Re: [PATCH V8 5/8] percpu-refcount: introduce __percpu_ref_tryget_live

From: Tejun Heo
Date: Tue Oct 03 2017 - 10:15:08 EST


On Tue, Oct 03, 2017 at 10:04:03PM +0800, Ming Lei wrote:
> Block layer need to call this function after holding
> rcu lock in a real hot path, so introduce this helper.

The patch description is too anemic. It doesn't even describe what
changes are being made, let alone justifying them.