-mapper use. */
struct list_head list;
const char *dm_device_name(struct mapped_device *md);
int dm_copy_name_and_uuid(struct mapped_device *md, char *name, char *uuid);
struct gendisk *dm_disk(struct mapped_device *md);
-int dm_suspended(struct mapped_device *md);
+int dm_suspended(struct dm_target *ti);
int dm_noflush_suspending(struct dm_target *ti);
union map_info *dm_get_mapinfo(struct bio *bio);
union map_info *dm_get_rq_mapinfo(struct request *rq);
/*
* Table reference counting.
*/
-struct dm_table *dm_get_table(struct mapped_device *md);
+struct dm_table *dm_get_live_table(struct mapped_device *md);
void dm_table_get(struct dm_table *t);
void dm_table_put(struct dm_table *t);
/*
* The device must be suspended before calling this method.
+ * Returns the previous table, which the caller must destroy.
*/
-int dm_swap_table(struct mapped_device *md, struct dm_table *t);
+struct dm_table *dm_swap_table(struct mapped_device *md,
+ struct dm_table *t);
/*
* A wrapper around vmalloc.