Re: [PATCH][USBATM]: convert heavy init dances to kthread API

From: Pavel Emelyanov
Date: Thu Feb 07 2008 - 11:38:36 EST


Alan Stern wrote:
> On Thu, 7 Feb 2008, Pavel Emelyanov wrote:
>
>>> Does the kthread API guarantee that the kthread is not running until you call
>> It does. That's why the race, you mentioned above is impossible.
>
> That is wrong. The API guarantees only that the kthread is initially
> created in a non-running state. It cannot guarantee that no other
> task will wake up the kthread before the caller does.

Other tasks cannot wake this thread up since they do not
know the struct task_struct pointer.

> Alan Stern
>
>

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/