diff --git a/mm/memcontrol.c b/mm/memcontrol.c index ecde75f2189beab1b74da81adb82e013bdfcd991..65da189a433b78ba6fb77582b1d5f666b4fc0891 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2637,6 +2637,16 @@ int memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order, if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && !page_counter_try_charge(&memcg->kmem, nr_pages, &counter)) { + + /* + * Enforce __GFP_NOFAIL allocation because callers are not + * prepared to see failures and likely do not have any failure + * handling code. + */ + if (gfp & __GFP_NOFAIL) { + page_counter_charge(&memcg->kmem, nr_pages); + return 0; + } cancel_charge(memcg, nr_pages); return -ENOMEM; }