On Wed 18-04-18 06:31:39, Matthew Wilcox wrote: > On Wed, Apr 18, 2018 at 11:29:12AM +0900, Minchan Kim wrote: > > If there are heavy memory pressure, page allocation with __GFP_NOWAIT > > fails easily although it's order-0 request. > > I got below warning 9 times for normal boot. > > > > Let's not make user scared. > > Actually, can you explain why it's OK if this fails? As I understand this > code, we'll fail to create a kmalloc cache for this memcg. What problems > does that cause? See http://lkml.kernel.org/r/20180418072002.GN17484@xxxxxxxxxxxxxx -- Michal Hocko SUSE Labs
