Re: [RFC V2 PATCH] kernfs: create raw version kernfs_path_len and kernfs_path

[Tejun Heo]

Hello,

On Fri, Feb 26, 2016 at 01:47:39PM -0800, Yang Shi wrote:
> Call synchronize_sched() when kernfs_node is updated since tracepoints are
> protected by rcu_read_lock_sched.

Adding synchronize_sched() to operations which can be triggered from
userland usually turns out to be problematic.  If this can't be solved
any other way, I think the right thing to do is replacing the path
with cgroup id as Christoph suggested.

Thanks.

-- 
tejun