Messages in this thread | | | Date | Mon, 26 Aug 2013 23:41:36 -0400 | From | Naoya Horiguchi <> | Subject | Re: [PATCH v2 3/3] mm/hwpoison: fix return value of madvise_hwpoison |
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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@ah.jp.nec.com>
> Regards, > Wanpeng Li > > > > >> > >> Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> > >> --- > >> 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 > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@kvack.org. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> >
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