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    Subject[PATCH 16/23] make atomic_read() and atomic_set() behavior consistent on s390
    From: Chris Snook <csnook@redhat.com>

    Use volatile consistently in atomic.h on s390.

    Signed-off-by: Chris Snook <csnook@redhat.com>

    --- linux-2.6.23-rc3-orig/include/asm-s390/atomic.h 2007-08-13 03:14:13.000000000 -0400
    +++ linux-2.6.23-rc3/include/asm-s390/atomic.h 2007-08-13 06:04:58.000000000 -0400
    @@ -67,8 +67,15 @@ typedef struct {

    #endif /* __GNUC__ */

    -#define atomic_read(v) ((v)->counter)
    -#define atomic_set(v,i) (((v)->counter) = (i))
    +static __inline__ int atomic_read(atomic_t *v)
    +{
    + return *(volatile int *)&v->counter;
    +}
    +
    +static __inline__ void atomic_set(atomic_t *v, int i)
    +{
    + *(volatile int *)&v->counter = i;
    +}

    static __inline__ int atomic_add_return(int i, atomic_t * v)
    {
    @@ -182,8 +189,15 @@ typedef struct {

    #endif /* __GNUC__ */

    -#define atomic64_read(v) ((v)->counter)
    -#define atomic64_set(v,i) (((v)->counter) = (i))
    +static __inline__ long long atomic64_read(atomic64_t *v)
    +{
    + return *(volatile long long *)&v->counter;
    +}
    +
    +static __inline__ void atomic64_set(atomic64_t *v, long long i)
    +{
    + *(volatile long long *)&v->counter = i;
    +}

    static __inline__ long long atomic64_add_return(long long i, atomic64_t * v)
    {
    -
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