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authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>2015-05-05 16:23:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-05-05 17:10:10 -0700
commit602498f9aa43d4951eece3fd6ad95a6d0a78d537 (patch)
tree0cf960b93d33ac4f3d27c6dd5b5af3856f7eadae /mm/hwpoison-inject.c
parent4d61ff6b9960cb00cf2c12abd5769aa2dd475415 (diff)
mm: soft-offline: fix num_poisoned_pages counting on concurrent events
If multiple soft offline events hit one free page/hugepage concurrently, soft_offline_page() can handle the free page/hugepage multiple times, which makes num_poisoned_pages counter increased more than once. This patch fixes this wrong counting by checking TestSetPageHWPoison for normal papes and by checking the return value of dequeue_hwpoisoned_huge_page() for hugepages. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Dean Nelson <dnelson@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: <stable@vger.kernel.org> [3.14+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/hwpoison-inject.c')
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