On 04/29, Colin Cross wrote:
>
> @@ -46,10 +46,10 @@ static int try_to_freeze_tasks(bool user_only)
> todo = 0;
> read_lock(&tasklist_lock);
> do_each_thread(g, p) {
> - if (p == current || !freeze_task(p))
> + if (p == current || freezer_should_skip(p))
> continue;
>
> - if (!freezer_should_skip(p))
> + if (freeze_task(p))
> todo++;
What if we race with freezer_count() ?
try_to_freeze_tasks() can wrongly succeed leaving the running task
unfrozen, no?
Oleg.
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