MINOR: tasklets: Don't attempt to add a tasklet in the list twice.

Don't try to add a tasklet to the run queue if it's already in there, or we
might get an infinite loop.

diff --git a/include/proto/task.h b/include/proto/task.h
index d1371f3..8aceee5 100644 (file)
--- a/include/proto/task.h
+++ b/include/proto/task.h
@@ -205,6 +205,8 @@ static inline struct task *task_unlink_rq(struct task *t)
 
 static inline void tasklet_wakeup(struct tasklet *tl)
 {
+       if (!LIST_ISEMPTY(&tl->list))
+               return;
        LIST_ADDQ(&task_list[tid], &tl->list);
        task_list_size[tid]++;
        HA_ATOMIC_ADD(&tasks_run_queue, 1);