linux-kernel - Re: [PATCH 05/17] freezer: rename thaw_process() to __thaw

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Date:	Sun, 06 Nov 2011 22:40:10 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	Tejun Heo <tj@...nel.org>
CC:	rjw@...k.pl, paul@...lmenage.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, arnd@...db.de, oleg@...hat.com,
	matthltc@...ibm.com, Paul Menage <menage@...gle.com>
Subject: Re: [PATCH 05/17] freezer: rename thaw_process() to __thaw_task()
 and simplify the implementation

On 11/06/2011 10:21 PM, Tejun Heo wrote:
> Hello,
> 
> On Sun, Nov 06, 2011 at 05:34:27PM +0530, Srivatsa S. Bhat wrote:
>> On 11/01/2011 12:35 AM, Tejun Heo wrote:
>>>   * task_lock() is needed to prevent the race with refrigerator() which may
>>                                                      ^^^^^^
>>                                                 __refrigerator()?
> 
> I don't think this really matters.  Maybe just drop () from the
> comment?

Sure, that would do. It was rather trivial anyway...

> 
>> Rebasing to latest kernel, we need to do the conversion in mm/oom_kill.c as well,
>> (and consequently add __thaw_task() empty function under !CONFIG_FREEZER, in
>> include/linux/freezer.h)
> 
> Yes, for merging, we should do that, but for longer term, as we can
> modify freezing condition with relative ease now, I think we should
> make tasks being killed ignore freezer instead of relying on
> explicitly calling __thaw_task() which is inherently racy.
> 

OK.. And yes, many thanks for your efforts to stabilize the freezer
subsystem :)

Thanks,
Srivatsa S. Bhat

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