diff options
| -rw-r--r-- | net/core/netclassid_cgroup.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/core/netclassid_cgroup.c b/net/core/netclassid_cgroup.c index d6a70aeaa503..d22f0919821e 100644 --- a/net/core/netclassid_cgroup.c +++ b/net/core/netclassid_cgroup.c @@ -88,6 +88,12 @@ static void update_classid_task(struct task_struct *p, u32 classid) }; unsigned int fd = 0; + /* Only update the leader task, when many threads in this task, + * so it can avoid the useless traversal. + */ + if (p != p->group_leader) + return; + do { task_lock(p); fd = iterate_fd(p->files, fd, update_classid_sock, &ctx); |