1 files changed, 11 insertions, 1 deletions

diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index e151d4c9298d..ed419c62dde1 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -10,6 +10,7 @@
 
 #include <linux/bio.h>
 #include <linux/blkdev.h>
+#include <linux/math64.h>
 #include <linux/ratelimit.h>
 
 struct dm_dev;
@@ -405,13 +406,14 @@ 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);
 
+struct queue_limits *dm_get_queue_limits(struct mapped_device *md);
+
 /*
  * Geometry functions.
  */
 int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo);
 int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo);
 
-
 /*-----------------------------------------------------------------
  * Functions for manipulating device-mapper tables.
  *---------------------------------------------------------------*/
@@ -550,6 +552,14 @@ extern struct ratelimit_state dm_ratelimit_state;
 #define DM_MAPIO_REMAPPED       1
 #define DM_MAPIO_REQUEUE        DM_ENDIO_REQUEUE
 
+#define dm_sector_div64(x, y)( \
+{ \
+        u64 _res; \
+        (x) = div64_u64_rem(x, y, &_res); \
+        _res; \
+} \
+)
+
 /*
  * Ceiling(n / sz)
  */