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Date: Mon, 10 Aug 2015 19:28:19 +0800 From: Wanpeng Li <wanpeng.li@...mail.com> To: Andrew Morton <akpm@...ux-foundation.org> CC: Naoya Horiguchi <n-horiguchi@...jp.nec.com>, linux-mm@...ck.org, linux-kernel@...r.kernel.org, Wanpeng Li <wanpeng.li@...mail.com> Subject: [PATCH v2 1/5] mm/hwpoison: fix fail to split thp w/ refcount held THP pages will get a refcount in madvise_hwpoison() w/ MF_COUNT_INCREASED flag, however, the refcount is still held when fail to split THP pages. Fix it by reducing the refcount of THP pages when fail to split THP. Signed-off-by: Wanpeng Li <wanpeng.li@...mail.com> --- mm/memory-failure.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 8077b1c..56b8a71 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1710,6 +1710,8 @@ int soft_offline_page(struct page *page, int flags) if (PageAnon(hpage) && unlikely(split_huge_page(hpage))) { pr_info("soft offline: %#lx: failed to split THP\n", pfn); + if (flags & MF_COUNT_INCREASED) + put_page(page); return -EBUSY; } } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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