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authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>2014-07-30 16:08:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-07-30 17:16:13 -0700
commit93a9eb39fad1b5fc9077776caa3af207883b254d (patch)
tree8090414d47460b63abcc563fee37013cc9f6c530
parent0193ed8225e1a79ed64632106ec3cc81798cb13c (diff)
downloadlinux-93a9eb39fad1b5fc9077776caa3af207883b254d.tar.gz
hwpoison: fix hugetlbfs/thp precheck in hwpoison_user_mappings()
A recent fix from Chen Yucong, commit 0bc1f8b0682c ("hwpoison: fix the handling path of the victimized page frame that belong to non-LRU") rejects going into unmapping operation for hugetlbfs/thp pages, which results in failing error containing on such pages. This patch fixes it. With this patch, hwpoison functional tests in mce-test testsuite pass. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Chen Yucong <slaoub@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/memory-failure.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 7211a73ba14..3db261fdee4 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -895,7 +895,13 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn,
struct page *hpage = *hpagep;
struct page *ppage;
- if (PageReserved(p) || PageSlab(p) || !PageLRU(p))
+ /*
+ * Here we are interested only in user-mapped pages, so skip any
+ * other types of pages.
+ */
+ if (PageReserved(p) || PageSlab(p))
+ return SWAP_SUCCESS;
+ if (!(PageLRU(hpage) || PageHuge(p)))
return SWAP_SUCCESS;
/*