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lib/raid6: avoid __attribute_const__ redefinition

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This is defined in glibc's sys/cdefs.h on my system with the same
definition as the raid6test fallback definition.  Add a #ifndef check to
avoid a compiler warning about redefining it.

Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Signed-off-by: Shaohua Li <shli@fb.com>
This commit is contained in:
Daniel Verkamp 2018-11-12 15:22:17 -08:00 committed by Shaohua Li
parent e731f3e28b
commit 58af3110a7
1 changed files with 3 additions and 1 deletions
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4
include/linux/raid/pq.h
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@ -53,7 +53,9 @@ extern const char raid6_empty_zero_page[PAGE_SIZE];
#define __init
#define __exit
#define __attribute_const__ __attribute__((const))
#ifndef __attribute_const__
# define __attribute_const__ __attribute__((const))
#endif
#define noinline __attribute__((noinline))
#define preempt_enable()