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lib/raid6: drop RAID6_USE_EMPTY_ZERO_PAGE

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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>
This commit is contained in:
Giulio Benetti 2022-10-19 18:04:07 +02:00 • committed by Song Liu
parent 9487a0f685
commit 42271ca389
2 changed files with 0 additions and 10 deletions
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8
include/linux/raid/pq.h
View file

@ -10,17 +10,9 @@
#ifdef __KERNEL__ #ifdef __KERNEL__
/* Set to 1 to use kernel-wide empty_zero_page */
#define RAID6_USE_EMPTY_ZERO_PAGE 0
#include <linux/blkdev.h> #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]; extern const char raid6_empty_zero_page[PAGE_SIZE];
#endif
#else /* ! __KERNEL__ */ #else /* ! __KERNEL__ */
/* Used for testing in user space */ /* Used for testing in user space */

2
lib/raid6/algos.c
View file

@ -18,12 +18,10 @@
#else #else
#include <linux/module.h> #include <linux/module.h>
#include <linux/gfp.h> #include <linux/gfp.h>
#if !RAID6_USE_EMPTY_ZERO_PAGE
/* In .bss so it's zeroed */ /* In .bss so it's zeroed */
const char raid6_empty_zero_page[PAGE_SIZE] __attribute__((aligned(256))); const char raid6_empty_zero_page[PAGE_SIZE] __attribute__((aligned(256)));
EXPORT_SYMBOL(raid6_empty_zero_page); EXPORT_SYMBOL(raid6_empty_zero_page);
#endif #endif
#endif
struct raid6_calls raid6_call; struct raid6_calls raid6_call;
EXPORT_SYMBOL_GPL(raid6_call); EXPORT_SYMBOL_GPL(raid6_call);