diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 848aab6c6982..805072406552 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -49,6 +49,14 @@ struct pr_ops;
 
 typedef void (rq_end_io_fn)(struct request *, int);
 
+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;
+}
+
 #define BLK_RL_SYNCFULL		(1U << 0)
 #define BLK_RL_ASYNCFULL	(1U << 1)