linux-kernel - Re: [PATCH 02/16] freezer: don't unnecessarily set PF

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Date:	Fri, 19 Aug 2011 13:43:06 -0300
From:	Gustavo Padovan <padovan@...fusion.mobi>
To:	Tejun Heo <tj@...nel.org>
Cc:	rjw@...k.pl, menage@...gle.com, linux-kernel@...r.kernel.org,
	arnd@...db.de, oleg@...hat.com,
	Marcel Holtmann <marcel@...tmann.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	wwang <wei_wang@...lsil.com.cn>
Subject: Re: [PATCH 02/16] freezer: don't unnecessarily set PF_NOFREEZE
 explicitly

Hi Tejun,

* Tejun Heo <tj@...nel.org> [2011-08-19 16:16:08 +0200]:

> Some drivers set PF_NOFREEZE in their kthread functions which is
> completely unnecessary and racy - some part of freezer code doesn't
> consider cases where PF_NOFREEZE is set asynchronous to freezer
> operations.
> 
> In general, there's no reason to allow setting PF_NOFREEZE explicitly.
> Remove them and change the documentation to note that setting
> PF_NOFREEZE directly isn't allowed.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Cc: Marcel Holtmann <marcel@...tmann.org>
> Cc: "Gustavo F. Padovan" <padovan@...fusion.mobi>
> Cc: Samuel Ortiz <sameo@...ux.intel.com>
> Cc: wwang <wei_wang@...lsil.com.cn>
> ---
>  Documentation/power/freezing-of-tasks.txt |    2 +-
>  drivers/bluetooth/btmrvl_main.c           |    2 --
>  drivers/mfd/twl4030-irq.c                 |    3 ---
>  drivers/mfd/twl6030-irq.c                 |    2 --
>  drivers/staging/rts_pstor/rtsx.c          |    2 --
>  5 files changed, 1 insertions(+), 10 deletions(-)

Acked-by: Gustavo F. Padovan <padovan@...fusion.mobi>

	Gustavo
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