memcg: change oom_info_lock to mutex

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / memcontrol.c

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 53385cd..ce7a8cc 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1687,7 +1687,7 @@ void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
         * protects memcg_name and makes sure that parallel ooms do not
         * interleave
         */
-       static DEFINE_SPINLOCK(oom_info_lock);
+       static DEFINE_MUTEX(oom_info_lock);
        struct cgroup *task_cgrp;
        struct cgroup *mem_cgrp;
        static char memcg_name[PATH_MAX];
@@ -1698,7 +1698,7 @@ void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
        if (!p)
                return;
 
-       spin_lock(&oom_info_lock);
+       mutex_lock(&oom_info_lock);
        rcu_read_lock();
 
        mem_cgrp = memcg->css.cgroup;
@@ -1767,7 +1767,7 @@ done:
 
                pr_cont("\n");
        }
-       spin_unlock(&oom_info_lock);
+       mutex_unlock(&oom_info_lock);
 }
 
 /*