unsigned long ino = 0;
rcu_read_lock();
- if (PageHead(page) && PageSlab(page))
+ if (PageSlab(page) && !PageTail(page))
memcg = memcg_from_slab_page(page);
else
memcg = READ_ONCE(page->mem_cgroup);
goto retry;
}
+ /*
+ * Memcg doesn't have a dedicated reserve for atomic
+ * allocations. But like the global atomic pool, we need to
+ * put the burden of reclaim on regular allocation requests
+ * and let these go through as privileged allocations.
+ */
+ if (gfp_mask & __GFP_ATOMIC)
+ goto force;
+
/*
* Unlike in global OOM situations, memcg is not in a physical
* memory shortage. Allow dying and OOM-killed tasks to
{
int node;
- /*
- * Flush percpu vmstats and vmevents to guarantee the value correctness
- * on parent's and all ancestor levels.
- */
- memcg_flush_percpu_vmstats(memcg, false);
- memcg_flush_percpu_vmevents(memcg);
for_each_node(node)
free_mem_cgroup_per_node_info(memcg, node);
free_percpu(memcg->vmstats_percpu);
static void mem_cgroup_free(struct mem_cgroup *memcg)
{
memcg_wb_domain_exit(memcg);
+ /*
+ * Flush percpu vmstats and vmevents to guarantee the value correctness
+ * on parent's and all ancestor levels.
+ */
+ memcg_flush_percpu_vmstats(memcg, false);
+ memcg_flush_percpu_vmevents(memcg);
__mem_cgroup_free(memcg);
}