linux-kernel - Re: [RFC] HWPOISON: soft offlining for non-lru movable page

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Date:   Thu, 19 Jan 2017 09:21:49 +0800
From:   Yisheng Xie <xieyisheng1@...wei.com>
To:     Michal Hocko <mhocko@...nel.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <n-horiguchi@...jp.nec.com>, <akpm@...ux-foundation.org>,
        <minchan@...nel.org>, <vbabka@...e.cz>, <guohanjun@...wei.com>,
        <qiuxishi@...wei.com>
Subject: Re: [RFC] HWPOISON: soft offlining for non-lru movable page



On 2017/1/18 17:51, Michal Hocko wrote:
> On Wed 18-01-17 12:00:54, Yisheng Xie wrote:
>> This patch is to extends soft offlining framework to support
>> non-lru page, which already support migration after
>> commit bda807d44454 ("mm: migrate: support non-lru movable page
>> migration")
>>
>> When memory corrected errors occur on a non-lru movable page,
>> we can choose to stop using it by migrating data onto another
>> page and disable the original (maybe half-broken) one.
> 
> soft_offline_movable_page duplicates quite a lot from
> __soft_offline_page. Would it be better to handle both cases in
> __soft_offline_page?
> 
Hi Michal,
Thanks for reviewing.
Yes, the most code of soft_offline_movable_page is duplicates with
__soft_offline_page, I use a single function to make code looks clear,
just as what soft_offline_hugetlb_page do.

I will try to make a v2 as your suggestion.

Thanks
Yisheng Xie.