Hi Naoya,
On Mon, Aug 26, 2013 at 11:28:16PM -0400, Naoya Horiguchi wrote:
>On Tue, Aug 27, 2013 at 10:39:31AM +0800, Wanpeng Li wrote:
>> The return value outside for loop is always zero which means madvise_hwpoison
>> return success, however, this is not truth for soft_offline_page w/ failure
>> return value.
>
>I don't understand what you want to do for what reason. Could you clarify
>those?
int ret is defined in two place in madvise_hwpoison. One is out of for
loop and its value is always zero(zero means success for madvise), the
other one is in for loop. The soft_offline_page function maybe return
-EBUSY and break, however, the ret out of for loop is return which means
madvise_hwpoison success.
Regards,
Wanpeng Li
>
>>
>> Signed-off-by: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
>> ---
>> mm/madvise.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/mm/madvise.c b/mm/madvise.c
>> index a20764c..19b71e4 100644
>> --- a/mm/madvise.c
>> +++ b/mm/madvise.c
>> @@ -359,7 +359,7 @@ static int madvise_hwpoison(int bhv, unsigned long start, unsigned long end)
>> page_to_pfn(p), start);
>> ret = soft_offline_page(p, MF_COUNT_INCREASED);
>> if (ret)
>> - break;
>> + return ret;
>> continue;
>> }
>> pr_info("Injecting memory failure for page %#lx at %#lx\n",
>
>This seems to introduce no behavioral change.
>
>Thanks,
>Naoya Horiguchi
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