1 files changed, 17 insertions, 0 deletions

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 49d80814798b..350a14da6525 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -855,6 +855,17 @@ static ssize_t mem_cgroup_write(struct cgroup *cont, struct cftype *cft,
                                 mem_cgroup_write_strategy);
 }
 
+static ssize_t mem_cgroup_max_reset(struct cgroup *cont, struct cftype *cft,
+                                struct file *file, const char __user *userbuf,
+                                size_t nbytes, loff_t *ppos)
+{
+        struct mem_cgroup *mem;
+
+        mem = mem_cgroup_from_cont(cont);
+        res_counter_reset_max(&mem->res);
+        return nbytes;
+}
+
 static ssize_t mem_force_empty_write(struct cgroup *cont,
                                 struct cftype *cft, struct file *file,
                                 const char __user *userbuf,
@@ -910,6 +921,12 @@ static struct cftype mem_cgroup_files[] = {
                 .read_u64 = mem_cgroup_read,
         },
         {
+                .name = "max_usage_in_bytes",
+                .private = RES_MAX_USAGE,
+                .write = mem_cgroup_max_reset,
+                .read_u64 = mem_cgroup_read,
+        },
+        {
                 .name = "limit_in_bytes",
                 .private = RES_LIMIT,
                 .write = mem_cgroup_write,