On Tue 04-07-17 11:39:57, Vlastimil Babka wrote: > On 07/04/2017 07:23 AM, Joonsoo Kim wrote: > > On Mon, Jul 03, 2017 at 04:18:01PM +0200, Vlastimil Babka wrote: > >> allocated" looks much more sane there. But there's a warning nevertheless. > > > > Warning would comes from the fact that drain_all_pages() is called > > before mm_percpu_wq is initialised. We could remove WARN_ON_ONCE() and add > > drain_local_page(zone) to fix the problem. > > Wouldn't that still leave some period during boot where kernel already > runs on multiple CPU's, but mm_percpu_wq is not yet initialized and > somebody tries to use it? We want to catch such cases, right? I haven't checked the boot sequence but if we know that we need mm_percpu_wq initialized earlier than moving it should be not a big deal I guess. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
