[PATCH] kexec: change locking mechanism to a mutex

[Andrew Morton]

On Thu, 21 Sep 2023 17:59:38 -0400 Eric DeVolder <eric.devolder at oracle.com> wrote:

> Scaled up testing has revealed that the kexec_trylock()
> implementation leads to failures within the crash hotplug
> infrastructure due to the inability to acquire the lock,
> specifically the message:
> 
> ...
>
> Convert the atomic lock to a mutex.
> 

Do you think this problem is serious enough to warrant a backport into
-stable kernels?