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asm-generic: add another generic ext2 atomic bitops

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The majority of architectures implement ext2 atomic bitops as
test_and_{set,clear}_bit() without spinlock.

This adds this type of generic implementation in ext2-atomic-setbit.h and
use it wherever possible.

Signed-off-by: Akinobu Mita <[email protected]>
Suggested-by: Andreas Dilger <[email protected]>
Suggested-by: Arnd Bergmann <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Akinobu Mita 2011-07-26 16:09:04 -07:00 • committed by Linus Torvalds
commit 148817ba09
15 changed files with 28 additions and 59 deletions
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5
arch/tile/include/asm/bitops_64.h
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@ -97,9 +97,6 @@ static inline int test_and_change_bit(unsigned nr,
return (oldval & mask) != 0;
}
#define ext2_set_bit_atomic(lock, nr, addr) \
test_and_set_bit((nr), (unsigned long *)(addr))
#define ext2_clear_bit_atomic(lock, nr, addr) \
test_and_clear_bit((nr), (unsigned long *)(addr))
#include <asm-generic/bitops/ext2-atomic-setbit.h>
#endif /* _ASM_TILE_BITOPS_64_H */