On Mon, Aug 10, 2015 at 07:28:22PM +0800, Wanpeng Li wrote:
> Hwpoison injection takes a refcount of target page and another refcount
> of head page of THP if the target page is the tail page of a THP. However,
> current code doesn't release the refcount of head page if the THP is not
> supported to be injected wrt hwpoison filter.
>
> Fix it by reducing the refcount of head page if the target page is the tail
> page of a THP and it is not supported to be injected.
>
> Signed-off-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxx>
Acked-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
> ---
> mm/hwpoison-inject.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c
> index 5015679..9d26fd9 100644
> --- a/mm/hwpoison-inject.c
> +++ b/mm/hwpoison-inject.c
> @@ -55,7 +55,7 @@ inject:
> pr_info("Injecting memory failure at pfn %#lx\n", pfn);
> return memory_failure(pfn, 18, MF_COUNT_INCREASED);
> put_out:
> - put_page(p);
> + put_hwpoison_page(p);
> return 0;
> }
>
> --
> 1.7.1
>
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