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SubjectRe: [RFC][PATCH 1/3] Freezer: Fix vfork problem
On 02/28, Rafael J. Wysocki wrote:
> On Wednesday, 28 February 2007 02:23, Srivatsa Vaddagiri wrote:
> > On Wed, Feb 28, 2007 at 12:53:14AM +0300, Oleg Nesterov wrote:
> > > I think it is good. Srivatsa?
> >
> > Maybe additional comments on why we don't skip vfork kernel tasks may be good.
> Which is because we don't want the kernel threads to be frozen in unexpected
> places, so we allow them to block freeze_processes() instead or to set

... and because in fact it won't block freeze_processes(), ____call_usermodehelper
(the child) does a minimum before exec/exit, and it can't be frozen until it wakes
up the parent.


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