workqueue: add cancel_work()
Like cancel_delayed_work(), but for regular work.
Signed-off-by: Jens Axboe <axboe@fb.com>
Mehed-by: Tejun Heo <tj@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index ef071ca..bd81f03 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -2974,6 +2974,31 @@
}
EXPORT_SYMBOL(flush_delayed_work);
+static bool __cancel_work(struct work_struct *work, bool is_dwork)
+{
+ unsigned long flags;
+ int ret;
+
+ do {
+ ret = try_to_grab_pending(work, is_dwork, &flags);
+ } while (unlikely(ret == -EAGAIN));
+
+ if (unlikely(ret < 0))
+ return false;
+
+ set_work_pool_and_clear_pending(work, get_work_pool_id(work));
+ local_irq_restore(flags);
+ return ret;
+}
+
+/*
+ * See cancel_delayed_work()
+ */
+bool cancel_work(struct work_struct *work)
+{
+ return __cancel_work(work, false);
+}
+
/**
* cancel_delayed_work - cancel a delayed work
* @dwork: delayed_work to cancel
@@ -2992,20 +3017,7 @@
*/
bool cancel_delayed_work(struct delayed_work *dwork)
{
- unsigned long flags;
- int ret;
-
- do {
- ret = try_to_grab_pending(&dwork->work, true, &flags);
- } while (unlikely(ret == -EAGAIN));
-
- if (unlikely(ret < 0))
- return false;
-
- set_work_pool_and_clear_pending(&dwork->work,
- get_work_pool_id(&dwork->work));
- local_irq_restore(flags);
- return ret;
+ return __cancel_work(&dwork->work, true);
}
EXPORT_SYMBOL(cancel_delayed_work);