On Thu, Jul 29, 2021 at 08:57:54PM +0800, Miaohe Lin wrote: > rtpn might be NULL in very rare case. We have better to check it before > dereferencing it. Since memcg can live with NULL rb_tree_per_node in > soft_limit_tree, warn this case and continue. Why would we need to warn? the GFP flags don't contain NOWARN, so we already know an allocation failed.
