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Date: Wed, 18 Sep 2013 08:38:55 +0800 From: Wanpeng Li <liwanp@...ux.vnet.ibm.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Andi Kleen <andi@...stfloor.org>, Fengguang Wu <fengguang.wu@...el.com>, Naoya Horiguchi <n-horiguchi@...jp.nec.com>, Tony Luck <tony.luck@...el.com>, gong.chen@...ux.intel.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org, Wanpeng Li <liwanp@...ux.vnet.ibm.com> Subject: [PATCH v3 2/4] mm/hwpoison: fix miss catch transparent huge page Changelog: *v1 -> v2: reverse PageTransHuge(page) && !PageHuge(page) check PageTransHuge() can't guarantee the page is transparent huge page since it return true for both transparent huge and hugetlbfs pages. This patch fix it by check the page is also !hugetlbfs page. Before patch: [ 121.571128] Injecting memory failure at pfn 23a200 [ 121.571141] MCE 0x23a200: huge page recovery: Delayed [ 140.355100] MCE: Memory failure is now running on 0x23a200 After patch: [ 94.290793] Injecting memory failure at pfn 23a000 [ 94.290800] MCE 0x23a000: huge page recovery: Delayed [ 105.722303] MCE: Software-unpoisoned page 0x23a000 Reviewed-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com> Acked-by: Andi Kleen <ak@...ux.intel.com> Signed-off-by: Wanpeng Li <liwanp@...ux.vnet.ibm.com> --- mm/memory-failure.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index e28ee77..ed41c63 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1349,7 +1349,7 @@ int unpoison_memory(unsigned long pfn) * worked by memory_failure() and the page lock is not held yet. * In such case, we yield to memory_failure() and make unpoison fail. */ - if (PageTransHuge(page)) { + if (!PageHuge(page) && PageTransHuge(page)) { pr_info("MCE: Memory failure is now running on %#lx\n", pfn); return 0; } -- 1.7.5.4 -- 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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