On Tue, Aug 27, 2013 at 11:38:27AM +0800, Wanpeng Li wrote:
> 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.
Oh, I see. Thanks.
Reviewed-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
> 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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