--- btrfs-progs-v4.17/libbtrfsutil/python/subvolume.c.orig	2018-06-15 16:21:17.000000000 +0200
+++ btrfs-progs-v4.17/libbtrfsutil/python/subvolume.c	2018-07-19 18:23:25.792471799 +0200
@@ -322,7 +322,7 @@
 
 PyObject *create_subvolume(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	static char *keywords[] = {"path", "async", "qgroup_inherit", NULL};
+	static char *keywords[] = {"path", "async_", "qgroup_inherit", NULL};
 	struct path_arg path = {.allow_fd = false};
 	enum btrfs_util_error err;
 	int async = 0;
@@ -352,7 +352,7 @@
 PyObject *create_snapshot(PyObject *self, PyObject *args, PyObject *kwds)
 {
 	static char *keywords[] = {
-		"source", "path", "recursive", "read_only", "async",
+		"source", "path", "recursive", "read_only", "async_",
 		"qgroup_inherit", NULL,
 	};
 	struct path_arg src = {.allow_fd = true}, dst = {.allow_fd = false};
--- btrfs-progs-v4.17/libbtrfsutil/python/tests/test_subvolume.py.orig	2018-06-15 16:21:17.000000000 +0200
+++ btrfs-progs-v4.17/libbtrfsutil/python/tests/test_subvolume.py	2018-07-19 18:24:06.355804667 +0200
@@ -202,7 +202,7 @@
         btrfsutil.create_subvolume(subvol + '6//')
         self.assertTrue(btrfsutil.is_subvolume(subvol + '6'))
 
-        transid = btrfsutil.create_subvolume(subvol + '7', async=True)
+        transid = btrfsutil.create_subvolume(subvol + '7', async_=True)
         self.assertTrue(btrfsutil.is_subvolume(subvol + '7'))
         self.assertGreater(transid, 0)
 
@@ -265,7 +265,7 @@
         btrfsutil.create_snapshot(subvol, snapshot + '2', recursive=True)
         self.assertTrue(os.path.exists(os.path.join(snapshot + '2', 'nested/more_nested/nested_dir')))
 
-        transid = btrfsutil.create_snapshot(subvol, snapshot + '3', recursive=True, async=True)
+        transid = btrfsutil.create_snapshot(subvol, snapshot + '3', recursive=True, async_=True)
         self.assertTrue(os.path.exists(os.path.join(snapshot + '3', 'nested/more_nested/nested_dir')))
         self.assertGreater(transid, 0)