diff --git a/fs/block_dev.c b/fs/block_dev.c
index 71ccab1..30b8d56 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1857,7 +1857,7 @@
 	if (!S_ISBLK(inode->i_mode))
 		goto fail;
 	error = -EACCES;
-	if (path.mnt->mnt_flags & MNT_NODEV)
+	if (!may_open_dev(&path))
 		goto fail;
 	error = -ENOMEM;
 	bdev = bd_acquire(inode);