Delete slow-work timers properly

Slow-work appears to delete its timer as soon as the first user
unregisters, even though other users could be active.  At the same time, it
never seems to delete slow_work_oom_timer.  Arrange for both to happen in
the shutdown path.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/slow-work.c b/kernel/slow-work.c
index cf2bc01186ef..b28d19135f43 100644
--- a/kernel/slow-work.c
+++ b/kernel/slow-work.c
@@ -609,14 +609,14 @@ void slow_work_unregister_user(void)
         if (slow_work_user_count == 0) {
                 printk(KERN_NOTICE "Slow work thread pool: Shutting down\n");
                 slow_work_threads_should_exit = true;
+                del_timer_sync(&slow_work_cull_timer);
+                del_timer_sync(&slow_work_oom_timer);
                 wake_up_all(&slow_work_thread_wq);
                 wait_for_completion(&slow_work_last_thread_exited);
                 printk(KERN_NOTICE "Slow work thread pool:"
                        " Shut down complete\n");
         }
 
-        del_timer_sync(&slow_work_cull_timer);
-
         mutex_unlock(&slow_work_user_lock);
 }
 EXPORT_SYMBOL(slow_work_unregister_user);