linux-kernel - Re: [PATCH] mmc: card: don't use PF

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Message-ID: <56E9707D.5070004@fb.com>
Date:	Wed, 16 Mar 2016 07:41:01 -0700
From:	Jens Axboe <axboe@...com>
To:	Martin Kepplinger <martink@...teo.de>, <ulf.hansson@...aro.org>,
	<chuanxiao.dong@...el.com>, <fabf@...net.be>
CC:	<linux-mmc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mmc: card: don't use PF_MEMALLOC

On 03/16/2016 04:43 AM, Martin Kepplinger wrote:
> PF_MEMALLOC is assigned to processes by mm. If drivers prevent memory
> reclaim and mm is not in control, strange hang-up or OOM Killer invocation
> could happen.
>
> Signed-off-by: Martin Kepplinger <martink@...teo.de>
> ---
> I use MMC cards with this change perfectly fine. As I understand it,
> even *if* PF_MEMALLOC has a real reason to be here, I think it should
> be very well documented.

Did you try swap on mmcblk?

-- 
Jens Axboe