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| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2015-05-05 16:23:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-05-05 17:10:10 -0700 |
| commit | 602498f9aa43d4951eece3fd6ad95a6d0a78d537 (patch) | |
| tree | 0cf960b93d33ac4f3d27c6dd5b5af3856f7eadae /block | |
| parent | 4d61ff6b9960cb00cf2c12abd5769aa2dd475415 (diff) | |
| download | op-kernel-dev-602498f9aa43d4951eece3fd6ad95a6d0a78d537.zip op-kernel-dev-602498f9aa43d4951eece3fd6ad95a6d0a78d537.tar.gz | |
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 'block')
0 files changed, 0 insertions, 0 deletions
