Re: rcu: Add might_sleep() check to synchronize_rcu()

[Steven Rostedt]

On Fri, 23 Mar 2018 22:12:24 +0100 (CET)
Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:

> synchronize_rcu() lacks a might_sleep() check which would have caught that
> issue way earlier because it would trigger with the minimal debug options
> enabled.
> 
> Add a might_sleep() check to catch such cases.

I'm not against the patch, but really? I would think that
synchronize_rcu() would pretty much always schedule, and scheduling
from atomic would have triggered with minimal debug options enabled.

-- Steve