Re: [PATCH 1/3] PM / Sleep: Make [un]lock_system_sleep() generic

From: Tejun Heo
Date: Mon Dec 05 2011 - 12:31:07 EST


(cc'ing Oleg)

On Mon, Dec 05, 2011 at 10:55:51PM +0530, Srivatsa S. Bhat wrote:
> I wanted these APIs to be generic, not restricted to work only for userspace
> processes. Both freezer_do_not_count() and freezer_count() are effective only
> when current->mm is non-NULL (ie., only for userspace ones).
> I think I have documented this in the patch which added these things to the
> 2 APIs. See commit 6a76b7a in linux-pm/linux-next.

I see. Oleg was curious about the ->mm condition too and IIRC there's
no reason for that restriction. Maybe removing that in another patch
and using the count functions is better?

Thanks.

--
tejun
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