Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...

[safe/jmp/linux-2.6] / kernel / cgroup_freezer.c

diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
index d2ccd27..da5e139 100644 (file)
--- a/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@ -48,17 +48,20 @@ static inline struct freezer *task_freezer(struct task_struct *task)
                            struct freezer, css);
 }
 
-int cgroup_frozen(struct task_struct *task)
+int cgroup_freezing_or_frozen(struct task_struct *task)
 {
        struct freezer *freezer;
        enum freezer_state state;
 
        task_lock(task);
        freezer = task_freezer(task);
-       state = freezer->state;
+       if (!freezer->css.cgroup->parent)
+               state = CGROUP_THAWED; /* root cgroup can't be frozen */
+       else
+               state = freezer->state;
        task_unlock(task);
 
-       return state == CGROUP_FROZEN;
+       return (state == CGROUP_FREEZING) || (state == CGROUP_FROZEN);
 }
 
 /*