Re: [PATCH v2] srcu: Improve comments about acceleration leak

[Frederic Weisbecker]

Le Sun, Dec 17, 2023 at 09:00:15PM -0500, Joel Fernandes a écrit :
> "Acceleration can never fail because the state of gp_seq value used
> for acceleration is <= the state of gp_seq used for advancing."
> 
> Does that sound correct now?

That can be confusing since acceleration relies on rcu_seq_snap() while
advance relies on rcu_seq_current(). And rcu_seq_snap() returns a snapshot
that may be above the subsequent rcu_seq_current() return value.

So it should rather be something like:

"The base current gp_seq value used to produce the snapshot has to
be <= the gp_seq used for advancing."

Thanks.