Re: [PATCH v2] mm: kmalloc_index: make compiler break when size is not supported

Matthew Wilcox
2021-05-10T15:45:42Z

On Tue, May 11, 2021 at 12:02:30AM +0900, Hyeonggon Yoo wrote:
> @@ -382,8 +385,8 @@ static __always_inline unsigned int kmalloc_index(size_t size)
> if (size <= 8 * 1024 * 1024) return 23;
> if (size <= 16 * 1024 * 1024) return 24;
> if (size <= 32 * 1024 * 1024) return 25;
> - if (size <= 64 * 1024 * 1024) return 26;
> - BUG();
> +
> + BUILD_BUG_ON_MSG(1, "unexpected size in kmalloc_index()");

we're being encouraged to use static_assert() these days.