linux-kernel - Re: [PATCH 1/3] PM / Sleep: Make [un]lock_system

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Date:	Mon, 05 Dec 2011 23:11:40 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	Tejun Heo <tj@...nel.org>
CC:	rjw@...k.pl, pavel@....cz, len.brown@...el.com,
	ebiederm@...ssion.com, rdunlap@...otime.net,
	linux-doc@...r.kernel.org, kexec@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	Oleg Nesterov <oleg@...hat.com>
Subject: Re: [PATCH 1/3] PM / Sleep: Make [un]lock_system_sleep() generic

On 12/05/2011 11:00 PM, Tejun Heo wrote:

> (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?
> 


Oh well, then yes, that sounds like a better idea. Will send patches for
that. Thank you.

Regards,
Srivatsa S. Bhat

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