Kill filesystem process on test cleanup.

test/test_sshfs.py

@@ -109,7 +109,7 @@ def test_sshfs(tmpdir, debug, cache_timeout, sync_rd, capfd):
         tst_truncate_fd(mnt_dir)
         tst_open_unlink(mnt_dir)
     except:
-        cleanup(mnt_dir)
+        cleanup(mount_process, mnt_dir)
         raise
     else:
         umount(mount_process, mnt_dir)

test/util.py

@@ -20,10 +20,16 @@ def wait_for_mount(mount_process, mnt_dir,
         elapsed += 0.1
     pytest.fail("mountpoint failed to come up")
 
-def cleanup(mnt_dir):
+def cleanup(mount_process, mnt_dir):
     subprocess.call(['fusermount', '-z', '-u', mnt_dir],
                     stdout=subprocess.DEVNULL,
                     stderr=subprocess.STDOUT)
+    mount_process.terminate()
+    try:
+        mount_process.wait(1)
+    except subprocess.TimeoutExpired:
+        mount_process.kill()
+    
 
 def umount(mount_process, mnt_dir):
     subprocess.check_call(['fusermount', '-z', '-u', mnt_dir ])