> -#if (defined(CONFIG_MEMORY_ISOLATION) && defined(CONFIG_COMPACTION)) || defined(CONFIG_CMA)
> +#ifdef CONFIG_COMPACTION_CORE
> static __init int gigantic_pages_init(void)
> {
> /* With compaction or CMA we can allocate gigantic pages at runtime */
> diff --git a/fs/Kconfig b/fs/Kconfig
> index ac474a61be37..8fecd3ea5563 100644
> --- a/fs/Kconfig
> +++ b/fs/Kconfig
> @@ -207,8 +207,9 @@ config HUGETLB_PAGE
> config MEMFD_CREATE
> def_bool TMPFS || HUGETLBFS
>
> -config ARCH_HAS_GIGANTIC_PAGE
> +config COMPACTION_CORE
> bool
> + default y if (MEMORY_ISOLATION && MIGRATION) || CMA
This takes a hard dependency (#if) and turns it into a Kconfig *default*
that can be overridden. That seems like trouble.
Shouldn't it be:
config COMPACTION_CORE
def_bool y
depends on (MEMORY_ISOLATION && MIGRATION) || CMA
?
