On 20.04.20 09:34, Michal Hocko wrote: > On Fri 17-04-20 15:12:47, Andrew Morton wrote: >> On Thu, 16 Apr 2020 09:34:17 +0200 David Hildenbrand <david@xxxxxxxxxx> wrote: >> >>> Without CONFIG_PREEMPT, it can happen that we get soft lockups detected, >>> e.g., while booting up. >>> >>> ... >>> >>> --- a/mm/page_alloc.c >>> +++ b/mm/page_alloc.c >>> @@ -1607,6 +1607,7 @@ void set_zone_contiguous(struct zone *zone) >>> if (!__pageblock_pfn_to_page(block_start_pfn, >>> block_end_pfn, zone)) >>> return; >>> + cond_resched(); >>> } >>> >>> /* We confirm that there is no hole */ >> >> I added cc:stable to this one. Please let me know if that wasn't a >> good idea. > > Really large memory setups tend to run on distribution kernels so > backporting to old kernels doesn't really harm. > Yeah, shouldn't hurt. -- Thanks, David / dhildenb
