Re: [PATCH v4 07/12] mm: enable lazy_mmu sections to nest

[Alexander Gordeev <agordeev@xxxxxxxxxxxxx>]

On Wed, Oct 29, 2025 at 10:09:04AM +0000, Kevin Brodsky wrote:

Hi Kevin,

> +#ifdef CONFIG_ARCH_HAS_LAZY_MMU_MODE
> +static inline bool in_lazy_mmu_mode(void)
> +{
> +     return current->lazy_mmu_state.active;

Whether (nesting_level > 0) is more correct check?
Otherwise, it returns false while in paused mode.

May be check both nesting_level and active and also introduce
in_lazy_mmu_paused_mode() right away to avoid any confusion?

> +}
> +#else
> +static inline bool in_lazy_mmu_mode(void)
> +{
> +     return false;
> +}
> +#endif
> +
>  extern struct pid *cad_pid;
>  
>  /*

Thanks!