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SubjectRe: [PATCH -mm 3/4][AIO] - AIO completion signal notification
On Thu, 23 Nov 2006 09:28:05 +0100
Sébastien Dugué <sebastien.dugue@bull.net> wrote:

> > > + if (notify->notify == (SIGEV_SIGNAL|SIGEV_THREAD_ID)) {
> > > + /*
> > > + * This reference will be dropped in really_put_req() when
> > > + * we're done with the request.
> > > + */
> > > + get_task_struct(target);
> > > + }
> >
> > It worries me that this function can save away a task_struct* without
> > having taken a reference against it.
> >
>
> OK. Does moving 'notify->target = target;' after the get_task_struct() will
> do, or am I missing something more subtle?

Well it's your code - you tell me ;)

It is unsafe (and rather pointless) to be saving the address of some structure
which can be freed at any time.
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