ocfs2: don't use flush_scheduled_work()

flush_scheduled_work() is deprecated and scheduled to be removed.

* cancel_delayed_work() + flush_schedule_work() ->
cancel_delayed_work_sync().

* flush qs->qs_work directly on exit instead.

Signed-off-by: Tejun Heo <[e-mail]>
Acked-by: Joel Becker <[e-mail]>
Cc: Mark Fasheh <[e-mail]>

fs/ocfs2/cluster/heartbeat.c

···
 
 static void o2hb_disarm_write_timeout(struct o2hb_region *reg)
 {
-	cancel_delayed_work(&reg->hr_write_timeout_work);
-	flush_scheduled_work();
+	cancel_delayed_work_sync(&reg->hr_write_timeout_work);
 }
 
 static inline void o2hb_bio_wait_init(struct o2hb_bio_wait_ctxt *wc)

fs/ocfs2/cluster/quorum.c

···
 
 void o2quo_exit(void)
 {
-	flush_scheduled_work();
+	struct o2quo_state *qs = &o2quo_state;
+
+	flush_work_sync(&qs->qs_work);
 }