linux-kernel - Re: [PATCH v2 1/2] mm: soft-offline: return -EBUSY if set_hwpoison_free_buddy

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Message-Id: <20190610142033.6096a8ec73d4bf40b2612fb5@linux-foundation.org>
Date:   Mon, 10 Jun 2019 14:20:33 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Naoya Horiguchi <n-horiguchi@...jp.nec.com>
Cc:     linux-mm@...ck.org, Michal Hocko <mhocko@...nel.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        xishi.qiuxishi@...baba-inc.com,
        "Chen, Jerry T" <jerry.t.chen@...el.com>,
        "Zhuo, Qiuxu" <qiuxu.zhuo@...el.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] mm: soft-offline: return -EBUSY if
 set_hwpoison_free_buddy_page() fails

On Mon, 10 Jun 2019 17:18:05 +0900 Naoya Horiguchi <n-horiguchi@...jp.nec.com> wrote:

> The pass/fail of soft offline should be judged by checking whether the
> raw error page was finally contained or not (i.e. the result of
> set_hwpoison_free_buddy_page()), but current code do not work like that.
> So this patch is suggesting to fix it.

Please describe the user-visible runtime effects of this change?