Re: [PATCH] mm/damon/vaddr: remove redundant RCU lock

[Igor Putko <igorpetindev@gmail.com>]

Hi SJ,

On Mon, 29 Jun 2026, SJ Park wrote:
> We prefer using a real name. I show you used 'Igor Putko' as your name before.
> Any reason to change the name?

Apologies for the confusion. I recently reinstalled my OS and misconfigured
my git setup. I will revert back to 'Igor Putko' for the v2 submission.

> As Sashiko also commented, this may cause lockdep warning. Actually this was
> added to fix it. Refer to the previous discussions [1] for more details.
> 
> How about moving rcu_read_[un]lock() to the caller test code?

That makes total sense. I will move the rcu_read_lock() and rcu_read_unlock()
calls directly into the KUnit test code in mm/damon/tests/vaddr-kunit.h to
prevent the lockdep splat.

Regarding the pre-existing high-severity issue reported by Sashiko AI about
missing check_stable_address_space(), I believe it is out of scope for this
particular cleanup and should be addressed in a separate, dedicated patch.

I have just sent the v2 patch out.

Thanks,
Igor