Re: [PATCH 6/6] fs: Introduce kern_mount_special() to mount special vfs

On Fri, Nov 28, 2008 at 09:26:04AM +0000, Al Viro wrote:

gyah...  That would be

static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
{
	unsigned long temp, res;
	__asm__ __volatile__(
	"1:     ldl_l %0,%1\n"
	"       cmpne %0,%4,%2\n"

 	"       beq %2,3f\n"
 	"       addl %0,%3,%2\n"

	"       stl_c %2,%1\n"
	"       beq %2,2f\n"
	"3:\n"
        ".subsection 2\n"
        "2:     br 1b\n"
        ".previous"
        :"=&r" (temp), "=m" (v->counter), "=&r" (res)
        :"Ir" (a), "Ir" (u), "m" (v->counter) : "memory");
	smp_mb();
	return res;
}

static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
{
	unsigned long temp, res;
	__asm__ __volatile__(
	"1:     ldq_l %0,%1\n"
	"       cmpne %0,%4,%2\n"

 	"       beq %2,3f\n"
 	"       addq %0,%3,%2\n"

	"       stq_c %2,%1\n"
	"       beq %2,2f\n"
	"3:\n"
        ".subsection 2\n"
        "2:     br 1b\n"
        ".previous"
        :"=&r" (temp), "=m" (v->counter), "=&r" (res)
        :"Ir" (a), "Ir" (u), "m" (v->counter) : "memory");
	smp_mb();
	return res;
}

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