---

yaml --- r: 125728 b: refs/heads/master c: 7b574b7 h: refs/heads/master v: v3
git-mirror · Jan 4, 2009 · 59978bf · 59978bf
1 parent 9c2e49d
commit 59978bf
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7d3b56ba37a95f1f370f50258ed3954c304c524b
+refs/heads/master: 7b574b7b0124ed344911f5d581e9bc2d83bbeb19
diff --git a/trunk/kernel/cgroup.c b/trunk/kernel/cgroup.c
@@ -2945,7 +2945,11 @@ int cgroup_clone(struct task_struct *tsk, struct cgroup_subsys *subsys,
 	parent = task_cgroup(tsk, subsys->subsys_id);
 
 	/* Pin the hierarchy */
-	atomic_inc(&parent->root->sb->s_active);
+	if (!atomic_inc_not_zero(&parent->root->sb->s_active)) {
+		/* We race with the final deactivate_super() */
+		mutex_unlock(&cgroup_mutex);
+		return 0;
+	}
 
 	/* Keep the cgroup alive */
 	get_css_set(cg);