Re: [PATCH v1] mm/shrinker: simplify shrinker_memcg_alloc() using guard()

[Qi Zheng]

On 5/12/26 4:55 PM, wangxuewen wrote:
> Use guard(mutex) to automatically handle shrinker_mutex locking and
> unlocking in shrinker_memcg_alloc(). This removes the explicit
> mutex_unlock() call, the goto-based error path, and the redundant
> ret variable, resulting in cleaner and more concise code.

I'm inclined to use guard() only for newly added code. If we were to
convert existing code, there would be countless places across the
kernel that need updating.