From: Linus Walleij <linus.walleij@linaro.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: Adrian Hunter <adrian.hunter@intel.com>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
linux-mm@kvack.org
Subject: Re: 4.14-rc2 on thinkpad x220: out of memory when inserting mmc card
Date: Mon, 23 Oct 2017 14:16:40 +0200 [thread overview]
Message-ID: <CACRpkdaa6qq91+dQ43EZDvDefbM3tjwLX5e+nNZouwXM0xJ=4w@mail.gmail.com> (raw)
In-Reply-To: <20171023093109.GI32228@amd>
On Mon, Oct 23, 2017 at 11:31 AM, Pavel Machek <pavel@ucw.cz> wrote:
>> > Thinkpad X220... how do I tell if I was using them? I believe so,
>> > because I uncovered bug in them before.
>>
>> You are certainly using bounce buffers. What does lspci -knn show?
>
> Here is the output:
> 0d:00.0 System peripheral [0880]: Ricoh Co Ltd PCIe SDXC/MMC Host Controller [1180:e823] (rev 07)
> Subsystem: Lenovo Device [17aa:21da]
> Kernel driver in use: sdhci-pci
So that is a Ricoh driver, one of the few that was supposed to benefit
from bounce buffers.
Except that if you actually turned it on:
> [10994.302196] kworker/2:1: page allocation failure: order:4,
so it doesn't have enough memory to use these bounce buffers
anyway.
I'm now feel it was the right thing to delete them.
I assume the problem doesn't appear in later -rc:s am I right?
Yours,
Linus Walleij
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next prev parent reply other threads:[~2017-10-23 12:16 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170905194739.GA31241@amd>
[not found] ` <20171001093704.GA12626@amd>
2017-10-01 10:26 ` Pavel Machek
2017-10-01 10:57 ` Tetsuo Handa
2017-10-02 7:52 ` Adrian Hunter
2017-10-02 8:41 ` Pavel Machek
2017-10-02 12:06 ` Linus Walleij
2017-10-02 13:03 ` Pavel Machek
2017-10-03 6:27 ` Adrian Hunter
2017-10-23 9:31 ` Pavel Machek
2017-10-23 12:13 ` Adrian Hunter
2017-10-23 12:16 ` Linus Walleij [this message]
2017-10-23 21:27 ` Pavel Machek
2017-10-24 6:59 ` Adrian Hunter
2017-10-26 13:44 ` Linus Walleij
2017-10-02 14:09 ` Linus Walleij
2017-10-03 6:30 ` Adrian Hunter
2017-10-04 7:53 ` Linus Walleij
2017-10-04 8:01 ` Ulf Hansson
2017-10-02 14:44 ` Michal Hocko
2017-10-02 14:55 ` Tetsuo Handa
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