RAID6_USE_EMPTY_ZERO_PAGE is unused and hardcoded to 0, so let's drop it.
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Song Liu <song@kernel.org>
#ifdef __KERNEL__
-/* Set to 1 to use kernel-wide empty_zero_page */
-#define RAID6_USE_EMPTY_ZERO_PAGE 0
#include <linux/blkdev.h>
-/* We need a pre-zeroed page... if we don't want to use the kernel-provided
- one define it here */
-#if RAID6_USE_EMPTY_ZERO_PAGE
-# define raid6_empty_zero_page empty_zero_page
-#else
extern const char raid6_empty_zero_page[PAGE_SIZE];
-#endif
#else /* ! __KERNEL__ */
/* Used for testing in user space */
#else
#include <linux/module.h>
#include <linux/gfp.h>
-#if !RAID6_USE_EMPTY_ZERO_PAGE
/* In .bss so it's zeroed */
const char raid6_empty_zero_page[PAGE_SIZE] __attribute__((aligned(256)));
EXPORT_SYMBOL(raid6_empty_zero_page);
#endif
-#endif
struct raid6_calls raid6_call;
EXPORT_SYMBOL_GPL(raid6_call);