diff --git a/kernel/mars_if.c b/kernel/mars_if.c
index e3b7ba15..d2687aa6 100644
--- a/kernel/mars_if.c
+++ b/kernel/mars_if.c
@@ -59,7 +59,7 @@
 #include <linux/blkdev.h>
 
 #include "mars.h"
-#include "lib_limiter.h"
+#include "mars_if.h"
 
 //      remove_this
 
@@ -83,8 +83,6 @@ struct mars_limiter if_throttle = {
 
 ///////////////////////// own type definitions ////////////////////////
 
-#include "mars_if.h"
-
 #define IF_HASH_MAX   (PAGE_SIZE / sizeof(struct if_hash_anchor))
 #define IF_HASH_CHUNK (PAGE_SIZE * 32)
 
@@ -596,6 +594,9 @@ void if_make_request(struct request_queue *q, struct bio *bio)
 //      end_remove_this
 		void *data;
 
+		/* gather statistics on IOPS etc */
+		mars_limit(&brick->io_limiter, bv_len);
+
 #ifdef ARCH_HAS_KMAP
 #error FIXME: the current infrastructure cannot deal with HIGHMEM / kmap()
 #endif
diff --git a/kernel/mars_if.h b/kernel/mars_if.h
index 9b4115f4..3d1caf43 100644
--- a/kernel/mars_if.h
+++ b/kernel/mars_if.h
@@ -24,6 +24,8 @@
 #ifndef MARS_IF_H
 #define MARS_IF_H
 
+#include "lib_limiter.h"
+
 #include <linux/semaphore.h>
 
 #define MARS_MAX_SEGMENT_SIZE (PAGE_SIZE)
@@ -107,6 +109,7 @@ struct if_brick {
 	// inspectable
 	atomic_t open_count;
 	atomic_t flying_count;
+	struct mars_limiter io_limiter;
 	// private
 	struct semaphore switch_sem;
 	struct say_channel *say_channel;