From: Gioh Kim <gioh.kim@lge.com>
To: Michal Nazarewicz <mina86@mina86.com>,
Marek Szyprowski <m.szyprowski@samsung.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: "Joonsoo Kim" <iamjoonsoo.kim@lge.com>,
"Mel Gorman" <mgorman@suse.de>, 이건호 <gunho.lee@lge.com>
Subject: Re: [RFC] CMA page migration failure due to buffers on bh_lru
Date: Fri, 27 Jun 2014 08:23:46 +0900 [thread overview]
Message-ID: <53ACAB82.6020201@lge.com> (raw)
In-Reply-To: <xa1td2dvmznq.fsf@mina86.com>
2014-06-27 i??i ? 12:57, Michal Nazarewicz i?' e,?:
> On Tue, Jun 24 2014, Gioh Kim <gioh.kim@lge.com> wrote:
>> Hello,
>>
>> I am trying to apply CMA feature for my platform.
>> My kernel version, 3.10.x, is not allocating memory from CMA area so that I applied
>> a Joonsoo Kim's patch (https://lkml.org/lkml/2014/5/28/64).
>> Now my platform can use CMA area effectively.
>>
>> But I have many failures to allocate memory from CMA area.
>> I found the same situation to Laura Abbott's patch descrbing,
>> https://lkml.org/lkml/2012/8/31/313,
>> that releases buffer-heads attached at CPU's LRU list.
>>
>> If Joonsoo's patch is applied and/or CMA feature is applied more and more,
>> buffer-heads problem is going to be serious definitely.
>>
>> Please look into the Laura's patch again.
>> I think it must be applied with Joonsoo's patch.
>
> Just to make sure I understood you correctly, you're saying Laura's
> patch at <https://lkml.org/lkml/2012/8/31/313> fixes your issue?
>
Yes, it is.
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next prev parent reply other threads:[~2014-06-26 23:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-24 1:12 [RFC] CMA page migration failure due to buffers on bh_lru Gioh Kim
2014-06-26 15:57 ` Michal Nazarewicz
2014-06-26 23:23 ` Gioh Kim [this message]
2014-06-29 19:49 ` Laura Abbott
2014-07-01 1:07 ` Gioh Kim
2014-07-01 2:02 ` Laura Abbott
2014-07-02 5:46 ` Andrew Morton
2014-07-03 7:34 ` Gioh Kim
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