Re: [PATCH 3/3] raid: substitute empty_zero_page with helper ZERO_PAGE(0)

[Christoph Hellwig]

On Tue, Oct 18, 2022 at 11:57:55PM +0200, Giulio Benetti wrote:
>  #if RAID6_USE_EMPTY_ZERO_PAGE
> -# define raid6_empty_zero_page empty_zero_page
> +# define raid6_empty_zero_page ZERO_PAGE(0)
>  #else
>  extern const char raid6_empty_zero_page[PAGE_SIZE];

RAID6_USE_EMPTY_ZERO_PAGE is never set to a non-zero value.  So this
is dead code and we can just remove all code related to the
RAID6_USE_EMPTY_ZERO_PAGE case.