Hello,

On Mon, Sep 21, 2015 at 03:03:45PM +0200, Petr Mladek wrote:
...

Note that flush() does not guarantee that the queue is empty. drain()
is more safe. It returns when the queue is really empty. Also it warns

Maybe it'd be better to be a bit more specific.  drain() is safer
because it can handle self-requeueing work items.

when too many work is being queued when draining.

...

+/**
+ * destroy_kthread_worker - destroy a kthread worker
+ * @worker: worker to be destroyed
+ *
+ * Destroy @worker. It should be idle when this is called.

So, no new work item should be queued from this point on but @worker
is allowed to be not idle.

Thanks.

-- 
tejun

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