The patch titled Subject: mm: soft-offline: return -EBUSY if set_hwpoison_free_buddy_page() fails has been added to the -mm tree. Its filename is mm-soft-offline-return-ebusy-if-set_hwpoison_free_buddy_page-fails.patch

This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-soft-offline-return-ebusy-if-set... and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-soft-offline-return-ebusy-if-set...

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------------------------------------------------------ From: Naoya Horiguchi n-horiguchi@ah.jp.nec.com Subject: mm: soft-offline: return -EBUSY if set_hwpoison_free_buddy_page() fails

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.

Link: http://lkml.kernel.org/r/1560154686-18497-2-git-send-email-n-horiguchi@ah.jp... Signed-off-by: Naoya Horiguchi n-horiguchi@ah.jp.nec.com Fixes: 6bc9b56433b76 ("mm: fix race on soft-offlining") Cc: Michal Hocko mhocko@kernel.org Cc: Mike Kravetz mike.kravetz@oracle.com Cc: Xishi Qiu xishi.qiuxishi@alibaba-inc.com Cc: "Chen, Jerry T" jerry.t.chen@intel.com Cc: "Zhuo, Qiuxu" qiuxu.zhuo@intel.com Cc: stable@vger.kernel.org [4.19+] Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

mm/memory-failure.c | 2 ++ 1 file changed, 2 insertions(+)

--- a/mm/memory-failure.c~mm-soft-offline-return-ebusy-if-set_hwpoison_free_buddy_page-fails +++ a/mm/memory-failure.c @@ -1730,6 +1730,8 @@ static int soft_offline_huge_page(struct if (!ret) { if (set_hwpoison_free_buddy_page(page)) num_poisoned_pages_inc(); + else + ret = -EBUSY; } } return ret; _

Patches currently in -mm which might be from n-horiguchi@ah.jp.nec.com are

mm-soft-offline-return-ebusy-if-set_hwpoison_free_buddy_page-fails.patch mm-hugetlb-soft-offline-dissolve_free_huge_page-return-zero-on-pagehuge.patch