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-rw-r--r--include/linux/device-mapper.h18
1 files changed, 17 insertions, 1 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index a90222e3297..08d783592b7 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -13,7 +13,6 @@
struct dm_target;
struct dm_table;
-struct dm_dev;
struct mapped_device;
struct bio_vec;
@@ -84,6 +83,12 @@ void dm_error(const char *message);
*/
void dm_set_device_limits(struct dm_target *ti, struct block_device *bdev);
+struct dm_dev {
+ struct block_device *bdev;
+ int mode;
+ char name[16];
+};
+
/*
* Constructors should call these functions to ensure destination devices
* are opened/closed correctly.
@@ -202,6 +207,7 @@ 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_noflush_suspending(struct dm_target *ti);
+union map_info *dm_get_mapinfo(struct bio *bio);
/*
* Geometry functions.
@@ -232,6 +238,11 @@ int dm_table_add_target(struct dm_table *t, const char *type,
int dm_table_complete(struct dm_table *t);
/*
+ * Unplug all devices in a table.
+ */
+void dm_table_unplug_all(struct dm_table *t);
+
+/*
* Table reference counting.
*/
struct dm_table *dm_get_table(struct mapped_device *md);
@@ -256,6 +267,11 @@ void dm_table_event(struct dm_table *t);
*/
int dm_swap_table(struct mapped_device *md, struct dm_table *t);
+/*
+ * A wrapper around vmalloc.
+ */
+void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size);
+
/*-----------------------------------------------------------------
* Macros.
*---------------------------------------------------------------*/