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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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3
arch/alpha/include/asm/bitops.h
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@ -456,8 +456,7 @@ sched_find_first_bit(const unsigned long b[2])
#include <asm-generic/bitops/le.h>
#define ext2_set_bit_atomic(l,n,a) test_and_set_bit(n,a)
#define ext2_clear_bit_atomic(l,n,a) test_and_clear_bit(n,a)
#include <asm-generic/bitops/ext2-atomic-setbit.h>
#endif /* __KERNEL__ */