diff --git a/block/test-iosched.c b/block/test-iosched.c
index 0aad3747de75..15ac86a409bd 100644
--- a/block/test-iosched.c
+++ b/block/test-iosched.c
@@ -911,6 +911,14 @@ static int test_debugfs_init(struct test_iosched *tios)
 	if (!tios->debug.start_sector)
 		goto err;
 
+	tios->debug.sector_range = debugfs_create_u32(
+						"sector_range",
+						S_IRUGO | S_IWUGO,
+						tios->debug.debug_utils_root,
+						&tios->sector_range);
+	if (!tios->debug.sector_range)
+		goto err;
+
 	return 0;
 
 err:
diff --git a/include/linux/test-iosched.h b/include/linux/test-iosched.h
index 82c0ffdf3834..98146e4a0fe1 100644
--- a/include/linux/test-iosched.h
+++ b/include/linux/test-iosched.h
@@ -80,6 +80,8 @@ enum req_unique_type {
  * @debug_test_result:	Exposes the test result to the user
  *			space
  * @start_sector:	The start sector for read/write requests
+ * @sector_range:	Range of the test, starting from start_sector
+ *			(in sectors)
  */
 struct test_debug {
 	struct dentry *debug_root;
@@ -87,6 +89,7 @@ struct test_debug {
 	struct dentry *debug_tests_root;
 	struct dentry *debug_test_result;
 	struct dentry *start_sector;
+	struct dentry *sector_range;
 };
 
 /**
@@ -193,6 +196,8 @@ struct blk_dev_test_type {
  *			new BIOs.
  * @start_sector:	The address of the first sector that can
  *			be accessed by the test
+ * @sector_range:	Range of the test, starting from start_sector
+ *			(in sectors)
  * @wr_rd_next_req_id:	A unique ID to identify WRITE/READ
  *			request to ease the debugging of the
  *			test cases
@@ -226,6 +231,7 @@ struct test_iosched {
 	struct request_queue *req_q;
 	int num_of_write_bios;
 	u32 start_sector;
+	u32 sector_range;
 	int wr_rd_next_req_id;
 	int unique_next_req_id;
 	spinlock_t lock;