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-rw-r--r--mm/memcontrol.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index d9344da..f5de783 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -338,6 +338,38 @@ struct cg_proto *tcp_proto_cgroup(struct mem_cgroup *memcg)
}
EXPORT_SYMBOL(tcp_proto_cgroup);
+/**
+ * mem_cgroup_charge_skmem - charge socket memory
+ * @proto: proto to charge
+ * @nr_pages: number of pages to charge
+ *
+ * Charges @nr_pages to @proto. Returns %true if the charge fit within
+ * @proto's configured limit, %false if the charge had to be forced.
+ */
+bool mem_cgroup_charge_skmem(struct cg_proto *proto, unsigned int nr_pages)
+{
+ struct page_counter *counter;
+
+ if (page_counter_try_charge(&proto->memory_allocated,
+ nr_pages, &counter)) {
+ proto->memory_pressure = 0;
+ return true;
+ }
+ page_counter_charge(&proto->memory_allocated, nr_pages);
+ proto->memory_pressure = 1;
+ return false;
+}
+
+/**
+ * mem_cgroup_uncharge_skmem - uncharge socket memory
+ * @proto - proto to uncharge
+ * @nr_pages - number of pages to uncharge
+ */
+void mem_cgroup_uncharge_skmem(struct cg_proto *proto, unsigned int nr_pages)
+{
+ page_counter_uncharge(&proto->memory_allocated, nr_pages);
+}
+
#endif
#ifdef CONFIG_MEMCG_KMEM
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