From: Mike Kravetz <mike.kravetz@oracle.com>
To: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>, linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@kernel.org>,
xishi.qiuxishi@alibaba-inc.com, "Chen,
Jerry T" <jerry.t.chen@intel.com>,
"Zhuo, Qiuxu" <qiuxu.zhuo@intel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/2] mm: soft-offline: return -EBUSY if set_hwpoison_free_buddy_page() fails
Date: Mon, 10 Jun 2019 17:19:45 -0700 [thread overview]
Message-ID: <8e8e6afc-cddb-9e79-c8ae-c2814b73cbe9@oracle.com> (raw)
In-Reply-To: <1560154686-18497-2-git-send-email-n-horiguchi@ah.jp.nec.com>
On 6/10/19 1:18 AM, Naoya Horiguchi 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.
>
> Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
> Fixes: 6bc9b56433b76 ("mm: fix race on soft-offlining")
> Cc: <stable@vger.kernel.org> # v4.19+
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
To follow-up on Andrew's comment/question about user visible effects. Without
this fix, there are cases where madvise(MADV_SOFT_OFFLINE) may not offline the
original page and will not return an error. Are there any other visible
effects?
--
Mike Kravetz
next prev parent reply other threads:[~2019-06-11 0:20 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-10 8:18 [PATCH v2 00/02] fix return value issue of soft offlining hugepages Naoya Horiguchi
2019-06-10 8:18 ` [PATCH v2 1/2] mm: soft-offline: return -EBUSY if set_hwpoison_free_buddy_page() fails Naoya Horiguchi
2019-06-10 21:20 ` Andrew Morton
2019-06-10 22:51 ` Naoya Horiguchi
2019-06-11 0:19 ` Mike Kravetz [this message]
2019-06-11 0:57 ` Naoya Horiguchi
2019-06-11 8:14 ` Anshuman Khandual
2019-06-12 6:48 ` Naoya Horiguchi
2019-06-10 8:18 ` [PATCH v2 2/2] mm: hugetlb: soft-offline: dissolve_free_huge_page() return zero on !PageHuge Naoya Horiguchi
2019-06-11 9:50 ` Anshuman Khandual
2019-06-12 7:09 ` Naoya Horiguchi
2019-06-11 17:16 ` Mike Kravetz
2019-06-12 7:24 ` Naoya Horiguchi
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