On Wed 30-03-22 14:25:02, Jaewon Kim wrote: > The page allocation with GFP_NOIO may fail. And zram can handle this > allocation failure. We do not need to print log for this. GFP_NOIO doesn't have any special meaning wrt to failures. zram allocates from the memory reclaim context which is a bad design IMHO. The failure you are seeing indicates that PF_MEMALLOC context (memory reclaim) which is allow to dip into memory reserves without any limit cannot find any memory! This is really bad and it is good to learn about that. Your description doesn't really explain why we should be ignoring that situation. Is the memory allocation failure gracefully recoverable? -- Michal Hocko SUSE Labs
