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SubjectRe: Drivers that potentially leave state as TASK_{UN}INTERRUPTIBLE
John Levon wrote:
>
> Am I right ? against test8pre1
>
> Also, is it a bug to not set TASK_{UN}INTERRUPTIBLE before doing a
> schedule_timeout() ? What will happen ?
>
Well, first the "timeout" call will return immediately. Next, when the
time out actually happens, if the task is not TASK_RUNNING (i.e. it is
waiting for some other thing) it will wake_up. So the sleep is lost and
it is possible to have a false wake up (could even wake up a zombie).
If the actual timeout happens while the task is TASK_RUNNING it is
ignored.

George
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