Merge branch 'master' of /home/davem/src/GIT/linux-2.6/

[pandora-kernel.git] / kernel / cgroup_freezer.c

diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
index 59e9ef6..da5e139 100644 (file)
--- a/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/cgroup.h>
 #include <linux/fs.h>
 #include <linux/uaccess.h>
@@ -47,17 +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);
 }
 
 /*