Re: [RFC][PATCH 1/3] Freezer: Fix vfork problem

[Oleg Nesterov]

On 02/26, Srivatsa Vaddagiri wrote:
>
> On Mon, Feb 26, 2007 at 03:00:43PM +0300, Oleg Nesterov wrote:
> > In that case we should also modify ____call_usermodehelper(), otherwise we have
> > the same "deadlock" if it is frozen. But this is not so easy to do as I thought
> > before.
> 
> Before ____call_usermodehelper can freeze, it should have entered userspace 
> right? By that time, its vfork parent should have definitely woken up,
> which should avoid the deadlock you point out?

Ah, yes, thanks for correcting me.

We are doing flush_old_exec() a way before entering userspace of course.

Oleg.

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