[PATCH v5 0/5] refine storing null

[Andrew Morton]

On Thu, 31 Oct 2024 23:16:22 +0000 Wei Yang <richard.weiyang at gmail.com> wrote:

> The original thread[1] thoughts it is a problem in mas_new_root(). But after
> discussion, this should be an improvement on storing NULL.

I hate to be a bureaucrat, but that isn't a very satisfying [0/N].

> 
> [1]: https://lkml.kernel.org/r/20241015233909.23592-1-richard.weiyang@gmail.com

>From here I extracted "When overwriting the whole range with NULL,
current behavior is not correct", but that's still very thin.  What is
incorrect about it and what is the impact of all of this to Linux users?