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fedora core 6 1.2949 + vserver 2.2.0
[linux-2.6.git]
/
include
/
asm-ia64
/
atomic.h
diff --git
a/include/asm-ia64/atomic.h
b/include/asm-ia64/atomic.h
index
d3e0dfa
..
569ec75
100644
(file)
--- a/
include/asm-ia64/atomic.h
+++ b/
include/asm-ia64/atomic.h
@@
-95,8
+95,14
@@
ia64_atomic64_sub (__s64 i, atomic64_t *v)
({ \
int c, old; \
c = atomic_read(v); \
({ \
int c, old; \
c = atomic_read(v); \
- while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c) \
+ for (;;) { \
+ if (unlikely(c == (u))) \
+ break; \
+ old = atomic_cmpxchg((v), c, c + (a)); \
+ if (likely(old == c)) \
+ break; \
c = old; \
c = old; \
+ } \
c != (u); \
})
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
c != (u); \
})
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)