diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 9d3e7760b0928c586e2cf76dfa26194f010e56ce..f02a74feee6365c0ef9e0f89a22eebb14b241c1b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -59,6 +59,14 @@ struct blk_keyslot_manager;
  */
 #define BLKCG_MAX_POLS		5
 
+static inline int blk_validate_block_size(unsigned int bsize)
+{
+	if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
+		return -EINVAL;
+
+	return 0;
+}
+
 typedef void (rq_end_io_fn)(struct request *, blk_status_t);
 
 /*