diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 109add33b3318496d520a02c0a0a4aceab9f0360..28ea02865ecc1fdec6203143ff08cfbdb520bb4c 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -56,6 +56,14 @@ struct blk_stat_callback;
  */
 #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);
 
 #define BLK_RL_SYNCFULL		(1U << 0)