---

yaml --- r: 189389 b: refs/heads/master c: 5a7aadf h: refs/heads/master i: 189387: cef5505 v: v3
git-mirror · Mar 26, 2010 · 15c53c1 · 15c53c1
1 parent d5ec7a9
commit 15c53c1
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Showing 4 changed files with 13 additions and 7 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4f598458ea4450f53e8ed929ee4e66b3404a7286
+refs/heads/master: 5a7aadfe2fcb0f69e2acc1fbefe22a096e792fc9
diff --git a/trunk/include/linux/freezer.h b/trunk/include/linux/freezer.h
@@ -64,9 +64,12 @@ extern bool freeze_task(struct task_struct *p, bool sig_only);
 extern void cancel_freezing(struct task_struct *p);
 
 #ifdef CONFIG_CGROUP_FREEZER
-extern int cgroup_frozen(struct task_struct *task);
+extern int cgroup_freezing_or_frozen(struct task_struct *task);
 #else /* !CONFIG_CGROUP_FREEZER */
-static inline int cgroup_frozen(struct task_struct *task) { return 0; }
+static inline int cgroup_freezing_or_frozen(struct task_struct *task)
+{
+	return 0;
+}
 #endif /* !CONFIG_CGROUP_FREEZER */
 
 /*

diff --git a/trunk/kernel/cgroup_freezer.c b/trunk/kernel/cgroup_freezer.c
@@ -47,17 +47,20 @@ 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);
 }
 
 /*

diff --git a/trunk/kernel/power/process.c b/trunk/kernel/power/process.c
@@ -144,7 +144,7 @@ static void thaw_tasks(bool nosig_only)
 		if (nosig_only && should_send_signal(p))
 			continue;
 
-		if (cgroup_frozen(p))
+		if (cgroup_freezing_or_frozen(p))
 			continue;
 
 		thaw_process(p);