Re: [PATCH v14 09/12] unwind deferred: Use SRCU unwind_deferred_task_work()

[Steven Rostedt]

On Thu, 17 Jul 2025 08:48:40 -0700
"Paul E. McKenney" <paulmck@xxxxxxxxxx> wrote:

> So if there is some reason that you absolutely cannot immediately convert
> to SRCU-fast, let's please discuss.

There's two reasons I wouldn't add it immediately.

One, is the guard(srcu_fast) isn't in mainline yet. I would either need
to open code it, or play the tricks of basing code off your tree.

Two, I'm still grasping at the concept of srcu_fast (and srcu_lite for
that matter), where I rather be slow and safe than optimize and be
unsafe. The code where this is used may be faulting in user space
memory, so it doesn't need the micro-optimizations now.

-- Steve